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=7;
 130   //                                             pt          cent    IDgen        isph        y    etaselected       Qvec gen
 131   Int_t    binsHistRealSt[nvarst] = {      nptBins,  fnCentBins,        3,         2,        2,             1,      fnQvecBins};
 132   Double_t xminHistRealSt[nvarst] = {         0.,           0.,      -0.5,      -0.5,    -0.5,            0.5,              0.};
 133   Double_t xmaxHistRealSt[nvarst] = {       10.,        100.,      2.5,       1.5,      0.5,           1.5,      fQvecUpperLim};
 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   NSparseHistSt->GetAxis(6)->SetTitle("Q vec gen");
 149   NSparseHistSt->GetAxis(6)->SetName("Q_vec_gen");
 150   fOutput->Add(NSparseHistSt);
 151
 152   //dimensions of THnSparse for the normalization
 153   const Int_t nvarev=4;
 154   //                                             cent             Q vec                Nch    Qvec gen
 155   Int_t    binsHistRealEv[nvarev] = {    fnCentBins,      fnQvecBins,           fnNchBins,      fnQvecBins};
 156   Double_t xminHistRealEv[nvarev] = {           0.,               0.,                   0.,             0.};
 157   Double_t xmaxHistRealEv[nvarev] = {       100.,  fQvecUpperLim,               2000.,       fQvecUpperLim};
 158   THnSparseF* NSparseHistEv = new THnSparseF("NSparseHistEv","NSparseHistEv",nvarev,binsHistRealEv,xminHistRealEv,xmaxHistRealEv);
 159   NSparseHistEv->GetAxis(0)->SetTitle(Form("%s cent",fEventCuts->GetCentralityMethod().Data()));
 160   NSparseHistEv->GetAxis(0)->SetName(Form("%s_cent",fEventCuts->GetCentralityMethod().Data()));
 161   NSparseHistEv->GetAxis(1)->SetTitle("Q vec");
 162   NSparseHistEv->GetAxis(1)->SetName("Q_vec");
 163   NSparseHistEv->GetAxis(2)->SetTitle("N charged");
 164   NSparseHistEv->GetAxis(2)->SetName("N_ch");
 165   NSparseHistEv->GetAxis(3)->SetTitle("Q vec gen");
 166   NSparseHistEv->GetAxis(3)->SetName("Q_vec_gen");
 167   fOutput->Add(NSparseHistEv);
 168
 169   PostData(1, fOutput  );
 170   PostData(2, fEventCuts);
 171   PostData(3, fTrackCuts);
 172   PostData(4, fHelperPID);
 173 }
 174
 175 //________________________________________________________________________
 176
 177 void AliAnalysisTaskSpectraAllChAOD::UserExec(Option_t *)
 178 {
 179   //Printf("An event");
 180   // main event loop
 181   fAOD = dynamic_cast<AliAODEvent*>(fInputEvent);
 182   if (!fAOD) {
 183     AliWarning("ERROR: AliAODEvent not available \n");
 184     return;
 185   }
 186
 187   if (strcmp(fAOD->ClassName(), "AliAODEvent"))
 188     {
 189       AliFatal("Not processing AODs");
 190     }
 191
 192   if(!fEventCuts->IsSelected(fAOD,fTrackCuts))return;//event selection
 193
 194   //Default TPC priors
 195   //if(fHelperPID->GetPIDType()==kBayes)fHelperPID->GetPIDCombined()->SetDefaultTPCPriors();//FIXME maybe this can go in the UserCreateOutputObject?
 196
 197   Double_t Qvec=0.;
 198   if(fIsQvecCalibMode){
 199     if(fVZEROside==0)Qvec=fEventCuts->GetqV0A();
 200     else if (fVZEROside==1)Qvec=fEventCuts->GetqV0C();
 201   }
 202   else Qvec=fEventCuts->GetQvecPercentile(fVZEROside);
 203
 204   Double_t QvecMC = 0.;
 205   if(fIsMC){
 206     if(fIsQvecCalibMode){
 207       QvecMC = fEventCuts->CalculateQVectorMC(fVZEROside);
 208     }
 209   }
 210
 211   Double_t Cent=fEventCuts->GetCent();
 212
 213   // First do MC to fill up the MC particle array
 214   TClonesArray *arrayMC = 0;
 215   if (fIsMC)
 216     {
 217       arrayMC = (TClonesArray*) fAOD->GetList()->FindObject(AliAODMCParticle::StdBranchName());
 218       if (!arrayMC) {
 219         AliFatal("Error: MC particles branch not found!\n");
 220       }
 221       Int_t nMC = arrayMC->GetEntries();
 222       for (Int_t iMC = 0; iMC < nMC; iMC++)
 223         {
 224           AliAODMCParticle *partMC = (AliAODMCParticle*) arrayMC->At(iMC);
 225           if(!partMC->Charge()) continue;//Skip neutrals
 226           if(fCharge != 0 && partMC->Charge()*fCharge < 0.) continue;//if fCharge != 0 only select fCharge
 227
 228           //flag to select particle in the same ETA acceptance of the tracks (to be used for the comparison with AllCh)
 229           Double_t etaselected=-1.;
 230           if(partMC->Eta()>=fTrackCuts->GetEtaMin() && partMC->Eta()<=fTrackCuts->GetEtaMax())etaselected=1.;
