PWGLF/SPECTRA/PiKaPr/TestAOD/AliAnalysisTaskSpectraAllChAOD.cxx

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  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   fIsAOD160(1),
  71   fnDCABins(60),
  72   fDCAmin(-3),
  73   fDCAmax(3),
  74   fDCAzCut(999999.)
  75 {
  76   // Default constructor
  77   DefineInput(0, TChain::Class());
  78   DefineOutput(1, TList::Class());
  79   DefineOutput(2, AliSpectraAODEventCuts::Class());
  80   DefineOutput(3, AliSpectraAODTrackCuts::Class());
  81   DefineOutput(4, AliHelperPID::Class());
  82 }
  83
  84 //________________________________________________________________________
  85 void AliAnalysisTaskSpectraAllChAOD::UserCreateOutputObjects()
  86 {
  87   // create output objects
  88   fOutput=new TList();
  89   fOutput->SetOwner();
  90   fOutput->SetName("fOutput");
  91
  92   if (!fTrackCuts) AliFatal("Track Cuts should be set in the steering macro");
  93   if (!fEventCuts) AliFatal("Event Cuts should be set in the steering macro");
  94   if (!fHelperPID)  AliFatal("HelperPID should be set in the steering macro");
  95
  96   // binning common to all the THn
  97   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.,20.,25.,30.,35.,40.,50.,75.,100.};
  98   const Int_t nptBins=34;
  99   //const Double_t ptBins[] = {0.20,0.25,0.30,0.35,0.4,0.45,0.5,0.55,0.6,0.65,0.7,0.75,0.8,0.85,0.9,0.95,1.0,1.1,1.2,1.3,1.4,1.6,1.8,2.0,2.4,2.8,3.2,3.6,4.0,5.0,6.0,7.0,8.0,9.0,10.,12.,15.,20.,25.,30.,35.,40.,50.,75.,100.};
 100   //const Int_t nptBins=44;
 101
 102   //dimensions of THnSparse for tracks
 103   const Int_t nvartrk=8;
 104   //                                             pt          cent          Q vec       IDrec          IDgen        isph         y             DCA
 105   Int_t    binsHistRealTrk[nvartrk] = {      nptBins, fnCentBins,     fnQvecBins,        4,             3,          3,        2,        fnDCABins};
 106   Double_t xminHistRealTrk[nvartrk] = {         0.,          0.,              0.,       -.5,          -0.5,        0.5,      -0.5,          fDCAmin};
 107   Double_t xmaxHistRealTrk[nvartrk] = {       10.,       100.,     fQvecUpperLim,       3.5,      2.5,        3.5,      0.5,         fDCAmax};
 108   THnSparseF* NSparseHistTrk = new THnSparseF("NSparseHistTrk","NSparseHistTrk",nvartrk,binsHistRealTrk,xminHistRealTrk,xmaxHistRealTrk);
 109   NSparseHistTrk->GetAxis(0)->SetTitle("#it{p}_{T,rec}");
 110   NSparseHistTrk->GetAxis(0)->SetName("pT_rec");
 111   NSparseHistTrk->SetBinEdges(0,ptBins);
 112   NSparseHistTrk->GetAxis(1)->SetTitle(Form("%s cent",fEventCuts->GetCentralityMethod().Data()));
 113   NSparseHistTrk->GetAxis(1)->SetName(Form("%s_cent",fEventCuts->GetCentralityMethod().Data()));
 114   NSparseHistTrk->GetAxis(2)->SetTitle("Q vec");
 115   NSparseHistTrk->GetAxis(2)->SetName("Q_vec");
 116   NSparseHistTrk->GetAxis(3)->SetTitle("ID rec");
 117   NSparseHistTrk->GetAxis(3)->SetName("ID_rec");
 118   NSparseHistTrk->GetAxis(4)->SetTitle("ID gen");
 119   NSparseHistTrk->GetAxis(4)->SetName("ID_gen");
 120   NSparseHistTrk->GetAxis(5)->SetTitle("isph");
 121   NSparseHistTrk->GetAxis(5)->SetName("isph");
 122   NSparseHistTrk->GetAxis(6)->SetTitle("y");
 123   NSparseHistTrk->GetAxis(6)->SetName("y");
 124   NSparseHistTrk->GetAxis(7)->SetTitle("dca");
 125   NSparseHistTrk->GetAxis(7)->SetName("dca");
 126   fOutput->Add(NSparseHistTrk);
 127
 128   //dimensions of THnSparse for stack
