TPC QC: Add getter for occupancy to Cluster class (#14251)

Feat: add getOccupancy method to Cluster class

Author: ariedel-cern

Detectors/TPC/qc/include/TPCQC/Clusters.h

@@ -17,10 +17,10 @@
 #ifndef AliceO2_TPC_CLUSTERS_H
 #define AliceO2_TPC_CLUSTERS_H
 
-//root includes
+// root includes
 #include "TCanvas.h"
 
-//o2 includes
+// o2 includes
 #include "TPCBase/CalDet.h"
 #include "TPCBase/Sector.h"
 #include "DataFormatsTPC/Defs.h"
@@ -75,6 +75,8 @@ class Clusters
   CalPad& getSigmaPad() { return mSigmaPad; }
   CalPad& getTimeBin() { return mTimeBin; }
 
+  CalPad getOccupancy(int nHBFPerTF = 32);
+
   void endTF() { ++mProcessedTFs; }
 
   size_t getProcessedTFs() { return mProcessedTFs; }

Detectors/TPC/qc/src/Clusters.cxx

@@ -22,8 +22,10 @@
 #include "TPCBase/ROC.h"
 #include "TPCBase/CRU.h"
 #include "TPCBase/Mapper.h"
+#include "TPCBase/ParameterElectronics.h"
 #include "DataFormatsTPC/ClusterNative.h"
 #include "DataFormatsTPC/KrCluster.h"
+#include "CommonConstants/LHCConstants.h"
 
 ClassImp(o2::tpc::qc::Clusters);
 
@@ -152,6 +154,13 @@ void Clusters::reset()
   mProcessedTFs = 0;
 }
 
+//______________________________________________________________________________
+o2::tpc::CalPad Clusters::getOccupancy(int nHBFPerTF)
+{
+  o2::tpc::CalPad occupancy = mNClusters;
+  occupancy /= float(mProcessedTFs * (o2::constants::lhc::LHCMaxBunches * nHBFPerTF) / float(o2::tpc::ParameterElectronics::TIMEBININBC));
+  return occupancy;
+}
 //______________________________________________________________________________
 void Clusters::merge(Clusters& clusters)
 {