InDetAlignFillTrack.cxx

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/*
   Copyright (C) 2002-2026 CERN for the benefit of the ATLAS collaboration
 */

// ================================================
// InDetAlignFillTrack
// ================================================
//
// InDetAlignFillTrack.cxx
// Source file for InDetAlignFillTrack
//
// Carlos Escobar, started 27/12/2007
//
// AlgTool to fill track information (including truth) in a ntuple
 
 
#include "GaudiKernel/NTuple.h"
#include "GaudiKernel/INTupleSvc.h"
#include "GaudiKernel/SmartDataPtr.h"
 
#include "AthContainers/DataVector.h"
 
#include "TrkTrack/Track.h"
 
#include "TrkTruthData/TrackTruth.h"
#include "TrkTruthData/TrackTruthCollection.h"
 
#include "TrkParameters/TrackParameters.h"
 
#include "TrackRecord/TrackRecord.h"
#include "TrackRecord/TrackRecordCollection.h"
 
 
#include "xAODTracking/TrackParticle.h"
#include "TrkEventPrimitives/FitQuality.h"
#include "CLHEP/GenericFunctions/CumulativeChiSquare.hh"
#include "CLHEP/Geometry/Point3D.h"
#include "CLHEP/Units/SystemOfUnits.h"
 
#include "InDetAlignFillTrack.h"
#include "AtlasHepMC/GenParticle.h"
#include "AtlasHepMC/GenVertex.h"
 
#include <string>
 
static const int maxTracks = 10000; // maximal number of tracks per event
 
//=====================================================================
// InDetAlignFillTrack()
//=====================================================================
InDetAlignFillTrack::InDetAlignFillTrack (const std::string& type,
                                          const std::string& name,
                                          const IInterface* parent)
  : base_class(type, name, parent)
{
}
 
//=====================================================================
// initialize()
//=====================================================================
StatusCode InDetAlignFillTrack::initialize() {
  ATH_MSG_DEBUG("Initialize() of FillTrack");
  // retrieve the NTuple Service
  ATH_CHECK(m_ntupleSvc.retrieve());
  // get TrackParticleCreatorTool
  ATH_CHECK(m_particleCreator.retrieve());
  // if Truth...
  if (m_doTruth) {
    // Get TruthToTrack
    ATH_CHECK(m_truthToTrack.retrieve());
    // Get Extrapolator Tool
    ATH_CHECK(m_extrapolator.retrieve());
  }
  // Book Ntuple
  bookNtuple();
  if (!m_inputUpCol.empty()) bookUpNtuple();
  if (!m_inputLowCol.empty()) bookLowNtuple();
  if (m_doMatching && !m_inputUpCol.empty() && !m_inputLowCol.empty()) bookMatchingNtuple();
  ATH_MSG_DEBUG("Initialize() of FillTrack successful");
  return StatusCode::SUCCESS;
}
 
//=====================================================================
// finalize()
//=====================================================================
StatusCode InDetAlignFillTrack::finalize() {
  if (msgLvl(MSG::DEBUG)) {
    msg(MSG::DEBUG) << "Finalize() of FillTrack" << endmsg;
 
    msg(MSG::DEBUG) << "________________________________________________________" << endmsg;
    msg(MSG::DEBUG) << endmsg;
    msg(MSG::DEBUG) << " InDetAlignFillTrack Summary: " << endmsg;
    msg(MSG::DEBUG) << " - " << m_events << " events" << endmsg;
    msg(MSG::DEBUG) << " - " << m_totaltrks << " tracks" << endmsg;
    msg(MSG::DEBUG) << " - " << m_totalhits << " hits" << endmsg;
    msg(MSG::DEBUG) << "  - " << m_totalPixhits << " Pixel hits" << endmsg;
    msg(MSG::DEBUG) << "  - " << m_totalSCThits << " SCT hits" << endmsg;
    msg(MSG::DEBUG) << "  - " << m_totalTRThits << " TRT hits" << endmsg;
    msg(MSG::DEBUG) << "________________________________________________________" << endmsg;
 
    if (m_inputUpCol != "") {
      msg(MSG::DEBUG) << " Up Track Summary: " << endmsg;
      msg(MSG::DEBUG) << " - " << m_totalUptrks << " tracks" << endmsg;
      msg(MSG::DEBUG) << " - " << m_totalUphits << " hits" << endmsg;
      msg(MSG::DEBUG) << "  - " << m_totalUpPixhits << " Pixel hits" << endmsg;
      msg(MSG::DEBUG) << "  - " << m_totalUpSCThits << " SCT hits" << endmsg;
      msg(MSG::DEBUG) << "  - " << m_totalUpTRThits << " TRT hits" << endmsg;
      msg(MSG::DEBUG) << "________________________________________________________" << endmsg;
    }
 
    if (m_inputLowCol != "") {
      msg(MSG::DEBUG) << " Low Track Summary: " << endmsg;
      msg(MSG::DEBUG) << " - " << m_totalLowtrks << " tracks" << endmsg;
      msg(MSG::DEBUG) << " - " << m_totalLowhits << " hits" << endmsg;
      msg(MSG::DEBUG) << "  - " << m_totalLowPixhits << " Pixel hits" << endmsg;
      msg(MSG::DEBUG) << "  - " << m_totalLowSCThits << " SCT hits" << endmsg;
      msg(MSG::DEBUG) << "  - " << m_totalLowTRThits << " TRT hits" << endmsg;
      msg(MSG::DEBUG) << "________________________________________________________" << endmsg;
    }
 
    msg(MSG::DEBUG) << endmsg;
  }
 
  return StatusCode::SUCCESS;
}
 
//=====================================================================
// FillTrack()
//=====================================================================
StatusCode InDetAlignFillTrack::FillTrack() {
  ATH_MSG_DEBUG("In FillTrack()");
  ATH_MSG_DEBUG(" event " << m_events);
  StatusCode sc;
  
  const EventContext& ctx = Gaudi::Hive::currentContext();
  const TrackCollection* tracks;// = new TrackCollection;
  const TrackCollection* Uptracks;// = new TrackCollection;
  const TrackCollection* Lowtracks;// = new TrackCollection;
 
  // retrieve all tracks from TDS
  ATH_CHECK(evtStore()->retrieve(tracks, m_inputCol));
 
  // retrieve all Up tracks from TDS
  if (m_inputUpCol != "") {
    ATH_CHECK(evtStore()->retrieve(Uptracks, m_inputUpCol));
  }
 
  // retrieve all Low tracks from TDS
  if (m_inputLowCol != "") {
    ATH_CHECK(evtStore()->retrieve(Lowtracks, m_inputLowCol));
  }
 
  m_nt_ntracks = tracks->size();
  ATH_MSG_DEBUG("Retrieved Track Collection size: " << tracks->size());
 
  if (m_inputUpCol != "") {
    m_nt_nUptracks = Uptracks->size();
    ATH_MSG_DEBUG("Retrieved Up Track Collection size: " << Uptracks->size());
  }
 
  if (m_inputLowCol != "") {
    m_nt_nLowtracks = Lowtracks->size();
    ATH_MSG_DEBUG("Retrieved Low Track Collection size: " << Lowtracks->size());
  }
 
  ATH_MSG_DEBUG("Printing input track collection");
  m_totaltrks += dumpTrackCol(ctx, tracks);
  if (m_inputUpCol != "") m_totalUptrks += dumpTrackCol(ctx, Uptracks, "Up");
  if (m_inputLowCol != "") m_totalLowtrks += dumpTrackCol(ctx, Lowtracks, "Low");
 