 129   const Int_t nvarst=6;
 130   //                                             pt          cent    IDgen        isph        y    etaselected
 131   Int_t    binsHistRealSt[nvarst] = {      nptBins,  fnCentBins,        3,         2,        2,             1};
 132   Double_t xminHistRealSt[nvarst] = {         0.,           0.,      -0.5,      -0.5,    -0.5,            0.5};
 133   Double_t xmaxHistRealSt[nvarst] = {       10.,        100.,      2.5,       1.5,      0.5,           1.5};
 134   THnSparseF* NSparseHistSt = new THnSparseF("NSparseHistSt","NSparseHistSt",nvarst,binsHistRealSt,xminHistRealSt,xmaxHistRealSt);
 135   NSparseHistSt->GetAxis(0)->SetTitle("#it{p}_{T,gen}");
 136   NSparseHistSt->SetBinEdges(0,ptBins);
 137   NSparseHistSt->GetAxis(0)->SetName("pT_rec");
 138   NSparseHistSt->GetAxis(1)->SetTitle(Form("%s cent",fEventCuts->GetCentralityMethod().Data()));
 139   NSparseHistSt->GetAxis(1)->SetName(Form("%s_cent",fEventCuts->GetCentralityMethod().Data()));
 140   NSparseHistSt->GetAxis(2)->SetTitle("ID gen");
 141   NSparseHistSt->GetAxis(2)->SetName("ID_gen");
 142   NSparseHistSt->GetAxis(3)->SetTitle("isph");
 143   NSparseHistSt->GetAxis(3)->SetName("isph");
 144   NSparseHistSt->GetAxis(4)->SetTitle("y");
 145   NSparseHistSt->GetAxis(4)->SetName("y");
 146   NSparseHistSt->GetAxis(5)->SetTitle("etaselected");
 147   NSparseHistSt->GetAxis(5)->SetName("etaselected");
 148   fOutput->Add(NSparseHistSt);
 149
 150   //dimensions of THnSparse for the normalization
 151   const Int_t nvarev=3;
 152   //                                             cent             Q vec                Nch
 153   Int_t    binsHistRealEv[nvarev] = {    fnCentBins,      fnQvecBins,           fnNchBins};
 154   Double_t xminHistRealEv[nvarev] = {           0.,               0.,                   0.};
 155   Double_t xmaxHistRealEv[nvarev] = {       100.,  fQvecUpperLim,               2000.};
 156   THnSparseF* NSparseHistEv = new THnSparseF("NSparseHistEv","NSparseHistEv",nvarev,binsHistRealEv,xminHistRealEv,xmaxHistRealEv);
 157   NSparseHistEv->GetAxis(0)->SetTitle(Form("%s cent",fEventCuts->GetCentralityMethod().Data()));
 158   NSparseHistEv->GetAxis(0)->SetName(Form("%s_cent",fEventCuts->GetCentralityMethod().Data()));
 159   NSparseHistEv->GetAxis(1)->SetTitle("Q vec");
 160   NSparseHistEv->GetAxis(1)->SetName("Q_vec");
 161   NSparseHistEv->GetAxis(2)->SetTitle("N charged");
 162   NSparseHistEv->GetAxis(2)->SetName("N_ch");
 163   fOutput->Add(NSparseHistEv);
 164
 165   PostData(1, fOutput  );
 166   PostData(2, fEventCuts);
 167   PostData(3, fTrackCuts);
 168   PostData(4, fHelperPID);
 169 }
 170
 171 //________________________________________________________________________
 172
 173 void AliAnalysisTaskSpectraAllChAOD::UserExec(Option_t *)
 174 {
 175   //Printf("An event");
 176   // main event loop
 177   fAOD = dynamic_cast<AliAODEvent*>(fInputEvent);
 178   if (!fAOD) {
 179     AliWarning("ERROR: AliAODEvent not available \n");
 180     return;
 181   }
 182
 183   if (strcmp(fAOD->ClassName(), "AliAODEvent"))
 184     {
 185       AliFatal("Not processing AODs");
 186     }
 187
 188   if(!fEventCuts->IsSelected(fAOD,fTrackCuts))return;//event selection
 189
 190   //Default TPC priors
 191   //if(fHelperPID->GetPIDType()==kBayes)fHelperPID->GetPIDCombined()->SetDefaultTPCPriors();//FIXME maybe this can go in the UserCreateOutputObject?
