LArStripsCrossTalkCorrector.h

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/*
  Copyright (C) 2002-2024 CERN for the benefit of the ATLAS collaboration
*/
 
//Dear emacs, this is -*-c++-*-
#ifndef LARSTRIPSCROSSTALKCORRECTOR_H
#define LARSTRIPSCROSSTALKCORRECTOR_H
 
#include "AthenaBaseComps/AthAlgorithm.h"
 
#include "StoreGate/ReadCondHandleKey.h"
#include "LArRecConditions/LArBadChannelCont.h"
#include "LArCabling/LArOnOffIdMapping.h"
#include "LArElecCalib/ILArPedestal.h"
#include "LArRawEvent/LArAccumulatedCalibDigit.h"
#include "LArRecConditions/LArBadChannelMask.h"
#include "CxxUtils/checker_macros.h"
 
#include <vector>
#include <string>
#include <bitset>
#include <array>
 
class LArEM_ID;
class LArOnlineID;
class LArAccumulatedCalibDigit;
 
//Poor man's histogramming class to monitor difference introduced by xtalk corr
class XtalkCorrHisto {
public:
  XtalkCorrHisto(const unsigned nBins, const float maxbin);
  void add(const LArAccumulatedCalibDigit* dig, const float reldiff);
  void print(MsgStream& stream, const LArOnlineID* onlId, MSG::Level lvl=MSG::INFO);
 
private:
  struct maxlistitem {
  public:
    maxlistitem(HWIdentifier chidin, int dacin , int delayin ,float reldiffin) :
      chid(chidin), dac(dacin), delay(delayin), reldiff(reldiffin) {}
    HWIdentifier chid;
    int dac;
    int delay;
    float reldiff;
  };
 
  const unsigned m_nBins;
  const float m_binwidth;
  std::vector<unsigned> m_diffs;
 
  std::vector<maxlistitem> m_maxlist;  
};
 
 
 
 
//===================================================================================
 
class ATLAS_NOT_THREAD_SAFE LArStripsCrossTalkCorrector : public AthAlgorithm
{
 public:
  using AthAlgorithm::AthAlgorithm;
 
  //standard algorithm methods
  virtual StatusCode initialize() override final;
  virtual StatusCode execute() override final;
  virtual StatusCode finalize() override final;
 
 
 private:
  
  SG::ReadCondHandleKey<LArBadChannelCont> m_BCKey {this, "BadChanKey", "LArBadChannel", "SG key for LArBadChan object"};
  SG::ReadCondHandleKey<LArBadFebCont> m_BFKey {this, "MissingFEBKey", "LArBadFeb", "SG key for miffing FEB object"};
  SG::ReadCondHandleKey<LArOnOffIdMapping>  m_cablingKey{this, "OnOffMap", "LArOnOffIdMap", "SG key for mapping object"};
  
 
  Gaudi::Property<std::vector<std::string> > m_dontUseForCorr{this,"DontUseForXtalkCorr",{}, "Types of bad channel should not be taken into accout for xtalk correction of their neighbor"};
 
 
  LArBadChannelMask m_dontUseForCorrMask;
  Gaudi::Property<std::vector<std::string> > m_dontCorr{this,"NoXtalkCorr",{}, "Types of bad channel should be ignored and not x-talk corrected"};
  LArBadChannelMask m_dontCorrMask;
 
 
 
  const LArOnlineID*  m_onlineHelper{nullptr};
  const LArEM_ID*     m_emId{nullptr};
  unsigned int        m_event_counter=0;
  //Ranges for eta and phi indices for barrel(0) and endcap(1)
  static constexpr auto m_MAXeta=std::to_array<unsigned>({448,208});
  static constexpr auto m_MINeta=std::to_array<unsigned>({1,0});
  const unsigned int  m_MAXphi=64;
  int                 m_nStrips=-1;
  //Algorithm-Properties:
  Gaudi::Property<std::vector<std::string> > m_keylist{this,"KeyList",{},"List of input keys ('HIGH','MEDIUM','LOW')"};
  Gaudi::Property<unsigned int> m_ADCsatur {this,"ADCsaturation",0,"Cutoff value to ignore saturated digits"};
  Gaudi::Property<float> m_acceptableDifference{this,"AcceptableDifference",20, "For sanity check: By how much the corrected value may differ from the original one (in %)"};
 
 
  SG::ReadCondHandleKey<ILArPedestal> m_pedKey{this,"PedestalKey","Pedestal","Key of Pedestal object"};
 
  uint16_t m_fatalFebErrorPattern{0xffff};
 
  const size_t m_noIdx{9999999};
 
  //2D Eta-phi array of strip cells. A/C side is accomodated by duplicating the number of phi-bins
  //One such array for barrel, one for endcap
  //Idexing: Barrel/EC, eta-index, phi-index
  std::array<std::vector < std::vector < const LArAccumulatedCalibDigit* > >,2> m_stripsLookUp;
 
  std::array<std::vector < std::bitset< 128 > >,2> m_knownMissingFebs;
 
  bool m_missingFEBsDone=false;
 
  std::set<HWIdentifier> m_uncorrectedIds;
 
  struct neighbour_t{
   int dist{};
   const LArAccumulatedCalibDigit* dig{};
   double ped{};
   double weight{};
 };
 
 
  XtalkCorrHisto m_differences{6,0.3};
 
  static std::string printMaxSample(const LArAccumulatedCalibDigit* thisDig);
  StatusCode initKnownMissingFebs();
 
  size_t getEtaIndex(const Identifier) const;
  size_t getPhiIndex(const Identifier) const;
 
  void correctSamples(std::vector<double>& dest, const neighbour_t& neighbor) const;
 
 
};
 
 
inline void LArStripsCrossTalkCorrector::correctSamples(std::vector<double>& dest, const LArStripsCrossTalkCorrector::neighbour_t& nb) const {
  const size_t nSamples=std::min(dest.size(),nb.dig->sampleSum().size());
  const double pedTimesTrig=nb.ped*(double)nb.dig->nTriggers();
  for (size_t i=0;i<nSamples;++i) {
    dest[i]+=nb.weight*(nb.dig->sampleSum()[i]-pedTimesTrig);
  }
  return;
}
 
inline size_t LArStripsCrossTalkCorrector::getEtaIndex(const Identifier id) const {
  if (m_emId->sampling(id)!=1) return m_noIdx; //Deal only with layer 1
  const int region = m_emId->region(id);
  const int keta = m_emId->eta(id);
  if (abs(m_emId->barrel_ec(id))== 1) { // Barrel case
    if (region==0)
      return keta;
    else
      return m_noIdx;
  }// end if barrel
  else if (abs(m_emId->barrel_ec(id))== 2) {  //Endcap case
    switch (region) {
    case 2:
      return keta;
      break;
    case 3: 
      return keta+96;
      break;
    case 4:
      return keta+144;
      break;
    default:
      return m_noIdx;
      break;
    }   
  }// end if endcap
  return m_noIdx; //endcap OW or unknown region
}
 
inline size_t LArStripsCrossTalkCorrector::getPhiIndex(const Identifier id) const {
   const int kphi = m_emId->phi(id);
   const int kside=m_emId->barrel_ec(id)>0; 
   return kphi+kside*m_MAXphi;
 }
 
 
 
#endif