SVDMaxStripTTreeModule.cc

/**************************************************************************
 * BASF2 (Belle Analysis Framework 2)                                     *
 * Copyright(C) 2013 - Belle II Collaboration                             *
 *                                                                        *
 * Author: The Belle II Collaboration                                     *
 * Contributors: Giulia Casarosa                                          *
 *                                                                        *
 * The module is used to create a TTree to study the number of strips     *
 * fired per event per APV chip.                                          *
 *                                                                        *
 * This software is provided "as is" without any warranty.                *
 **************************************************************************/
 
#include <svd/modules/svdPerformance/SVDMaxStripTTreeModule.h>
#include <hlt/softwaretrigger/core/FinalTriggerDecisionCalculator.h>
 
#include <vxd/dataobjects/VxdID.h>
#include <vxd/geometry/GeoCache.h>
 
using namespace Belle2;
using namespace std;
using namespace SoftwareTrigger;
 
REG_MODULE(SVDMaxStripTTree)
 
SVDMaxStripTTreeModule::SVDMaxStripTTreeModule() : Module()
{
  setDescription("The module is used to create a TTree to study the number of strips per APV per event.");
  addParam("outputFileName", m_rootFileName, "Name of output root file.", std::string("SVDMaxStripTTree.root"));
  addParam("ShaperDigits", m_shapersStoreArrayName, "StoreArray name of the input ShaperDigits.",
           m_shapersStoreArrayName);
  addParam("skipHLTRejectedEvents", m_skipRejectedEvents, "If TRUE skip events rejected by HLT", bool(true));
}
 
void SVDMaxStripTTreeModule::initialize()
{
  m_shapers.isRequired(m_shapersStoreArrayName);
 
  m_rootFilePtr = new TFile(m_rootFileName.c_str(), "RECREATE");
 
  //Tree for SVD u and v strips
  m_t = new TTree("tree", "Tree for SVD u/v-strips");
  m_t->Branch("evt", &m_event, "evt/i");
  m_t->Branch("svdLayer", &m_svdLayer, "svdLayer/i");
  m_t->Branch("svdLadder", &m_svdLadder, "svdLadder/i");
  m_t->Branch("svdSensor", &m_svdSensor, "svdSensor/i");
  m_t->Branch("svdSide", &m_svdSide, "svdSide/i");
  m_t->Branch("svdChip", &m_svdChip, "svdChip/i");
  m_t->Branch("svdHits", &m_svdHits, "svdHits/i");
 
  m_event = 0;
}
 
void SVDMaxStripTTreeModule::beginRun()
{
 
  TH1F hHits("nHits_L@layerL@ladderS@sensor@view@apv",
             "Number of Hits per Event in @layer.@ladder.@sensor chip @apv on the @view/@side side",
             2, -0.5 , 1.5);
 
  m_hHits = new SVDAPVHistograms<TH1F>(hHits);
 
}
 
 
void SVDMaxStripTTreeModule::event()
{
 
  if (m_skipRejectedEvents && (m_resultStoreObjectPointer.isValid())) {
    const bool eventAccepted = FinalTriggerDecisionCalculator::getFinalTriggerDecision(*m_resultStoreObjectPointer);
    if (!eventAccepted) return;
  }
 
  //count the number of strips per APV in the event
  for (const auto& shaper : m_shapers)
    m_hHits->fill(shaper.getSensorID(), shaper.isUStrip(), shaper.getCellID() / 128, 0);
 
  //loop on geometry and fill the tree for this event
  VXD::GeoCache& geoCache = VXD::GeoCache::getInstance();
 
  for (auto layer : geoCache.getLayers(VXD::SensorInfoBase::SVD))
    for (auto ladder : geoCache.getLadders(layer))
      for (Belle2::VxdID sensor :  geoCache.getSensors(ladder))
        for (int view = SVDAPVHistograms<TH1F>::VIndex ; view < SVDAPVHistograms<TH1F>::UIndex + 1; view++)
          for (int apv = 0; apv < 6; apv ++) {
            m_svdLayer = sensor.getLayerNumber();
            m_svdLadder = sensor.getLadderNumber();
            m_svdSensor = sensor.getSensorNumber();
            m_svdSide = view;
            m_svdChip = apv;
            m_svdHits = (m_hHits->getHistogram(sensor, view, apv))->GetEntries();
            m_t->Fill();
 
            //reset the histogram used as counters
            (m_hHits->getHistogram(sensor, view, apv))->Reset();
 
          }
 
  m_event++;
}
 
 
void SVDMaxStripTTreeModule::terminate()
{
 
  if (m_rootFilePtr != NULL) {
    m_rootFilePtr->cd();
    m_t->Write();
    m_rootFilePtr->Close();
  }
}