BadBatmanAugmentationTool.cxx

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/*
  Copyright (C) 2002-2025 CERN for the benefit of the ATLAS collaboration
*/

// Author: Chris Young (christopher.young@cern.ch)
// This code is designed to augment EventInfo with a flag which
// labels events which are likely to suffer from excess noise
// in the EMEC-IW induced by saturation between trains. This is
// based on counting the number of clusters in this |eta| region
// of significant pT and bad LAr Quality.
#include "BadBatmanAugmentationTool.h"
 
#include "StoreGate/WriteDecorHandle.h"
 
namespace DerivationFramework {
 
  StatusCode BadBatmanAugmentationTool::initialize()
  {
 
    ATH_MSG_INFO("Init BadBatmanAugmentationTool");
 
    ATH_CHECK(m_eventInfo_key.initialize());
    ATH_CHECK(m_clusterContainer_key.initialize());
    ATH_CHECK(m_isBadBatmanKey.initialize());
 
 
    return StatusCode::SUCCESS;
  }
 
  StatusCode BadBatmanAugmentationTool::addBranches(const EventContext& ctx) const
  {
    //Running BadBatmanAugmentationTool
 
    //Set the name of the variable to augment
 
    SG::WriteDecorHandle<xAOD::EventInfo,char> dec_isBadBatman(m_isBadBatmanKey, ctx);
 
    auto eventInfo = SG::makeHandle (m_eventInfo_key, ctx);
    if (!eventInfo.isValid()){
      ATH_MSG_WARNING("Invalid  xAOD::EventInfo datahandle"
                      << m_eventInfo_key.key());
      return StatusCode::FAILURE;
    }
    auto ei = eventInfo.cptr();
 
    auto clusterContainer = SG::makeHandle (m_clusterContainer_key, ctx);
    if(!clusterContainer.isValid()){
      ATH_MSG_WARNING("Invalid  xAOD::CaloClusterContainer datahandle"
                      << m_clusterContainer_key.key());
      return StatusCode::FAILURE;
    }
    auto clusters = clusterContainer.cptr();
 
    //We will now loop over the cluster container counting the number of clusters which pass the criteria
    bool isBatman=false;
    size_t nBatman=0;
    const static SG::AuxElement::ConstAccessor<float>  acc_AVGLARQ("AVG_LAR_Q");
    for ( auto ipart : *clusters ) {
      if (std::fabs(ipart->rawEta())<=2.5) continue;
      if (std::fabs(ipart->rawEta())>=3.2) continue;
      if (ipart->rawE()/cosh(ipart->rawEta())<500.) continue;
      if (acc_AVGLARQ(*ipart)/65535.<=0.2) continue;
      nBatman++;
    }
    //If we found more than 20 clusters then mark the event as bad
    if (nBatman>20) isBatman=true;
    dec_isBadBatman(*ei) = isBatman;
 
    return StatusCode::SUCCESS;
  }
}