 192
 193   Double_t Qvec=0.;//in case of MC we save space in the memory
 194   if(!fIsMC){
 195     if(fIsQvecCalibMode){
 196       if(fVZEROside==0)Qvec=fEventCuts->GetqV0A();
 197       else if (fVZEROside==1)Qvec=fEventCuts->GetqV0C();
 198     }
 199     else Qvec=fEventCuts->GetQvecPercentile(fVZEROside);
 200   }
 201
 202   Double_t Cent=fEventCuts->GetCent();
 203
 204   // First do MC to fill up the MC particle array
 205   TClonesArray *arrayMC = 0;
 206   if (fIsMC)
 207     {
 208       arrayMC = (TClonesArray*) fAOD->GetList()->FindObject(AliAODMCParticle::StdBranchName());
 209       if (!arrayMC) {
 210         AliFatal("Error: MC particles branch not found!\n");
 211       }
 212       Int_t nMC = arrayMC->GetEntries();
 213       for (Int_t iMC = 0; iMC < nMC; iMC++)
 214         {
 215           AliAODMCParticle *partMC = (AliAODMCParticle*) arrayMC->At(iMC);
 216           if(!partMC->Charge()) continue;//Skip neutrals
 217           if(fCharge != 0 && partMC->Charge()*fCharge < 0.) continue;//if fCharge != 0 only select fCharge
 218
 219           //flag to select particle in the same ETA acceptance of the tracks (to be used for the comparison with AllCh)
 220           Double_t etaselected=-1.;
 221           if(partMC->Eta()>=fTrackCuts->GetEtaMin() && partMC->Eta()<=fTrackCuts->GetEtaMax())etaselected=1.;
 222
 223           //pt     cent    IDgen        isph        y
 224           Double_t varSt[6];
 225           varSt[0]=partMC->Pt();
 226           varSt[1]=Cent;
 227           varSt[2]=(Double_t)fHelperPID->GetParticleSpecies(partMC);
 228           varSt[3]=(Double_t)partMC->IsPhysicalPrimary();
 229           varSt[4]=partMC->Y();
 230           varSt[5]=etaselected;
 231           ((THnSparseF*)fOutput->FindObject("NSparseHistSt"))->Fill(varSt);//stack loop
 232
 233           //Printf("a particle");
 234
 235         }
 236     }
 237
 238   //main loop on tracks
 239
 240   Int_t Nch = 0.;
 241
 242   for (Int_t iTracks = 0; iTracks < fAOD->GetNumberOfTracks(); iTracks++) {
 243     AliAODTrack* track = fAOD->GetTrack(iTracks);
 244     if(fCharge != 0 && track->Charge() != fCharge) continue;//if fCharge != 0 only select fCharge
 245     if (!fTrackCuts->IsSelected(track,kTRUE)) continue; //track selection (rapidity selection NOT in the standard cuts)
 246     if(!fFillOnlyEvents){
 247       Int_t IDrec=fHelperPID->GetParticleSpecies(track,kTRUE);//id from detector
 248       Double_t y= track->Y(fHelperPID->GetMass((AliHelperParticleSpecies_t)IDrec));
 249       Int_t IDgen=kSpUndefined;//set if MC
 250       Int_t isph=-999;
 251 //       Int_t iswd=-999;
 252
 253       if (arrayMC) {
 254         AliAODMCParticle *partMC = (AliAODMCParticle*) arrayMC->At(TMath::Abs(track->GetLabel()));
 255         if (!partMC) {
 256           AliError("Cannot get MC particle");
 257           continue;
 258         }
 259         IDgen=fHelperPID->GetParticleSpecies(partMC);
 260         isph=partMC->IsPhysicalPrimary();
 261         //iswd=partMC->IsSecondaryFromWeakDecay();//FIXME not working on old productions - removed Apr 8th 2014
 262