  // matching
  if (m_doMatching && m_inputUpCol != "" && m_inputLowCol != "")
    if (StatusCode::SUCCESS != dumpMatching(Uptracks, Lowtracks)) {
      ATH_MSG_ERROR("dumpMatching failure");
      return StatusCode::FAILURE;
    }
 
 
  // if truth is available...
  if (m_doTruth) {
    int nTracks = 0;
 
    const TrackTruthCollection* truthCol = nullptr;
 
    // retrieve all track truth collection from TDS
    if (StatusCode::SUCCESS != evtStore()->retrieve(truthCol, m_TruthTrkCol)) {
      ATH_MSG_ERROR("Cannot find " << m_inputCol);
      return StatusCode::FAILURE;
    } else {
      if (!truthCol) {
        ATH_MSG_ERROR( "Failure retrieving " << m_TruthTrkCol );
        return StatusCode::FAILURE;
      }
 
      if (msgLvl(MSG::DEBUG)) {
        msg(MSG::DEBUG) << "Collection with name " << m_TruthTrkCol << " found in StoreGate" << endmsg;
        msg(MSG::DEBUG) << "Retrieved " << truthCol->size() << " truth tracks from StoreGate" << endmsg;
      }
 
      m_nt_nmctracks = truthCol->size();
 
      TrackCollection::const_iterator trackItr = tracks->begin();
      TrackCollection::const_iterator trackItrE = tracks->end();
 
      //looping over tracks
      for (; trackItr != trackItrE && nTracks < maxTracks; ++trackItr) {
        const Trk::Track* track = *trackItr;
        if (track == nullptr) {
          ATH_MSG_WARNING("No associated Trk::Track object found for track "
                          << nTracks);
          continue;
        }
        //Coverity fix: 14309: useless check. Commented out
        //if (truthCol) {
 
        // the key for the truth std::map is an ElementLink<TrackCollection> object
        // comprises a pointer to the track and reconstructed track collection
        ElementLink<TrackCollection> trackLink;
        trackLink.setElement(const_cast<Trk::Track*>(track));
        trackLink.setStorableObject(*tracks);
        const ElementLink<TrackCollection> trackLink2 = trackLink;
 
        // trying to find the std::map entry for this reconstructed track
        TrackTruthCollection::const_iterator found = truthCol->find(trackLink2);
 
        if (found != truthCol->end()) {
          // getting the TrackTruth object - the map element
          TrackTruth trkTruth = found->second;
          ATH_MSG_DEBUG("got trkTruth");
 
          // probability of the reco<->truth match
          float trkTruthProb = trkTruth.probability();
 
          const HepMcParticleLink& HMPL = trkTruth.particleLink();
 
          if (HMPL.isValid()) {
#ifdef HEPMC3
            HepMC::ConstGenParticlePtr genParticle = HMPL.scptr();
#else
            const HepMC::GenParticle* genParticle = HMPL.cptr();
#endif
 
            double charge = 1.0;
            if (genParticle->pdg_id() < 0) charge = -charge;
 
            Amg::Vector3D productionVertex(genParticle->production_vertex()->position().x(),
                                           genParticle->production_vertex()->position().y(),
                                           genParticle->production_vertex()->position().z());
 
            if (msgLvl(MSG::DEBUG)) {
              msg(MSG::DEBUG) << nTracks << ". Generated Particle " <<  genParticle << endmsg;
            }
 
            float genPt = std::sqrt((genParticle->momentum().x()) * (genParticle->momentum().x())
                               + (genParticle->momentum().y()) * (genParticle->momentum().y()));
 
            ATH_MSG_DEBUG("   * pt " << genPt / CLHEP::GeV << " CLHEP::GeV/c"
                                     << ", p " << genParticle->momentum().e() / CLHEP::GeV << " CLHEP::GeV/c"
                                     << ", eta " << genParticle->momentum().eta()
                                     << ", phi " << genParticle->momentum().phi() << " CLHEP::rad");
 
            m_nt_mc_trkistruth[nTracks] = 1;
            m_nt_mc_Trk_pdg[nTracks] = genParticle->pdg_id();
            m_nt_mc_Trk_prob[nTracks] = trkTruthProb;
            float pX = genParticle->momentum().px();
            float pY = genParticle->momentum().py();
            float genParticlePt = std::sqrt((pX * pX) + (pY * pY));
            m_nt_mc_Trk_genParticlePt[nTracks] = genParticlePt;
            m_nt_mc_Trk_genParticleEta[nTracks] = genParticle->momentum().eta();
            m_nt_mc_Trk_genParticlePhi[nTracks] = genParticle->momentum().phi();
 
            if (genParticle->pdg_id() == 0) ATH_MSG_WARNING("Particle with PDG 0!");
            else if (!genParticle->production_vertex()) ATH_MSG_WARNING(
                "No GenVertex (generator level) production vertex found!");
            else {
              // currently cannot configure the TruthToTrack tool properly
 
              const Trk::TrackParameters* generatedTrackPerigee = nullptr;
 
              //using a tool to produce perigee track parameters from generated parameters
              generatedTrackPerigee = m_truthToTrack->makePerigeeParameters(genParticle);
 
              if (!generatedTrackPerigee) {
                if (msgLvl(MSG::DEBUG)) {
                  msg(MSG::DEBUG) << "Unable to extrapolate genParticle to perigee!" << endmsg;
                  msg(MSG::DEBUG) << "Trying to extrapolate directly to exclude material effects!" << endmsg;
                }
 
                const TrackRecordCollection* recordCollection = nullptr;
 
                sc = evtStore()->retrieve(recordCollection, "CaloEntryLayer");
                if (sc == StatusCode::FAILURE) {
                  ATH_MSG_ERROR("Could not get track record!");
                  return sc;
                }
                ATH_MSG_DEBUG("reading from track record, size = "
                              << recordCollection->size());
 
                int nmctracks = 0;
 
                for (TrackRecordCollection::const_iterator record = recordCollection->begin();
                     record != recordCollection->end(); ++record) {
                  if (std::abs((*record).GetPDGCode()) != 13) continue;
                  HepGeom::Point3D<double> productionVertex = (*record).GetPosition();
                  double charge = (*record).GetPDGCode() > 0 ? -1.0 : 1.0;
                  
 
                  Amg::Vector3D direction((*record).GetMomentum().x(),
                                          (*record).GetMomentum().y(),
                                          (*record).GetMomentum().z());
 
                  double momentum = direction.mag();
                  if (momentum < 500) continue;
                  double genPar_qOverP = 1. / direction.mag();
                  direction *= genPar_qOverP;
                  if (charge < 0) genPar_qOverP = -genPar_qOverP;
 
 
                  double genPar_phi = direction.phi();
                  if (genPar_phi < 0.) genPar_phi = genPar_phi + 2.0*M_PI;
 
                  ATH_MSG_DEBUG("Production vertex (x,y,z): ("
                                << productionVertex.x() << ", "
                                << productionVertex.y() << ", "
                                << productionVertex.z() << ")");
 
                  double genPar_theta = direction.theta();
 
                  // Create a planar surface and transform the vertex information to a TrackParameters object
                  Amg::Transform3D globalSurfaceCentre;
                  globalSurfaceCentre.setIdentity();
                  globalSurfaceCentre *= Amg::Translation3D(productionVertex.x(),
                                                             productionVertex.y(), productionVertex.z());
 
