PWGLF/SPECTRA/PiKaPr/TestAOD/AliAnalysisTaskSpectraAllChAOD.cxx

   1 /**************************************************************************
   2  * Copyright(c) 1998-2009, ALICE Experiment at CERN, All rights reserved. *
   3  *                                                                        *
   4  * Author: The ALICE Off-line Project.                                    *
   5  * Contributors are mentioned in the code where appropriate.              *
   6  *                                                                        *
   7  * Permission to use, copy, modify and distribute this software and its   *
   8  * documentation strictly for non-commercial purposes is hereby granted   *
   9  * without fee, provided that the above copyright notice appears in all   *
  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 //         AliAnalysisTaskSpectraAllChAOD class
  18 //-----------------------------------------------------------------
  19
  20 #include "TChain.h"
  21 #include "TTree.h"
  22 #include "TLegend.h"
  23 #include "TH1F.h"
  24 #include "TH2F.h"
  25 #include "THnSparse.h"
  26 #include "TCanvas.h"
  27 #include "AliAnalysisTask.h"
  28 #include "AliAODTrack.h"
  29 #include "AliAODMCParticle.h"
  30 #include "AliVParticle.h"
  31 #include "AliAODEvent.h"
  32 #include "AliAODInputHandler.h"
  33 #include "AliAnalysisTaskSpectraAllChAOD.h"
  34 #include "AliAnalysisTaskESDfilter.h"
  35 #include "AliAnalysisDataContainer.h"
  36 #include "AliSpectraAODTrackCuts.h"
  37 #include "AliSpectraAODEventCuts.h"
  38 #include "AliHelperPID.h"
  39 #include "AliPIDCombined.h"
  40 #include "AliCentrality.h"
  41 #include "TProof.h"
  42 #include "AliVEvent.h"
  43 #include "AliStack.h"
  44 #include <TMCProcess.h>
  45
  46 #include <iostream>
  47
  48 using namespace AliHelperPIDNameSpace;
  49 using namespace std;
  50
  51 ClassImp(AliAnalysisTaskSpectraAllChAOD)
  52
  53 //________________________________________________________________________
  54 AliAnalysisTaskSpectraAllChAOD::AliAnalysisTaskSpectraAllChAOD(const char *name) : AliAnalysisTaskSE(name),
  55   fAOD(0x0),
  56   fTrackCuts(0x0),
  57   fEventCuts(0x0),
  58   fHelperPID(0x0),
  59   fIsMC(0),
  60   fDoDoubleCounting(0),
  61   fFillOnlyEvents(0),
  62   fCharge(0),
  63   fVZEROside(0),
  64   fOutput(0x0),
  65   fnCentBins(20),
  66   fnQvecBins(100),
  67   fnNchBins(200),
  68   fIsQvecCalibMode(0),
  69   fQvecUpperLim(100)
  70 {
  71   // Default constructor
  72   DefineInput(0, TChain::Class());
  73   DefineOutput(1, TList::Class());
  74   DefineOutput(2, AliSpectraAODEventCuts::Class());
  75   DefineOutput(3, AliSpectraAODTrackCuts::Class());
  76   DefineOutput(4, AliHelperPID::Class());
  77 }
  78
  79 //________________________________________________________________________
  80 void AliAnalysisTaskSpectraAllChAOD::UserCreateOutputObjects()
  81 {
  82   // create output objects
  83   fOutput=new TList();
  84   fOutput->SetOwner();
  85   fOutput->SetName("fOutput");
  86
  87   if (!fTrackCuts) AliFatal("Track Cuts should be set in the steering macro");
  88   if (!fEventCuts) AliFatal("Event Cuts should be set in the steering macro");
  89   if (!fHelperPID)  AliFatal("HelperPID should be set in the steering macro");
  90
  91   // binning common to all the THn
