PWG1/TRD/AliTRDv0Monitor.cxx

   1 /**************************************************************************
   2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
   3 *                                                                        *
   4 * Author: The ALICE Off-line Project.                                    *
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   6 *                                                                        *
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   8 * documentation strictly for non-commercialf purposes is hereby granted   *
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  10 * copies and that both the copyright notice and this permission notice   *
  11 * appear in the supporting documentation. The authors make no claims     *
  12 * about the suitability of this software for any purpose. It is          *
  13 * provided "as is" without express or implied warranty.                  *
  14 **************************************************************************/
  15
  16 /////////////////////////////////////////////////////
  17 //
  18 //  Monitor V0 for TRD
  19 //
  20 //  Authors:
  21 //  Markus Heide <mheide@uni-muenster.de>
  22 //////////////////////////////////////////////////////
  23
  24 #include "TObjArray.h"
  25 #include "TH2.h"
  26 #include "TH2F.h"
  27 #include "TH1I.h"
  28 #include "TCanvas.h"
  29
  30 #include "AliLog.h"
  31 #include "AliESDtrack.h"
  32 #include "AliPID.h"
  33 #include "AliTRDv0Monitor.h"
  34 #include "info/AliTRDv0Info.h"
  35
  36
  37 ClassImp(AliTRDv0Monitor)
  38
  39 //________________________________________________________________________
  40 AliTRDv0Monitor::AliTRDv0Monitor()
  41   :AliTRDrecoTask()
  42   ,fhQualityReductions(NULL)
  43   ,fV0s(NULL)
  44   ,fData(NULL)
  45   ,fInfo(NULL)
  46   ,fP(-1.)
  47 {
  48   //
  49   // Default constructor
  50   //
  51   SetNameTitle("TRDv0Monitor", "V0 Monitor for TRD PID");
  52 }
  53
  54 //________________________________________________________________________
  55 AliTRDv0Monitor::AliTRDv0Monitor(const char *name)
  56   :AliTRDrecoTask(name, "V0 Monitor for TRD PID")
  57   ,fhQualityReductions(NULL)
  58   ,fV0s(NULL)
  59   ,fData(NULL)
  60   ,fInfo(NULL)
  61   ,fP(-1.)
  62 {
  63   //
  64   // Default constructor
  65   //
  66   DefineInput(2, TObjArray::Class()); // v0 list
  67   DefineInput(3, TObjArray::Class()); // pid info list
  68 }
  69
  70
  71
  72 // //____________________________________________________________________
  73 // void AliTRDv0Monitor::MakeSummary(){//makes a summary with potentially nice reference figures
  74 //   //TCanvas *cOut = new TCanvas("v0MonitorSummary1", "Summary 1 for task V0Monitor", 1024, 768);
  75 //   //cOut->cd();
  76 //   //GetRefFigure(4);
  77 //   //cOut->SaveAs("V0MonitorSummary.gif");
  78 //
  79 //   //cOut = new TCanvas("v0MonitorSummary2","Summary 2 for task V0Monitor", 1024, 768);
  80 //   //cOut->cd();
  81 //   //GetRefFigure(5);
  82 //   //cOut->SaveAs("V0MonitorSummary2.gif");
  83 // }
  84
  85 //________________________________________________________________________
  86 Bool_t AliTRDv0Monitor::GetRefFigure(Int_t /*ifig*/)