 263         if(fIsAOD160){// enabled for new ADO160 only
 264           if(partMC->IsSecondaryFromWeakDecay()) isph=2.;
 265           if(partMC->IsSecondaryFromMaterial()) isph=3.;
 266
 267         }
 268       }
 269
 270       /*** DCA ***/
 271       Double_t dcaxy = -999.;
 272       Double_t dcaz = -999.;
 273
 274       Double_t p[2];
 275       if(GetDCA(track,p)){ dcaxy=p[0]; dcaz=p[1];}
 276
 277       if(dcaz >= fDCAzCut) continue;
 278
 279     //pt     cent    Q vec     IDrec     IDgen       isph      y
 280       Double_t varTrk[8];
 281       varTrk[0]=track->Pt();
 282       varTrk[1]=Cent;
 283       varTrk[2]=Qvec;
 284       varTrk[3]=(Double_t)IDrec;
 285       varTrk[4]=(Double_t)IDgen;
 286       varTrk[5]=(Double_t)isph;
 287       varTrk[6]=y;
 288       varTrk[7]=dcaxy;
 289       ((THnSparseF*)fOutput->FindObject("NSparseHistTrk"))->Fill(varTrk);//track loop
 290
 291       //for nsigma PID fill double counting of ID
 292       if(fHelperPID->GetPIDType()<kBayes && fDoDoubleCounting){//only nsigma
 293         Bool_t *HasDC;
 294         HasDC=fHelperPID->GetDoubleCounting(track,kTRUE);//get the array with double counting
 295         for(Int_t ipart=0;ipart<kNSpecies;ipart++){
 296           if(HasDC[ipart]==kTRUE){
 297             varTrk[3]=(Double_t)ipart;
 298             ((THnSparseF*)fOutput->FindObject("NSparseHistTrk"))->Fill(varTrk);//track loop
 299           }
 300         }
 301       }
 302
 303       //fill all charged (3)
 304       varTrk[3]=3.;
 305       varTrk[4]=3.;
 306       ((THnSparseF*)fOutput->FindObject("NSparseHistTrk"))->Fill(varTrk);//track loop
 307     }//end if fFillOnlyEvents
 308
 309     //Printf("a track");
 310
 311     Nch++;
 312   } // end loop on tracks
 313
 314   Double_t varEv[3];
 315   varEv[0]=Cent;
 316   varEv[1]=Qvec;
 317   varEv[2]=Nch;
 318   ((THnSparseF*)fOutput->FindObject("NSparseHistEv"))->Fill(varEv);//event loop
 319
 320   PostData(1, fOutput  );
 321   PostData(2, fEventCuts);
 322   PostData(3, fTrackCuts);
 323   PostData(4, fHelperPID);
 324 }
 325
 326 //_________________________________________________________________
 327 Bool_t  AliAnalysisTaskSpectraAllChAOD::GetDCA(const AliAODTrack* trk, Double_t * p){
 328
 329   //AliAODTrack::DCA(): for newest AOD fTrack->DCA() always gives -999. This should fix.
 330   //FIXME should update EventCuts?
 331   //FIXME add track->GetXYZ(p) method
 332
 333   double xyz[3],cov[3];
 334
 335   if (!trk->GetXYZ(xyz)) { // dca is not stored
 336     AliExternalTrackParam etp;
 337     etp.CopyFromVTrack(trk);
 338     AliVEvent* ev = (AliVEvent*)trk->GetEvent();
 339     if (!ev) {/*printf("Event is not connected to the track\n");*/ return kFALSE;}
 340     if (!etp.PropagateToDCA(ev->GetPrimaryVertex(), ev->GetMagneticField(),999,xyz,cov)) return kFALSE; // failed, track is too far from vertex
 341   }
 342   p[0] = xyz[0];
 343   p[1] = xyz[1];
 344   return kTRUE;
 345
 346 }
 347
 348 //_________________________________________________________________
 349 void   AliAnalysisTaskSpectraAllChAOD::Terminate(Option_t *)
 350 {
 351   // Terminate
 352 }