                  Trk::PlaneSurface planeSurface(globalSurfaceCentre, 5., 5.);
 
                  const Amg::Vector3D productionVertexAsGlobalPosition(productionVertex.x(),
                                                                       productionVertex.y(),
                                                                       productionVertex.z());
 
                  const Trk::AtaPlane* productionVertexTrackParams
                    = new Trk::AtaPlane(productionVertexAsGlobalPosition,
                                        genPar_phi, genPar_theta, genPar_qOverP,
                                        planeSurface);
 
                  // Create a new perigee surface
                  Trk::PerigeeSurface perigeeSurface;
 
                  if (!tracks->empty()) perigeeSurface = ((**tracks->begin()).perigeeParameters()->associatedSurface());
 
 
                  const Amg::Vector3D& perigeeGlobalPosition = perigeeSurface.center();
 
                  ATH_MSG_DEBUG("Surface global centre (x,y,z): ("
                                << perigeeGlobalPosition.x() << ", "
                                << perigeeGlobalPosition.y() << ", "
                                << perigeeGlobalPosition.z() << ")");
 
                  // Extrapolate the TrackParameters object to the perigee
 
                  // ( Establish the distance between perigee and generated vertex.
                  // If less than tolerance don't bother with the propagation )
                  const Amg::Vector3D difference = productionVertexAsGlobalPosition - perigeeGlobalPosition;
 
                  double distance = std::sqrt(difference.x() * difference.x() + difference.y() * difference.y());
                  ATH_MSG_DEBUG("Distance between perigee point and generated vertex: "
                                << distance / CLHEP::m << " m");
 
                  const Trk::TrackParameters* generatedTrackPerigee = nullptr;
 
                  // Extrapolate directly to exclude material effects!
                  if (distance > 1.e-4) {
                    ATH_MSG_DEBUG("Distance between perigee and generated vertex exceeds tolerance ("
                                  << 1.e-4 << " mm)... Extrapolating!");
 
                    generatedTrackPerigee = m_extrapolator->extrapolateDirectly(ctx,
                                                                                *productionVertexTrackParams,
                                                                                perigeeSurface,
                                                                                Trk::anyDirection,
                                                                                false,
                                                                                Trk::nonInteracting).release();
                    if (!generatedTrackPerigee) continue;
                  } else {
                    ATH_MSG_DEBUG("Distance between perigee and generated vertex is less than tolerance ("
                                  << 1.e-4 << " CLHEP::mm)... " << "No propagation to perigee required");
 
                    // Clone the parameters from the AtaPlane object on to perigee
                    generatedTrackPerigee = new Trk::Perigee(0., 0.,
                                                             genPar_phi, genPar_theta, genPar_qOverP,
                                                             Trk::PerigeeSurface(productionVertexAsGlobalPosition));
                  }
 
                  dumpPerigee(generatedTrackPerigee, nmctracks);
                  m_nt_mc_Trk_vtxX[nmctracks] = productionVertex.x();
                  m_nt_mc_Trk_vtxY[nmctracks] = productionVertex.y();
                  m_nt_mc_Trk_vtxZ[nmctracks] = productionVertex.z();
 
                  delete productionVertexTrackParams;
                  delete generatedTrackPerigee;
 
                  nmctracks++;
                }
              }
 
              if (generatedTrackPerigee) {
                dumpPerigee(generatedTrackPerigee, nTracks);
                m_nt_mc_Trk_vtxX[nTracks] = genParticle->production_vertex()->position().x();
                m_nt_mc_Trk_vtxY[nTracks] = genParticle->production_vertex()->position().y();
                m_nt_mc_Trk_vtxZ[nTracks] = genParticle->production_vertex()->position().z();
 
                delete generatedTrackPerigee;
              }
            }
          }
          m_nt_mc_trkistruth[nTracks] = 0;
        }
        //} // if (truthCol)  commented out for coverity 14309
 
        nTracks++;
      }
    }
  } // end if m_doTruth
 
  // Store TrkTrack branch
  std::string nt0id = m_ntupleName + "/TrkTrack";
  sc = m_ntupleSvc->writeRecord(nt0id);
  if (sc.isFailure()) ATH_MSG_ERROR("Could not write " << nt0id << "!");
 
  if (m_inputUpCol != "") {
    // Store TrkTrack_Up branch
    std::string nt1id = m_ntupleName + "/TrkTrack_Up";
    sc = m_ntupleSvc->writeRecord(nt1id);
    if (sc.isFailure()) ATH_MSG_ERROR("Could not write " << nt1id << "!");
  }
 
  if (m_inputLowCol != "") {
    // Store TrkTrack_Low branch
    std::string nt2id = m_ntupleName + "/TrkTrack_Low";
    sc = m_ntupleSvc->writeRecord(nt2id);
    if (sc.isFailure()) ATH_MSG_ERROR("Could not write " << nt2id << "!");
  }
 
  if (m_doMatching && m_inputUpCol != "" && m_inputLowCol != "") {
    // Store Matching Up/Low TrkTracks branch
    std::string nt3id = m_ntupleName + "/TrkTrack_Matching";
    sc = m_ntupleSvc->writeRecord(nt3id);
    if (sc.isFailure()) ATH_MSG_ERROR("Could not write " << nt3id << "!");
  }
 
 
  m_events++;
 
  // check for negative values
  if (m_totaltrks < 0) m_totaltrks = 0;
  if (m_totalhits < 0) m_totalhits = 0;
  if (m_totalPixhits < 0) m_totalPixhits = 0;
  if (m_totalSCThits < 0) m_totalSCThits = 0;
  if (m_totalTRThits < 0) m_totalTRThits = 0;
 
  if (m_inputUpCol != "") {
    if (m_totalUptrks < 0) m_totalUptrks = 0;
    if (m_totalUphits < 0) m_totalUphits = 0;
    if (m_totalUpPixhits < 0) m_totalUpPixhits = 0;
    if (m_totalUpSCThits < 0) m_totalUpSCThits = 0;
    if (m_totalUpTRThits < 0) m_totalUpTRThits = 0;
  }
 
  if (m_inputLowCol != "") {
    if (m_totalLowtrks < 0) m_totalLowtrks = 0;
    if (m_totalLowhits < 0) m_totalLowhits = 0;
    if (m_totalLowPixhits < 0) m_totalLowPixhits = 0;
    if (m_totalLowSCThits < 0) m_totalLowSCThits = 0;
    if (m_totalLowTRThits < 0) m_totalLowTRThits = 0;
  }
 
  if (m_events < 0) m_events = 0;
  // no deletion because StoreGate owns these pointers.
  //delete tracks;
  //delete Uptracks;
  //delete Lowtracks;
  return StatusCode::SUCCESS;
}
 
//=====================================================================
// bookNtuple()
//=====================================================================
void InDetAlignFillTrack::bookNtuple() {
  ATH_MSG_DEBUG("Booking Trk::Track Info...");
 
  NTupleFilePtr file1(m_ntupleSvc.get(), m_ntupleName);
  std::string nt0id = m_ntupleName + "/TrkTrack";
  std::string comments = "Trk::Track Information";
 
  NTuplePtr nt0(m_ntupleSvc.get(), nt0id);
  if (nt0) {
    ATH_MSG_DEBUG("Ntuple is already booked");
  } else {
    ATH_MSG_DEBUG("Attempting to book general ntuple");
    nt0 = m_ntupleSvc->book(nt0id, CLID_ColumnWiseTuple, comments);
 
    if (nt0) {
      StatusCode sc;
      // nt0->addItem("event", m_nt_event); // event number
      sc = nt0->addItem("nTracks", m_nt_ntracks, 0, maxTracks); // number of tracks
      if (m_doTruth) sc = nt0->addItem("mc_nTracks", m_nt_nmctracks, 0, maxTracks); // number of mc tracks
 