  87 {
  88   //creating reference figures
  89
  90   AliInfo("Implementation on going ...");
  91   return kTRUE;
  92 }
  93
  94 //________________________________________________________________________
  95 TObjArray* AliTRDv0Monitor::Histos()
  96 {
  97   // Create histograms
  98   // Called once
  99   if(fContainer) return fContainer;
 100
 101   fContainer = new TObjArray(kNPlots);
 102   fContainer->SetName("V0Monitoring");
 103
 104   const char *samplename[AliPID::kSPECIES] = {"electrons","muons","pions","kaons","protons"};
 105   const char *decayname[AliTRDv0Info::kNDecays] = {"gamma","K0s","Lambda","AntiLambda"};
 106   const char *detectorname[kNDets] = {"ITS","TPC","TOF"};
 107
 108   fhQualityReductions = new TH1I(Form("fhQualityReductions"),Form("Number of tracks cut out by different quality cut steps"),11,-9,2);
 109   fContainer->Add(fhQualityReductions);
 110
 111   for(Int_t ipart = 0;ipart < AliPID::kSPECIES; ipart++){
 112     fhCutReductions[ipart] = new TH1I(Form("fhCutReductions_%s",samplename[ipart]),Form("Number of tracks cut out by different cut steps for %s",samplename[ipart]),19,-17,2);
 113     fContainer->Add(fhCutReductions[ipart]);
 114     for(Int_t idetector = 0; idetector < kNDets; idetector++){
 115       fhDetPID[idetector][ipart] = new TH2F(Form("fhDetector_%s_%s",detectorname[idetector],samplename[ipart]),Form("%s Likelihood for %s vs. momentum",detectorname[idetector], samplename[ipart]),100,0.,10.,100, 0., 1.);
 116
 117       fContainer->Add(fhDetPID[idetector][ipart]);
 118     }
 119     fhComPID[ipart] = new TH2F(Form("fhComPID_%s",samplename[ipart]),Form("Combined TPC/TOF PID: Likelihood for %s",samplename[ipart]),100,0.,10.,100,0.,1.);
 120
 121     fContainer->Add(fhComPID[ipart]);
 122
 123     for(Int_t cutstep = 0; cutstep < kNCutSteps; cutstep++){
 124       fhTPCdEdx[ipart][cutstep] = new TH2F(Form("fhTPCdEdx_%s_[%d]",samplename[ipart],cutstep),Form("TPC dE/dx for %s [%d]",samplename[ipart],cutstep),100,0.,10.,300,0.,300.);
 125
 126       fContainer->Add(fhTPCdEdx[ipart][cutstep]);
 127     }
 128   }
 129
 130   for(Int_t iDecay = 0; iDecay < AliTRDv0Info::kNDecays; iDecay++){
 131     for(Int_t cutstep =0; cutstep < kNCutSteps; cutstep++){
 132       fhV0Chi2ndf[iDecay][cutstep] =  new TH2F(Form("fhV0Chi2ndf_%s_[%d]",decayname[iDecay],cutstep),Form("Chi2/NDF vs. momentum"),100,0.,10.,500, 0., 500.);
 133
 134       fContainer->Add(fhV0Chi2ndf[iDecay][cutstep]);
 135
 136       fhPsiPair[iDecay][cutstep] =  new TH2F(Form("fhV0PsiPair_%s_[%d]",decayname[iDecay],cutstep),Form("Psi_pair vs. momentum"),100,0.,10.,200, 0., 1.6);
 137
 138       fContainer->Add(fhPsiPair[iDecay][cutstep]);
 139
 140       fhPointAngle[iDecay][cutstep] =  new TH2F(Form("fhPointAngle_%s_[%d]",decayname[iDecay],cutstep),Form("Pointing Angle vs. momentum"),100,0.,10.,500, 0., 1.6);
 141       fContainer->Add(fhPointAngle[iDecay][cutstep]);
 142
 143       fhDCA[iDecay][cutstep] =  new TH2F(Form("fhDCA_%s_[%d]",decayname[iDecay],cutstep),Form("V0 Daughter DCA vs. momentum"),100,0.,10.,500, 0., 1.);
 144
 145       fContainer->Add(fhDCA[iDecay][cutstep]);
 146