  92   const Double_t ptBins[] = {0.20,0.30,0.4,0.5,0.6,0.7,0.8,0.9,1.0,1.2,1.4,1.6,1.8,2.0,2.4,2.8,3.2,3.6,4.0,5.0,6.0,7.0,8.0,9.0,10.,12.,15.};
  93   const Int_t nptBins=26;
  94
  95   //dimensions of THnSparse for tracks
  96   const Int_t nvartrk=7;
  97   //                                             pt          cent          Q vec     IDrec      IDgen       isph         y
  98   Int_t    binsHistRealTrk[nvartrk] = {      nptBins, fnCentBins,     fnQvecBins,        4,        3,         2,        2};
  99   Double_t xminHistRealTrk[nvartrk] = {         0.,          0.,              0.,       -.5,      -0.5,      -0.5,    -0.5};
 100   Double_t xmaxHistRealTrk[nvartrk] = {       10.,       100., fQvecUpperLim,      3.5,      2.5,       1.5,     0.5};
 101   THnSparseF* NSparseHistTrk = new THnSparseF("NSparseHistTrk","NSparseHistTrk",nvartrk,binsHistRealTrk,xminHistRealTrk,xmaxHistRealTrk);
 102   NSparseHistTrk->GetAxis(0)->SetTitle("#it{p}_{T,rec}");
 103   NSparseHistTrk->GetAxis(0)->SetName("pT_rec");
 104   NSparseHistTrk->SetBinEdges(0,ptBins);
 105   NSparseHistTrk->GetAxis(1)->SetTitle(Form("%s cent",fEventCuts->GetCentralityMethod().Data()));
 106   NSparseHistTrk->GetAxis(1)->SetName(Form("%s_cent",fEventCuts->GetCentralityMethod().Data()));
 107   NSparseHistTrk->GetAxis(2)->SetTitle("Q vec");
 108   NSparseHistTrk->GetAxis(2)->SetName("Q_vec");
 109   NSparseHistTrk->GetAxis(3)->SetTitle("ID rec");
 110   NSparseHistTrk->GetAxis(3)->SetName("ID_rec");
 111   NSparseHistTrk->GetAxis(4)->SetTitle("ID gen");
 112   NSparseHistTrk->GetAxis(4)->SetName("ID_gen");
 113   NSparseHistTrk->GetAxis(5)->SetTitle("isph");
 114   NSparseHistTrk->GetAxis(5)->SetName("isph");
 115   NSparseHistTrk->GetAxis(6)->SetTitle("y");
 116   NSparseHistTrk->GetAxis(6)->SetName("y");
 117   fOutput->Add(NSparseHistTrk);
 118
 119   //dimensions of THnSparse for stack
 120   const Int_t nvarst=6;
 121   //                                             pt          cent    IDgen        isph        y    etaselected
 122   Int_t    binsHistRealSt[nvarst] = {      nptBins,  fnCentBins,        3,         2,        2,             1};
 123   Double_t xminHistRealSt[nvarst] = {         0.,           0.,      -0.5,      -0.5,    -0.5,            0.5};
 124   Double_t xmaxHistRealSt[nvarst] = {       10.,        100.,      2.5,       1.5,      0.5,           1.5};
 125   THnSparseF* NSparseHistSt = new THnSparseF("NSparseHistSt","NSparseHistSt",nvarst,binsHistRealSt,xminHistRealSt,xmaxHistRealSt);
 126   NSparseHistSt->GetAxis(0)->SetTitle("#it{p}_{T,gen}");
 127   NSparseHistSt->SetBinEdges(0,ptBins);
 128   NSparseHistSt->GetAxis(0)->SetName("pT_rec");
 129   NSparseHistSt->GetAxis(1)->SetTitle(Form("%s cent",fEventCuts->GetCentralityMethod().Data()));
 130   NSparseHistSt->GetAxis(1)->SetName(Form("%s_cent",fEventCuts->GetCentralityMethod().Data()));
 131   NSparseHistSt->GetAxis(2)->SetTitle("ID gen");
 132   NSparseHistSt->GetAxis(2)->SetName("ID_gen");
 133   NSparseHistSt->GetAxis(3)->SetTitle("isph");
 134   NSparseHistSt->GetAxis(3)->SetName("isph");
 135   NSparseHistSt->GetAxis(4)->SetTitle("y");
 136   NSparseHistSt->GetAxis(4)->SetName("y");
 137   NSparseHistSt->GetAxis(5)->SetTitle("etaselected");
 138   NSparseHistSt->GetAxis(5)->SetName("etaselected");
 139   fOutput->Add(NSparseHistSt);
 140
 141   //dimensions of THnSparse for the normalization
 142   const Int_t nvarev=3;