      // ----------------------------------------------------------------------
      // Trk::Track parameters
      sc = nt0->addItem("Trk_d0", m_nt_ntracks, m_nt_Trk_d0);
      sc = nt0->addItem("Trk_z0", m_nt_ntracks, m_nt_Trk_z0);
      sc = nt0->addItem("Trk_phi0", m_nt_ntracks, m_nt_Trk_phi0);
      sc = nt0->addItem("Trk_theta0", m_nt_ntracks, m_nt_Trk_theta0);
      sc = nt0->addItem("Trk_qoverp", m_nt_ntracks, m_nt_Trk_qoverp);
      sc = nt0->addItem("Trk_pt", m_nt_ntracks, m_nt_Trk_pt);
      // ----------------------------------------------------------------------
 
      // ----------------------------------------------------------------------
      // Trk::Track hits...
      sc = nt0->addItem("Trk_nHits", m_nt_ntracks, m_nt_Trk_nHits);
      sc = nt0->addItem("Trk_nhitsPixels", m_nt_ntracks, m_nt_Trk_nhitspix);
      sc = nt0->addItem("Trk_nhitsSCT", m_nt_ntracks, m_nt_Trk_nhitssct);
      sc = nt0->addItem("Trk_nhitsTRT", m_nt_ntracks, m_nt_Trk_nhitstrt);
 
      sc = nt0->addItem("Trk_nsharedPixels", m_nt_ntracks, m_nt_Trk_nsharedPixels);
      sc = nt0->addItem("Trk_nsharedSCT", m_nt_ntracks, m_nt_Trk_nsharedSCT);
      sc = nt0->addItem("Trk_nshared", m_nt_ntracks, m_nt_Trk_nshared);
 
      sc = nt0->addItem("Trk_nholesPixels", m_nt_ntracks, m_nt_Trk_nholesPixels);
      sc = nt0->addItem("Trk_nholesSCT", m_nt_ntracks, m_nt_Trk_nholesSCT);
      sc = nt0->addItem("Trk_nholes", m_nt_ntracks, m_nt_Trk_nholes);
 
      sc = nt0->addItem("Trk_chi2", m_nt_ntracks, m_nt_Trk_chi2);
      sc = nt0->addItem("Trk_ndof", m_nt_ntracks, m_nt_Trk_ndof);
      sc = nt0->addItem("Trk_chi2Prob", m_nt_ntracks, m_nt_Trk_chi2Prob);
      // ----------------------------------------------------------------------
 
      if (m_doTruth) {
        // ----------------------------------------------------------------------
        sc = nt0->addItem("mc_TrkIsTruth", m_nt_ntracks, m_nt_mc_trkistruth);
 
        // generated particle parameters
        sc = nt0->addItem("mc_Trk_genParticlePt", m_nt_ntracks, m_nt_mc_Trk_genParticlePt);
        sc = nt0->addItem("mc_Trk_genParticleEta", m_nt_ntracks, m_nt_mc_Trk_genParticleEta);
        sc = nt0->addItem("mc_Trk_genParticlePhi", m_nt_ntracks, m_nt_mc_Trk_genParticlePhi);
 
        // MonteCarlo Track parameters
        sc = nt0->addItem("mc_Trk_d0", m_nt_ntracks, m_nt_mc_Trk_d0);
        sc = nt0->addItem("mc_Trk_z0", m_nt_ntracks, m_nt_mc_Trk_z0);
        sc = nt0->addItem("mc_Trk_phi0", m_nt_ntracks, m_nt_mc_Trk_phi0);
        sc = nt0->addItem("mc_Trk_theta", m_nt_ntracks, m_nt_mc_Trk_theta0);
        sc = nt0->addItem("mc_Trk_eta", m_nt_ntracks, m_nt_mc_Trk_eta);
        sc = nt0->addItem("mc_Trk_qoverp", m_nt_ntracks, m_nt_mc_Trk_qoverp);
        sc = nt0->addItem("mc_Trk_qoverpt", m_nt_ntracks, m_nt_mc_Trk_qoverpt);
        sc = nt0->addItem("mc_Trk_pt", m_nt_ntracks, m_nt_mc_Trk_pt);
        sc = nt0->addItem("mc_Trk_charge", m_nt_ntracks, m_nt_mc_Trk_charge);
        sc = nt0->addItem("mc_Trk_prob", m_nt_ntracks, m_nt_mc_Trk_prob);
        sc = nt0->addItem("mc_Trk_pdg", m_nt_ntracks, m_nt_mc_Trk_pdg);
 
        sc = nt0->addItem("mc_Trk_vtxX", m_nt_ntracks, m_nt_mc_Trk_vtxX);
        sc = nt0->addItem("mc_Trk_vtxY", m_nt_ntracks, m_nt_mc_Trk_vtxY);
        sc = nt0->addItem("mc_Trk_vtxZ", m_nt_ntracks, m_nt_mc_Trk_vtxZ);
        // ----------------------------------------------------------------------
      }
 
      if (sc.isFailure()) ATH_MSG_FATAL("Failed ntupleSvc()");
      else ATH_MSG_DEBUG("Ntuple " << nt0id << " has been booked successfully! ");
    } else {
      ATH_MSG_ERROR("Error booking ntuple");
    }
  }
 
  // return;
}
 
//=====================================================================
// bookUpNtuple()
//=====================================================================
void InDetAlignFillTrack::bookUpNtuple() {
  ATH_MSG_DEBUG("Booking Up Trk::Track Info...");
 
  std::string nt1id = m_ntupleName + "/TrkTrack_Up";
  std::string comments = "Trk::UpTrack Information";
 
  NTuplePtr nt1(m_ntupleSvc.get(), nt1id);
  if (nt1) {
    ATH_MSG_DEBUG("Ntuple is already booked");
  } else {
    ATH_MSG_DEBUG("Attempting to book general ntuple");
    nt1 = m_ntupleSvc->book(nt1id, CLID_ColumnWiseTuple, comments);
 
    if (nt1) {
      StatusCode sc;
      // nt1->addItem("event", m_nt_event); // event number
      sc = nt1->addItem("nTracks_Up", m_nt_nUptracks, 0, maxTracks); // number of tracks
 
      // ----------------------------------------------------------------------
      // Trk::Track parameters
      sc = nt1->addItem("Trk_d0_Up", m_nt_nUptracks, m_nt_Trk_d0_Up);
      sc = nt1->addItem("Trk_z0_Up", m_nt_nUptracks, m_nt_Trk_z0_Up);
      sc = nt1->addItem("Trk_phi0_Up", m_nt_nUptracks, m_nt_Trk_phi0_Up);
      sc = nt1->addItem("Trk_theta0_Up", m_nt_nUptracks, m_nt_Trk_theta0_Up);
      sc = nt1->addItem("Trk_qoverp_Up", m_nt_nUptracks, m_nt_Trk_qoverp_Up);
      sc = nt1->addItem("Trk_pt_Up", m_nt_nUptracks, m_nt_Trk_pt_Up);
      // ----------------------------------------------------------------------
 