 147       fhOpenAngle[iDecay][cutstep] =  new TH2F(Form("fhOpenAngle_%s_[%d]",decayname[iDecay],cutstep),Form("Opening Angle vs. momentum"),100,0.,10.,500, 0., 1.6);
 148
 149       fContainer->Add(fhOpenAngle[iDecay][cutstep]);
 150
 151       fhRadius[iDecay][cutstep] =  new TH2F(Form("fhRadius_%s_[%d]",decayname[iDecay],cutstep),Form("V0 Generation Radius vs. momentum"),100,0.,10.,500, 0., 150.);
 152
 153       fContainer->Add(fhRadius[iDecay][cutstep]);
 154     }
 155
 156     fhInvMass[iDecay] =  new TH2F(Form("fhInvMass_%s",decayname[iDecay]),Form("Invariant Mass vs. momentum"),100,0.,10.,500, 0., 2.);
 157
 158     fContainer->Add(fhInvMass[iDecay]);
 159   }
 160
 161 /*TH1F *hV0mcPID[AliPID::kSPECIES][AliPID::kSPECIES];
 162   Int_t nPBins = 200;
 163
 164
 165
 166   for(Int_t iSpecies = 0; iSpecies < AliPID::kSPECIES; iSpecies++){
 167   for(Int_t iSample = 0; iSample < AliPID::kSPECIES; iSample++){
 168
 169   fhV0mcPID[iSample][iSpecies] = new TH1F(Form("fhV0mcPID_%s_is_%s",name[iSample],name[iSpecies]),Form("%s contained in %s sample",name[iSpecies],name[iSample]), nPBins, 0.2, 13.);
 170   }
 171   }*/
 172
 173   return fContainer;
 174 }
 175
 176
 177 //________________________________________________________________________
 178 void AliTRDv0Monitor::UserExec(Option_t *)
 179 {
 180   // Main loop
 181   // Called for each event
 182   if(!(fTracks = dynamic_cast<TObjArray*>(GetInputData(1)))) return;
 183   if(!(fV0s    = dynamic_cast<TObjArray*>(GetInputData(2)))) return;
 184   if(!(fInfo   = dynamic_cast<TObjArray*>(GetInputData(3)))) return;
 185
 186
 187   AliTRDtrackInfo     *track = NULL;
 188   AliTRDv0Info *v0(NULL);
 189
 190   for(Int_t itrk=0; itrk<fTracks->GetEntriesFast(); itrk++){
 191     track = (AliTRDtrackInfo*)fTracks->UncheckedAt(itrk);
 192     for(Int_t iv(0); iv<fV0s->GetEntriesFast(); iv++){
 193       if(!(v0 = (AliTRDv0Info*)fV0s->At(iv))) continue;
 194       if(!v0->HasTrack(track)) continue;
 195       ULong_t status = track->GetStatus();
 196       if(!(status&AliESDtrack::kTRDpid)) continue;
 197
 198       fhQualityReductions->Fill(v0->GetQuality());//fills integer codes for tracks cut out by track/V0 quality cuts
 199
 200       if(!(v0->GetQuality() == 1)) continue;
 201
 202       for(Int_t part = 0; part < AliPID::kSPECIES; part++){
 203         fhCutReductions[part]->Fill(v0->GetPID(part,track));//fill in numbers of tracks eliminated by different PID cuts
 204       }
 205
 206
 207       for(Int_t idecay(0), part(-1); idecay <  AliTRDv0Info::kNDecays; idecay++){//loop over decay types considered for reference data
 208         if(idecay ==  AliTRDv0Info::kLambda){ //protons and pions from Lambda
 209           part = AliPID::kProton;
 210         } else if(idecay == AliTRDv0Info::kAntiLambda) { //antiprotons and pions from Anti-Lambda
 211           part = AliPID::kProton;
 212         } else if(idecay ==   AliTRDv0Info::kK0s) {//pions from K0s
 213           part = AliPID::kPion;
 214         } else if(idecay ==  AliTRDv0Info::kGamma) {//electrons from conversions
 215           part = AliPID::kElectron;
 216         }
 217
 218         //fill histograms with track/V0 quality cuts only