 143   //                                             cent             Q vec                Nch
 144   Int_t    binsHistRealEv[nvarev] = {    fnCentBins,      fnQvecBins,           fnNchBins};
 145   Double_t xminHistRealEv[nvarev] = {           0.,               0.,                   0.};
 146   Double_t xmaxHistRealEv[nvarev] = {       100.,  fQvecUpperLim,               2000.};
 147   THnSparseF* NSparseHistEv = new THnSparseF("NSparseHistEv","NSparseHistEv",nvarev,binsHistRealEv,xminHistRealEv,xmaxHistRealEv);
 148   NSparseHistEv->GetAxis(0)->SetTitle(Form("%s cent",fEventCuts->GetCentralityMethod().Data()));
 149   NSparseHistEv->GetAxis(0)->SetName(Form("%s_cent",fEventCuts->GetCentralityMethod().Data()));
 150   NSparseHistEv->GetAxis(1)->SetTitle("Q vec");
 151   NSparseHistEv->GetAxis(1)->SetName("Q_vec");
 152   NSparseHistEv->GetAxis(2)->SetTitle("N charged");
 153   NSparseHistEv->GetAxis(2)->SetName("N_ch");
 154   fOutput->Add(NSparseHistEv);
 155
 156   PostData(1, fOutput  );
 157   PostData(2, fEventCuts);
 158   PostData(3, fTrackCuts);
 159   PostData(4, fHelperPID);
 160 }
 161
 162 //________________________________________________________________________
 163
 164 void AliAnalysisTaskSpectraAllChAOD::UserExec(Option_t *)
 165 {
 166   //Printf("An event");
 167   // main event loop
 168   fAOD = dynamic_cast<AliAODEvent*>(fInputEvent);
 169   if (!fAOD) {
 170     AliWarning("ERROR: AliAODEvent not available \n");
 171     return;
 172   }
 173
 174   if (strcmp(fAOD->ClassName(), "AliAODEvent"))
 175     {
 176       AliFatal("Not processing AODs");
 177     }
 178
 179   if(!fEventCuts->IsSelected(fAOD,fTrackCuts))return;//event selection
 180
 181   //Default TPC priors
 182   if(fHelperPID->GetPIDType()==kBayes)fHelperPID->GetPIDCombined()->SetDefaultTPCPriors();//FIXME maybe this can go in the UserCreateOutputObject?
 183
 184   Double_t Qvec=0.;//in case of MC we save space in the memory
 185   if(!fIsMC){
 186     if(fIsQvecCalibMode){
 187       if(fVZEROside==0)Qvec=fEventCuts->GetqV0A();
 188       else if (fVZEROside==1)Qvec=fEventCuts->GetqV0C();
 189     }
 190     else Qvec=fEventCuts->GetQvecPercentile(fVZEROside);
 191   }
 192
 193   Double_t Cent=fEventCuts->GetCent();
 194
 195   // First do MC to fill up the MC particle array
 196   TClonesArray *arrayMC = 0;
 197   if (fIsMC)
 198     {
 199       arrayMC = (TClonesArray*) fAOD->GetList()->FindObject(AliAODMCParticle::StdBranchName());
 200       if (!arrayMC) {
 201         AliFatal("Error: MC particles branch not found!\n");
 202       }
 203       Int_t nMC = arrayMC->GetEntries();
 204       for (Int_t iMC = 0; iMC < nMC; iMC++)
 205         {
 206           AliAODMCParticle *partMC = (AliAODMCParticle*) arrayMC->At(iMC);
 207           if(!partMC->Charge()) continue;//Skip neutrals
 208           if(fCharge != 0 && partMC->Charge()*fCharge < 0.) continue;//if fCharge != 0 only select fCharge
 209
 210           //flag to select particle in the same ETA acceptance of the tracks (to be used for the comparison with AllCh)
 211           Double_t etaselected=-1.;
 212           if(partMC->Eta()>=fTrackCuts->GetEtaMin() && partMC->Eta()<=fTrackCuts->GetEtaMax())etaselected=1.;
 213
 214           //pt     cent    IDgen        isph        y
 215           Double_t varSt[6];
 216           varSt[0]=partMC->Pt();
 217           varSt[1]=Cent;