      // ----------------------------------------------------------------------
      // Trk::Track hits...
      sc = nt1->addItem("Trk_nHits_Up", m_nt_nUptracks, m_nt_Trk_nHits_Up);
      sc = nt1->addItem("Trk_nhitsPixels_Up", m_nt_nUptracks, m_nt_Trk_nhitspix_Up);
      sc = nt1->addItem("Trk_nhitsSCT_Up", m_nt_nUptracks, m_nt_Trk_nhitssct_Up);
      sc = nt1->addItem("Trk_nhitsTRT_Up", m_nt_nUptracks, m_nt_Trk_nhitstrt_Up);
 
      sc = nt1->addItem("Trk_nsharedPixels_Up", m_nt_nUptracks, m_nt_Trk_nsharedPixels_Up);
      sc = nt1->addItem("Trk_nsharedSCT_Up", m_nt_nUptracks, m_nt_Trk_nsharedSCT_Up);
      sc = nt1->addItem("Trk_nshared_Up", m_nt_nUptracks, m_nt_Trk_nshared_Up);
 
      sc = nt1->addItem("Trk_nholesPixels_Up", m_nt_nUptracks, m_nt_Trk_nholesPixels_Up);
      sc = nt1->addItem("Trk_nholesSCT_Up", m_nt_nUptracks, m_nt_Trk_nholesSCT_Up);
      sc = nt1->addItem("Trk_nholes_Up", m_nt_nUptracks, m_nt_Trk_nholes_Up);
 
      sc = nt1->addItem("Trk_chi2_Up", m_nt_nUptracks, m_nt_Trk_chi2_Up);
      sc = nt1->addItem("Trk_ndof_Up", m_nt_nUptracks, m_nt_Trk_ndof_Up);
      sc = nt1->addItem("Trk_chi2Prob_Up", m_nt_nUptracks, m_nt_Trk_chi2Prob_Up);
      // ----------------------------------------------------------------------
 
      if (sc.isFailure()) ATH_MSG_FATAL("Failed ntupleSvc()");
      else ATH_MSG_DEBUG("Ntuple " << nt1id << " has been booked successfully! ");
    } else {
      ATH_MSG_ERROR("Error booking ntuple");
    }
  }
}
 
//=====================================================================
// bookLowNtuple()
//=====================================================================
void InDetAlignFillTrack::bookLowNtuple() {
  ATH_MSG_DEBUG("Booking Low Trk::Track Info...");
 
  std::string nt2id = m_ntupleName + "/TrkTrack_Low";
  std::string comments = "Trk::LowTrack Information";
 
  NTuplePtr nt2(m_ntupleSvc.get(), nt2id);
  if (nt2) {
    ATH_MSG_DEBUG("Ntuple is already booked");
  } else {
    ATH_MSG_DEBUG("Attempting to book general ntuple");
    nt2 = m_ntupleSvc->book(nt2id, CLID_ColumnWiseTuple, comments);
 
    if (nt2) {
      StatusCode sc;
      // sc = nt2->addItem("event", m_nt_event); // event number
      sc = nt2->addItem("nTracks_Low", m_nt_nLowtracks, 0, maxTracks); // number of tracks
 
      // ----------------------------------------------------------------------
      // Trk::Track parameters
      sc = nt2->addItem("Trk_d0_Low", m_nt_nLowtracks, m_nt_Trk_d0_Low);
      sc = nt2->addItem("Trk_z0_Low", m_nt_nLowtracks, m_nt_Trk_z0_Low);
      sc = nt2->addItem("Trk_phi0_Low", m_nt_nLowtracks, m_nt_Trk_phi0_Low);
      sc = nt2->addItem("Trk_theta0_Low", m_nt_nLowtracks, m_nt_Trk_theta0_Low);
      sc = nt2->addItem("Trk_qoverp_Low", m_nt_nLowtracks, m_nt_Trk_qoverp_Low);
      sc = nt2->addItem("Trk_pt_Low", m_nt_nLowtracks, m_nt_Trk_pt_Low);
      // ----------------------------------------------------------------------
 
      // ----------------------------------------------------------------------
      // Trk::Track hits...
      sc = nt2->addItem("Trk_nHits_Low", m_nt_nLowtracks, m_nt_Trk_nHits_Low);
      sc = nt2->addItem("Trk_nhitsPixels_Low", m_nt_nLowtracks, m_nt_Trk_nhitspix_Low);
      sc = nt2->addItem("Trk_nhitsSCT_Low", m_nt_nLowtracks, m_nt_Trk_nhitssct_Low);
      sc = nt2->addItem("Trk_nhitsTRT_Low", m_nt_nLowtracks, m_nt_Trk_nhitstrt_Low);
 
      sc = nt2->addItem("Trk_nsharedPixels_Low", m_nt_nLowtracks, m_nt_Trk_nsharedPixels_Low);
      sc = nt2->addItem("Trk_nsharedSCT_Low", m_nt_nLowtracks, m_nt_Trk_nsharedSCT_Low);
      sc = nt2->addItem("Trk_nshared_Low", m_nt_nLowtracks, m_nt_Trk_nshared_Low);
 
      sc = nt2->addItem("Trk_nholesPixels_Low", m_nt_nLowtracks, m_nt_Trk_nholesPixels_Low);
      sc = nt2->addItem("Trk_nholesSCT_Low", m_nt_nLowtracks, m_nt_Trk_nholesSCT_Low);
      sc = nt2->addItem("Trk_nholes_Low", m_nt_nLowtracks, m_nt_Trk_nholes_Low);
 
      sc = nt2->addItem("Trk_chi2_Low", m_nt_nLowtracks, m_nt_Trk_chi2_Low);
      sc = nt2->addItem("Trk_ndof_Low", m_nt_nLowtracks, m_nt_Trk_ndof_Low);
      sc = nt2->addItem("Trk_chi2Prob_Low", m_nt_nLowtracks, m_nt_Trk_chi2Prob_Low);
      // ----------------------------------------------------------------------
      if (sc.isFailure()) msg(MSG::FATAL) << "Failed ntupleSvc()" << endmsg;
      else msg(MSG::DEBUG) << "Ntuple " << nt2id << " has been booked successfully! " << endmsg;
    } else {
      ATH_MSG_ERROR("Error booking ntuple");
    }
  }
}
 
//=====================================================================
// bookMatchingNtuple()
//=====================================================================
void InDetAlignFillTrack::bookMatchingNtuple() {
  ATH_MSG_DEBUG("Booking Matching between Up and Low Trk::Track Collections...");
 
  std::string nt3id = m_ntupleName + "/TrkTrack_Matching";
  std::string comments = "Matching between Up and Low Trk::Track Collections";
 
  NTuplePtr nt3(m_ntupleSvc.get(), nt3id);
  if (nt3) {
    ATH_MSG_DEBUG("Ntuple is already booked");
  } else {
    ATH_MSG_DEBUG("Attempting to book general ntuple");
    m_ntupleSvc->book(nt3id, CLID_ColumnWiseTuple, comments);
 
    if (nt3) {
      StatusCode sc;
      // sc = nt3->addItem("event", m_nt_event); // event number
 
      sc = nt3->addItem("nTracks_Match", m_nt_matchingTrk, 0, maxTracks); // number of tracks
 