 219         fhPsiPair[idecay][0]->Fill(v0->GetV0Momentum(),v0->GetPsiPair());//Angle between daughter momentum plane and plane perpendicular to magnetic field
 220         fhInvMass[idecay]->Fill(v0->GetV0Momentum(),v0->GetInvMass(idecay));//Invariant mass
 221         fhPointAngle[idecay][0]->Fill(v0->GetV0Momentum(),v0->GetPointingAngle());// = TMath::ACos(esdv0->GetV0CosineOfPointingAngle()); // Cosine of pointing angle
 222         fhOpenAngle[idecay][0]->Fill(v0->GetV0Momentum(),v0->GetOpenAngle());// opening angle between daughters
 223         fhDCA[idecay][0]->Fill(v0->GetV0Momentum(),v0->GetDCA());// Distance of closest approach of daughter tracks
 224         fhV0Chi2ndf[idecay][0]->Fill(v0->GetV0Momentum(),v0->GetChi2ndf(idecay));//Kalman Filter Chi2/NDF
 225         fhRadius[idecay][0]->Fill(v0->GetV0Momentum(),v0->GetRadius());//distance of decay/conversion from primary vertex in x-y plane
 226
 227         if(v0->HasTrack(track) == -1){
 228           fhTPCdEdx[part][0]->Fill(v0->GetV0Daughter(-1)->P(),v0->GetTPCdEdx(AliTRDv0Info::kNeg));//TPC dE/dx for negative track
 229         } else if(v0->HasTrack(track) == 1){
 230           fhTPCdEdx[part][0]->Fill(v0->GetV0Daughter(1)->P(),v0->GetTPCdEdx(AliTRDv0Info::kPos));//TPC dE/dx for positive track
 231         }
 232
 233         //fill histograms after invariant mass cuts
 234         if((v0->GetInvMass(idecay) < v0->GetUpInvMass(idecay,0))&&(v0->GetInvMass(idecay)> v0->GetDownInvMass(idecay))){
 235           fhV0Chi2ndf[idecay][1]->Fill(v0->GetV0Momentum(),v0->GetChi2ndf(idecay));
 236           fhPsiPair[idecay][1]->Fill(v0->GetV0Momentum(),v0->GetPsiPair());
 237           fhPointAngle[idecay][1]->Fill(v0->GetV0Momentum(),v0->GetPointingAngle());
 238           fhOpenAngle[idecay][1]->Fill(v0->GetV0Momentum(),v0->GetOpenAngle());
 239           fhDCA[idecay][1]->Fill(v0->GetV0Momentum(),v0->GetDCA());
 240           fhRadius[idecay][1]->Fill(v0->GetV0Momentum(),v0->GetRadius());
 241           if(v0->HasTrack(track) == -1)
 242             fhTPCdEdx[part][1]->Fill(v0->GetV0Daughter(-1)->P(),v0->GetTPCdEdx(AliTRDv0Info::kNeg));
 243           else if(v0->HasTrack(track) == 1)
 244             fhTPCdEdx[part][1]->Fill(v0->GetV0Daughter(1)->P(),v0->GetTPCdEdx(AliTRDv0Info::kPos));
 245
 246         }
 247
 248         //fill histograms after all reference selection cuts
 249         if(v0->GetPID(part,track)==1){
 250           fhV0Chi2ndf[idecay][2]->Fill(v0->GetV0Momentum(),v0->GetChi2ndf(idecay));
 251           fhPsiPair[idecay][2]->Fill(v0->GetV0Momentum(),v0->GetPsiPair());
 252           fhPointAngle[idecay][2]->Fill(v0->GetV0Momentum(),v0->GetPointingAngle());
 253           fhOpenAngle[idecay][2]->Fill(v0->GetV0Momentum(),v0->GetOpenAngle());
 254           fhDCA[idecay][2]->Fill(v0->GetV0Momentum(),v0->GetDCA());
 255           fhRadius[idecay][2]->Fill(v0->GetV0Momentum(),v0->GetRadius());
 256           if(v0->HasTrack(track) == -1)
 257             fhTPCdEdx[part][2]->Fill(v0->GetV0Daughter(-1)->P(),v0->GetTPCdEdx(AliTRDv0Info::kNeg));
 258           else if(v0->HasTrack(track) == 1)
 259             fhTPCdEdx[part][2]->Fill(v0->GetV0Daughter(1)->P(),v0->GetTPCdEdx(AliTRDv0Info::kPos));
 260         }
 261       }
 262     }
 263   }
 264 }