 218           varSt[2]=(Double_t)fHelperPID->GetParticleSpecies(partMC);
 219           varSt[3]=(Double_t)partMC->IsPhysicalPrimary();
 220           varSt[4]=partMC->Y();
 221           varSt[5]=etaselected;
 222           ((THnSparseF*)fOutput->FindObject("NSparseHistSt"))->Fill(varSt);//stack loop
 223
 224           //Printf("a particle");
 225
 226         }
 227     }
 228
 229   //main loop on tracks
 230
 231   Int_t Nch = 0.;
 232
 233   for (Int_t iTracks = 0; iTracks < fAOD->GetNumberOfTracks(); iTracks++) {
 234     AliAODTrack* track = fAOD->GetTrack(iTracks);
 235     if(fCharge != 0 && track->Charge() != fCharge) continue;//if fCharge != 0 only select fCharge
 236     if (!fTrackCuts->IsSelected(track,kTRUE)) continue; //track selection (rapidity selection NOT in the standard cuts)
 237     if(!fFillOnlyEvents){
 238       Int_t IDrec=fHelperPID->GetParticleSpecies(track,kTRUE);//id from detector
 239       Double_t y= track->Y(fHelperPID->GetMass((AliHelperParticleSpecies_t)IDrec));
 240       Int_t IDgen=kSpUndefined;//set if MC
 241       Int_t isph=-999;
 242       //Int_t iswd=-999;
 243
 244       if (arrayMC) {
 245         AliAODMCParticle *partMC = (AliAODMCParticle*) arrayMC->At(TMath::Abs(track->GetLabel()));
 246         if (!partMC) {
 247           AliError("Cannot get MC particle");
 248           continue;
 249         }
 250         IDgen=fHelperPID->GetParticleSpecies(partMC);
 251         isph=partMC->IsPhysicalPrimary();
 252         //iswd=partMC->IsSecondaryFromWeakDecay();//FIXME not working on old productions - removed Apr 8th 2014
 253       }
 254
 255     //pt     cent    Q vec     IDrec     IDgen       isph      y
 256       Double_t varTrk[7];
 257       varTrk[0]=track->Pt();
 258       varTrk[1]=Cent;
 259       varTrk[2]=Qvec;
 260       varTrk[3]=(Double_t)IDrec;
 261       varTrk[4]=(Double_t)IDgen;
 262       varTrk[5]=(Double_t)isph;
 263       varTrk[6]=y;
 264       ((THnSparseF*)fOutput->FindObject("NSparseHistTrk"))->Fill(varTrk);//track loop
 265
 266       //for nsigma PID fill double counting of ID
 267       if(fHelperPID->GetPIDType()<kBayes && fDoDoubleCounting){//only nsigma
 268         Bool_t *HasDC;
 269         HasDC=fHelperPID->GetDoubleCounting(track,kTRUE);//get the array with double counting
 270         for(Int_t ipart=0;ipart<kNSpecies;ipart++){
 271           if(HasDC[ipart]==kTRUE){
 272             varTrk[3]=(Double_t)ipart;
 273             ((THnSparseF*)fOutput->FindObject("NSparseHistTrk"))->Fill(varTrk);//track loop
 274           }
 275         }
 276       }
 277
 278       //fill all charged (3)
 279       varTrk[3]=3.;
 280       varTrk[4]=3.;
 281       ((THnSparseF*)fOutput->FindObject("NSparseHistTrk"))->Fill(varTrk);//track loop
 282     }//end if fFillOnlyEvents
 283
 284     //Printf("a track");
 285
 286     Nch++;
 287   } // end loop on tracks
 288
 289   Double_t varEv[3];
 290   varEv[0]=Cent;
 291   varEv[1]=Qvec;
 292   varEv[2]=Nch;
 293   ((THnSparseF*)fOutput->FindObject("NSparseHistEv"))->Fill(varEv);//event loop
 294
 295   PostData(1, fOutput  );
 296   PostData(2, fEventCuts);
 297   PostData(3, fTrackCuts);
 298   PostData(4, fHelperPID);
 299 }
 300
 301 //_________________________________________________________________
 302 void   AliAnalysisTaskSpectraAllChAOD::Terminate(Option_t *)
 303 {
 304   // Terminate
 305 }