      // ----------------------------------------------------------------------
      // Matching for the usual Trk::Track parameters
      sc = nt3->addItem("Trk_delta_d0", m_nt_matchingTrk, m_nt_Trk_delta_d0);
      sc = nt3->addItem("Trk_delta_phi0", m_nt_matchingTrk, m_nt_Trk_delta_phi0);
      sc = nt3->addItem("Trk_delta_theta0", m_nt_matchingTrk, m_nt_Trk_delta_theta0);
      sc = nt3->addItem("Trk_delta_eta", m_nt_matchingTrk, m_nt_Trk_delta_eta);
      sc = nt3->addItem("Trk_delta_z0", m_nt_matchingTrk, m_nt_Trk_delta_z0);
      sc = nt3->addItem("Trk_delta_qoverpt", m_nt_matchingTrk, m_nt_Trk_delta_qoverpt);
      sc = nt3->addItem("Trk_delta_pt", m_nt_matchingTrk, m_nt_Trk_delta_pt);
      sc = nt3->addItem("Trk_delta_charge", m_nt_matchingTrk, m_nt_Trk_delta_charge);
      // ----------------------------------------------------------------------
 
      if (sc.isFailure()) msg(MSG::FATAL) << "Failed ntupleSvc()" << endmsg;
      else msg(MSG::DEBUG) << "Ntuple " << nt3id << " has been booked successfully! " << endmsg;
    } else {
      if (msgLvl(MSG::ERROR)) msg(MSG::DEBUG) << "Error booking ntuple" << endmsg;
    }
  }
 
  return;
}
 
//=====================================================================
//  InDetAlignFillTrack::dumpTrackCol()
//=====================================================================
int InDetAlignFillTrack::dumpTrackCol(const EventContext& ctx, const TrackCollection* tracks) {
  return dumpTrackCol(ctx, tracks, "");
}
 
//=====================================================================
//  InDetAlignFillTrack::dumpTrackCol()
//=====================================================================
int InDetAlignFillTrack::dumpTrackCol(const EventContext& ctx,
                                      const TrackCollection* tracks,
                                      const std::string& TrkColName) {
  ATH_MSG_DEBUG("In dump" << TrkColName << "TrackCol()");
 
  int itrk = 0;
 
  TrackCollection::const_iterator trackItr = tracks->begin();
  TrackCollection::const_iterator trackItrE = tracks->end();
 
  //looping over tracks
  for (; trackItr != trackItrE && itrk < maxTracks; ++trackItr) {
    if (*trackItr != nullptr) dumpTrack(ctx, itrk, (*trackItr), TrkColName);
 
    itrk++;
  }
 
  return itrk;
}
 
//=====================================================================
//  InDetAlignFillTrack::dumpTrack()
//=====================================================================
void InDetAlignFillTrack::dumpTrack(const EventContext& ctx,
                                    int itrk, const Trk::Track* trk,
                                    const std::string& TrkColName) {
  ATH_MSG_VERBOSE("In dump" << TrkColName << "Track()");
 
  const Trk::Perigee* aMeasPer = trk->perigeeParameters();
 
  if (aMeasPer == nullptr) {
    ATH_MSG_ERROR("Could not get Trk::MeasuredPerigee");
  } else {
    double d0 = aMeasPer->parameters()[Trk::d0];
    double z0 = aMeasPer->parameters()[Trk::z0];
    double phi0 = aMeasPer->parameters()[Trk::phi0];
    double theta = aMeasPer->parameters()[Trk::theta];
    double qOverP = aMeasPer->parameters()[Trk::qOverP];
 
    if (msgLvl(MSG::DEBUG)) {
      msg(MSG::DEBUG) << itrk << ". " << TrkColName
                      << " Track Parameters (d0, z0, phi0, theta, q/p)" << endmsg;
      msg(MSG::DEBUG) << " " << d0 << ", " << z0 << ", "
                      << phi0 << ", " << theta << ", " << qOverP << endmsg;
    }
 
    float transverseMomentum = std::sqrt((aMeasPer->momentum().x()) * (aMeasPer->momentum().x())
                                    + (aMeasPer->momentum().y()) * (aMeasPer->momentum().y()));
 
    ATH_MSG_DEBUG("  p = " << aMeasPer->momentum().mag() / CLHEP::GeV << " CLHEP::GeV/c, "
                           << " pT = " << transverseMomentum / CLHEP::GeV << " CLHEP::GeV/c");
 
    // number of hits
    int nHits = (*trk).measurementsOnTrack()->size();
    ATH_MSG_DEBUG(" - number of hits : " << nHits);
    if (nHits != 0) {
      if (TrkColName == "Up") m_totalUphits += nHits;
      else if (TrkColName == "Low") m_totalLowhits += nHits;
      else m_totalhits += nHits;
    }
 
    // number of hits, shared hits and holes
    int nhitspix = 0, nhitssct = 0, nhitstrt = 0;
    int nshared = 0, nshpix = 0, nshsct = 0;
    int nholes = 0, nhpix = 0, nhsct = 0;
 
    xAOD::TrackParticle* trackPart = m_particleCreator->createParticle(ctx, *trk);
    uint8_t iSummaryValue(0); // Dummy counter to retrieve summary values
 
    if (not trackPart) ATH_MSG_ERROR("Could not get xAOD::TrackParticle");
 
    else {
      // hits
      nhitspix = trackPart->summaryValue(iSummaryValue, xAOD::numberOfPixelHits) ? iSummaryValue : 0;
      nhitssct = trackPart->summaryValue(iSummaryValue, xAOD::numberOfSCTHits) ? iSummaryValue : 0;
      nhitstrt = trackPart->summaryValue(iSummaryValue, xAOD::numberOfTRTHits) ? iSummaryValue : 0;
 
      if (msgLvl(MSG::DEBUG)) {
        msg(MSG::DEBUG) << "   -- number of Pixel hits : " << nhitspix << endmsg;
        msg(MSG::DEBUG) << "   -- number of SCT hits : " << nhitssct << endmsg;
        msg(MSG::DEBUG) << "   -- number of TRT hits : " << nhitstrt << endmsg;
      }
 
      if (nhitspix != 0) {
        if (TrkColName == "Up") m_totalUpPixhits += nhitspix;
        else if (TrkColName == "Low") m_totalLowPixhits += nhitspix;
        else m_totalPixhits += nhitspix;
      }
      if (nhitssct != 0) {
        if (TrkColName == "Up") m_totalUpSCThits += nhitssct;
        else if (TrkColName == "Low") m_totalLowSCThits += nhitssct;
        else m_totalSCThits += nhitssct;
      }
      if (nhitstrt != 0) {
        if (TrkColName == "Up") m_totalUpTRThits += nhitstrt;
        else if (TrkColName == "Low") m_totalLowTRThits += nhitstrt;
        else m_totalTRThits += nhitstrt;
      }
 
      // shared hits
      nshpix = trackPart->summaryValue(iSummaryValue, xAOD::numberOfPixelSharedHits) ? iSummaryValue : 0;
      nshsct = trackPart->summaryValue(iSummaryValue, xAOD::numberOfSCTSharedHits) ? iSummaryValue : 0;
      nshared = nshpix + nshsct;
 
      if (nshpix < 0) nshpix = 0;
      if (nshsct < 0) nshsct = 0;
      if (nshared < 0) nshared = 0;
 
      if (msgLvl(MSG::DEBUG)) {
        msg(MSG::DEBUG) << " - number of shared hits : " << nshared << endmsg;
        msg(MSG::DEBUG) << "  -- number of Pixel shared hits : " << nshpix << endmsg;
        msg(MSG::DEBUG) << "  -- number of SCT shared hits : " << nshsct << endmsg;
      }
 
      // holes
      nhpix = trackPart->summaryValue(iSummaryValue, xAOD::numberOfPixelHoles) ? iSummaryValue : 0;
      nhsct = trackPart->summaryValue(iSummaryValue, xAOD::numberOfSCTHoles) ? iSummaryValue : 0;
      nholes = nhpix + nhsct;
 
      if (nhpix < 0) nhpix = 0;
      if (nhsct < 0) nhsct = 0;
      if (nholes < 0) nholes = 0;
 
      if (msgLvl(MSG::DEBUG)) {
        msg(MSG::DEBUG) << " - number of Pixel holes : " << nhpix << endmsg;
        msg(MSG::DEBUG) << "  -- number of SCT holes : " << nhsct << endmsg;
        msg(MSG::DEBUG) << "  -- number of holes : " << nholes << endmsg;
      }
    }
 
    // get fit quality and chi2 probability of track
    // chi2Prob = TMath::Prob(chi2,DoF) ROOT function
    double chi2Prob = 0.;
    const Trk::FitQuality* fitQual = (*trk).fitQuality();
    if (fitQual == nullptr) {
      ATH_MSG_ERROR("No fit quality assigned to the track");
      chi2Prob = -1e12; // return big value
    } else {
      if (fitQual->chiSquared() > 0. && fitQual->numberDoF() > 0) {
        Genfun::CumulativeChiSquare probabilityFunction(fitQual->numberDoF());
        chi2Prob = 1 - probabilityFunction(fitQual->chiSquared());
 
        if (msgLvl(MSG::DEBUG)) {
          msg(MSG::DEBUG) << "  - chi2             : " << fitQual->chiSquared() << endmsg;
          msg(MSG::DEBUG) << "  - ndof             : " << fitQual->numberDoF() << endmsg;
          msg(MSG::DEBUG) << "  - chi2 propability : " << chi2Prob << endmsg;
        }
      }
    }
    // Fill ntuple
    if (TrkColName == "Up") {
      m_nt_Trk_d0_Up[itrk] = d0;
      m_nt_Trk_z0_Up[itrk] = z0;
      m_nt_Trk_phi0_Up[itrk] = phi0;
      m_nt_Trk_theta0_Up[itrk] = theta;
      m_nt_Trk_qoverp_Up[itrk] = qOverP;
      m_nt_Trk_pt_Up[itrk] = transverseMomentum;
 
      m_nt_Trk_nHits_Up[itrk] = nHits;
      m_nt_Trk_nhitspix_Up[itrk] = nhitspix;
      m_nt_Trk_nhitssct_Up[itrk] = nhitssct;
      m_nt_Trk_nhitstrt_Up[itrk] = nhitstrt;
 
      m_nt_Trk_nsharedPixels_Up[itrk] = nshpix;
      m_nt_Trk_nsharedSCT_Up[itrk] = nshsct;
      m_nt_Trk_nshared_Up[itrk] = nshared;
 
      m_nt_Trk_nholesPixels_Up[itrk] = nhpix;
      m_nt_Trk_nholesSCT_Up[itrk] = nhsct;
      m_nt_Trk_nholes_Up[itrk] = nholes;
      if (fitQual) {
        m_nt_Trk_chi2_Up[itrk] = fitQual->chiSquared();
        m_nt_Trk_ndof_Up[itrk] = fitQual->numberDoF();
      } else {
        m_nt_Trk_chi2_Up[itrk] = 0;
        m_nt_Trk_ndof_Up[itrk] = 0;
      }
      m_nt_Trk_chi2Prob_Up[itrk] = chi2Prob;
    } else if (TrkColName == "Low") {
      m_nt_Trk_d0_Low[itrk] = d0;
      m_nt_Trk_z0_Low[itrk] = z0;
      m_nt_Trk_phi0_Low[itrk] = phi0;
      m_nt_Trk_theta0_Low[itrk] = theta;
      m_nt_Trk_qoverp_Low[itrk] = qOverP;
      m_nt_Trk_pt_Low[itrk] = transverseMomentum;
 
      m_nt_Trk_nHits_Low[itrk] = nHits;
      m_nt_Trk_nhitspix_Low[itrk] = nhitspix;
      m_nt_Trk_nhitssct_Low[itrk] = nhitssct;
      m_nt_Trk_nhitstrt_Low[itrk] = nhitstrt;
 
      m_nt_Trk_nsharedPixels_Low[itrk] = nshpix;
      m_nt_Trk_nsharedSCT_Low[itrk] = nshsct;
      m_nt_Trk_nshared_Low[itrk] = nshared;
 
      m_nt_Trk_nholesPixels_Low[itrk] = nhpix;
      m_nt_Trk_nholesSCT_Low[itrk] = nhsct;
      m_nt_Trk_nholes_Low[itrk] = nholes;
      if (fitQual) {
        m_nt_Trk_chi2_Low[itrk] = fitQual->chiSquared();
        m_nt_Trk_ndof_Low[itrk] = fitQual->numberDoF();
      } else {
        m_nt_Trk_chi2_Low[itrk] = 0;
        m_nt_Trk_ndof_Low[itrk] = 0;
      }
      m_nt_Trk_chi2Prob_Low[itrk] = chi2Prob;
    } else {
      m_nt_Trk_d0[itrk] = d0;
      m_nt_Trk_z0[itrk] = z0;
      m_nt_Trk_phi0[itrk] = phi0;
      m_nt_Trk_theta0[itrk] = theta;
      m_nt_Trk_qoverp[itrk] = qOverP;
      m_nt_Trk_pt[itrk] = transverseMomentum;
 
      m_nt_Trk_nHits[itrk] = nHits;
      m_nt_Trk_nhitspix[itrk] = nhitspix;
      m_nt_Trk_nhitssct[itrk] = nhitssct;
      m_nt_Trk_nhitstrt[itrk] = nhitstrt;
 
      m_nt_Trk_nsharedPixels[itrk] = nshpix;
      m_nt_Trk_nsharedSCT[itrk] = nshsct;
      m_nt_Trk_nshared[itrk] = nshared;
 
      m_nt_Trk_nholesPixels[itrk] = nhpix;
      m_nt_Trk_nholesSCT[itrk] = nhsct;
      m_nt_Trk_nholes[itrk] = nholes;
      if (fitQual) {
        m_nt_Trk_chi2[itrk] = fitQual->chiSquared();
        m_nt_Trk_ndof[itrk] = fitQual->numberDoF();
      } else {
        m_nt_Trk_chi2[itrk] = 0;
        m_nt_Trk_ndof[itrk] = 0;
      }
      m_nt_Trk_chi2Prob[itrk] = chi2Prob;
    }
  }
 
  return;
}
 
//=====================================================================
//  InDetAlignFillTrack::dumpPerigee()
//=====================================================================
void InDetAlignFillTrack::dumpPerigee(const Trk::TrackParameters* generatedTrackPerigee,
                                      int index) {
  ATH_MSG_VERBOSE( "In dumpPerigee()" );
 
  float d0 = generatedTrackPerigee->parameters()[Trk::d0];
  float z0 = generatedTrackPerigee->parameters()[Trk::z0];
  float phi0 = generatedTrackPerigee->parameters()[Trk::phi0];
  float theta = generatedTrackPerigee->parameters()[Trk::theta];
  float eta = generatedTrackPerigee->eta();
  float charge = generatedTrackPerigee->charge();
  float qoverp = generatedTrackPerigee->parameters()[Trk::qOverP];
  float qoverpt = generatedTrackPerigee->parameters()[Trk::qOverP] / (std::sin(theta));
  float pt = (1 / qoverpt) * (charge);
  // int pdg = genParticle->pdg_id();
 
  if (msgLvl(MSG::DEBUG)) {
    msg(MSG::DEBUG) << " - Extrapolated genParticle perigee parameters "
                    << "(d0, z0, phi0, theta, q/p)" << endmsg;
    msg(MSG::DEBUG) << " " << d0 << ", " << z0 << ", "
                    << phi0 << ", " << theta << ", " << qoverp << endmsg;
 
    msg(MSG::DEBUG) << "  p = " << std::abs(1.0 / qoverp) / CLHEP::GeV << " CLHEP::GeV/c, "
                    << " pT = " << pt / CLHEP::GeV << " CLHEP::GeV/c" << endmsg;
  }
 
  m_nt_mc_Trk_d0[index] = d0;
  m_nt_mc_Trk_z0[index] = z0;
  m_nt_mc_Trk_phi0[index] = phi0;
  m_nt_mc_Trk_theta0[index] = theta;
  m_nt_mc_Trk_eta[index] = eta;
  m_nt_mc_Trk_qoverp[index] = qoverp;
  m_nt_mc_Trk_qoverpt[index] = qoverpt;
  m_nt_mc_Trk_pt[index] = pt;
  m_nt_mc_Trk_charge[index] = charge;
 
  return;
}
 
//=====================================================================
//  InDetAlignFillTrack::dumpMatching()
//=====================================================================
StatusCode InDetAlignFillTrack::dumpMatching(const TrackCollection* tracksUpper,
                                             const TrackCollection* tracksLower) {
  ATH_MSG_DEBUG("In dumpMatching()");
 
  int nTracksUpper = 0;
 
  // looping over the upper barrel tracks
  TrackCollection::const_iterator trackItrUpper = tracksUpper->begin();
  TrackCollection::const_iterator trackItrUpperE = tracksUpper->end();
  for (; trackItrUpper != trackItrUpperE; ++trackItrUpper) {
    const Trk::Track* trackUpper = *trackItrUpper;
    if (trackUpper == nullptr) {
      ATH_MSG_DEBUG("No associated Trk::Track object found for track " << nTracksUpper);
      continue;
    }
 
    const Trk::Perigee* measUpperPer = trackUpper->perigeeParameters();
 
    // Get the track parameters from the Upper Track
    float d0Up = measUpperPer->parameters()[Trk::d0];
    float phi0Up = measUpperPer->parameters()[Trk::phi0];
    float eta0Up = measUpperPer->eta();
    float z0Up = measUpperPer->parameters()[Trk::z0];
    float thetaUp = measUpperPer->parameters()[Trk::theta];
    float qOverPtUp = measUpperPer->parameters()[Trk::qOverP] * 1000 / std::sin(thetaUp);
    float chargeUp = measUpperPer->charge();
    float ptUp = measUpperPer->pT() / 1000.;
 
    if (msgLvl(MSG::DEBUG)) {
      msg(MSG::DEBUG) << nTracksUpper << ". UpTrack -> Track Parameters:" << endmsg;
      msg(MSG::DEBUG) << "     d0, z0, phi0, theta, q/p" << d0Up << ", " << z0Up << ", "
                      << phi0Up << ", " << thetaUp << ", " << qOverPtUp << endmsg;
    }
 
    int nTracksLower = 0;
 
    bool matchFound = false;
    float Matched_Low_d0 = -999;
    float Matched_Low_phi0 = -999;
    //**
    float Matched_Low_theta = -999;
    float Matched_Low_eta0 = -999;
    float Matched_Low_z0 = -999;
    float Matched_Low_qOverPt = -999;
    float Matched_Low_charge = -999;
    float Matched_Low_pt = -999;
 
    // looping over the lower barrel tracks
    DataVector<Trk::Track>::const_iterator trackItrLower = tracksLower->begin();
    DataVector<Trk::Track>::const_iterator trackItrLowerE = tracksLower->end();
    for (; trackItrLower != trackItrLowerE; ++trackItrLower) { //looping over Lower tracks
      const Trk::Track* trackLower = *trackItrLower;
      if (trackLower == nullptr) {
        ATH_MSG_DEBUG("No associated Trk::Track object found for track " << nTracksLower);
        continue;
      }
 
      const Trk::Perigee* measLowerPer = trackLower->perigeeParameters();
 
      float d0Low = measLowerPer->parameters()[Trk::d0];
      float phi0Low = measLowerPer->parameters()[Trk::phi0];
      float eta0Low = measLowerPer->eta();
      float z0Low = measLowerPer->parameters()[Trk::z0];
      float thetaLow = measLowerPer->parameters()[Trk::theta];
      float qOverPtLow = measLowerPer->parameters()[Trk::qOverP] * 1000 / std::sin(thetaLow);
      float chargeLow = measLowerPer->charge();
      float ptLow = measLowerPer->pT() / 1000.;
 
      //selecting Lower track that is closest to Upper in eta-phi
      float dphi2 = (phi0Up - phi0Low) * (phi0Up - phi0Low);
 
      //For TRT only tracks we will ignore the delta eta
      // and just require a delta phi match
      float deta2 = (eta0Up - eta0Low) * (eta0Up - eta0Low);
 
      // look for a matching track within a cone
      float dR = std::sqrt(dphi2 + deta2);
      ATH_MSG_DEBUG("dR (sqrt(dphi+deta2): " << dR);
      ATH_MSG_DEBUG("minmdR (sqrt(dphi+deta2): " << m_mindR);
      if (dR < m_mindR) {
        //  m_mindR = dR;
        Matched_Low_d0 = d0Low;
        Matched_Low_phi0 = phi0Low;
        //**
        Matched_Low_theta = thetaLow;
        Matched_Low_eta0 = eta0Low;
        Matched_Low_z0 = z0Low;
        Matched_Low_qOverPt = qOverPtLow;
        Matched_Low_charge = chargeLow;
        Matched_Low_pt = ptLow;
 
        if (dR < m_matchedRcut) {
          if (msgLvl(MSG::DEBUG)) {
            msg(MSG::DEBUG) << nTracksLower << ". LowTrack -> Track Parameters:" << endmsg;
            msg(MSG::DEBUG) << "     d0, z0, phi0, theta, q/p: " << d0Low << ", " << z0Low << ", "
                            << phi0Low << ", " << thetaLow << ", " << qOverPtLow << endmsg;
          }
 
          matchFound = true;
        }
      } else {
        ATH_MSG_DEBUG("No matching low track found!!");
      }
      nTracksLower++;
    } //looping over lower tracks
 
    if (matchFound) {
      ATH_MSG_DEBUG("Match found!");
      m_nt_matchingTrk = 1;
      m_nt_Trk_delta_d0[nTracksUpper] = d0Up - Matched_Low_d0;
      m_nt_Trk_delta_phi0[nTracksUpper] = phi0Up - Matched_Low_phi0;
      //**
      m_nt_Trk_delta_theta0[nTracksUpper] = thetaUp - Matched_Low_theta;
      m_nt_Trk_delta_eta[nTracksUpper] = eta0Up - Matched_Low_eta0;
      m_nt_Trk_delta_z0[nTracksUpper] = z0Up - Matched_Low_z0;
      m_nt_Trk_delta_qoverpt[nTracksUpper] = qOverPtUp - Matched_Low_qOverPt;
      m_nt_Trk_delta_pt[nTracksUpper] = ptUp - Matched_Low_pt;
      m_nt_Trk_delta_charge[nTracksUpper] = chargeUp - Matched_Low_charge;
    } // end match found
 
 
    nTracksUpper++;
  } //looping over upper tracks
 
  return StatusCode::SUCCESS;
}