 231
 232           //pt     cent    IDgen        isph        y
 233           Double_t varSt[7];
 234           varSt[0]=partMC->Pt();
 235           varSt[1]=Cent;
 236           varSt[2]=(Double_t)fHelperPID->GetParticleSpecies(partMC);
 237           varSt[3]=(Double_t)partMC->IsPhysicalPrimary();
 238           varSt[4]=partMC->Y();
 239           varSt[5]=etaselected;
 240           varSt[6]=QvecMC;
 241           ((THnSparseF*)fOutput->FindObject("NSparseHistSt"))->Fill(varSt);//stack loop
 242
 243           //Printf("a particle");
 244
 245         }
 246     }
 247
 248   //main loop on tracks
 249
 250   Int_t Nch = 0.;
 251
 252   for (Int_t iTracks = 0; iTracks < fAOD->GetNumberOfTracks(); iTracks++) {
 253     AliAODTrack* track = fAOD->GetTrack(iTracks);
 254     if(fCharge != 0 && track->Charge() != fCharge) continue;//if fCharge != 0 only select fCharge
 255     if (!fTrackCuts->IsSelected(track,kTRUE)) continue; //track selection (rapidity selection NOT in the standard cuts)
 256     if(!fFillOnlyEvents){
 257       Int_t IDrec=fHelperPID->GetParticleSpecies(track,kTRUE);//id from detector
 258       Double_t y= track->Y(fHelperPID->GetMass((AliHelperParticleSpecies_t)IDrec));
 259       Int_t IDgen=kSpUndefined;//set if MC
 260       Int_t isph=-999;
 261 //       Int_t iswd=-999;
 262
 263       if (arrayMC) {
 264         AliAODMCParticle *partMC = (AliAODMCParticle*) arrayMC->At(TMath::Abs(track->GetLabel()));
 265         if (!partMC) {
 266           AliError("Cannot get MC particle");
 267           continue;
 268         }
 269         IDgen=fHelperPID->GetParticleSpecies(partMC);
 270         isph=partMC->IsPhysicalPrimary();
 271         //iswd=partMC->IsSecondaryFromWeakDecay();//FIXME not working on old productions - removed Apr 8th 2014
 272
 273         if(fIsAOD160){// enabled for new ADO160 only
 274           if(partMC->IsSecondaryFromWeakDecay()) isph=2.;
 275           if(partMC->IsSecondaryFromMaterial()) isph=3.;
 276
 277         }
 278       }
 279
 280       /*** DCA ***/
 281       Double_t dcaxy = -999.;
 282       Double_t dcaz = -999.;
 283
 284       Double_t p[2];
 285       if(GetDCA(track,p)){ dcaxy=p[0]; dcaz=p[1];}
 286
 287       if(dcaz >= fDCAzCut) continue;
 288
 289     //pt     cent    Q vec     IDrec     IDgen       isph      y
 290       Double_t varTrk[8];
 291       varTrk[0]=track->Pt();
 292       varTrk[1]=Cent;
 293       varTrk[2]=Qvec;
 294       varTrk[3]=(Double_t)IDrec;
 295       varTrk[4]=(Double_t)IDgen;
 296       varTrk[5]=(Double_t)isph;
 297       varTrk[6]=y;
 298       varTrk[7]=dcaxy;
 299       ((THnSparseF*)fOutput->FindObject("NSparseHistTrk"))->Fill(varTrk);//track loop
 300
 301       //for nsigma PID fill double counting of ID
 302       if(fHelperPID->GetPIDType()<kBayes && fDoDoubleCounting){//only nsigma
 303         Bool_t *HasDC;
 304         HasDC=fHelperPID->GetDoubleCounting(track,kTRUE);//get the array with double counting
 305         for(Int_t ipart=0;ipart<kNSpecies;ipart++){
 306           if(HasDC[ipart]==kTRUE){
 307             varTrk[3]=(Double_t)ipart;
 308             ((THnSparseF*)fOutput->FindObject("NSparseHistTrk"))->Fill(varTrk);//track loop
 309           }
 310         }
 311       }
 312
 313       //fill all charged (3)
 314       varTrk[3]=3.;
 315       varTrk[4]=3.;
 316       ((THnSparseF*)fOutput->FindObject("NSparseHistTrk"))->Fill(varTrk);//track loop
 317     }//end if fFillOnlyEvents
 318
 319     //Printf("a track");
 320
 321     Nch++;
 322   } // end loop on tracks
 323
 324   Double_t varEv[4];
 325   varEv[0]=Cent;
 326   varEv[1]=Qvec;
 327   varEv[2]=Nch;
 328   varEv[3]=QvecMC;
 329   ((THnSparseF*)fOutput->FindObject("NSparseHistEv"))->Fill(varEv);//event loop
 330
 331   PostData(1, fOutput  );
 332   PostData(2, fEventCuts);
 333   PostData(3, fTrackCuts);
 334   PostData(4, fHelperPID);
 335 }
 336
 337 //_________________________________________________________________
 338 Bool_t  AliAnalysisTaskSpectraAllChAOD::GetDCA(const AliAODTrack* trk, Double_t * p){
 339
 340   //AliAODTrack::DCA(): for newest AOD fTrack->DCA() always gives -999. This should fix.
 341   //FIXME should update EventCuts?
 342   //FIXME add track->GetXYZ(p) method
 343
 344   double xyz[3],cov[3];
 345
 346   if (!trk->GetXYZ(xyz)) { // dca is not stored
 347     AliExternalTrackParam etp;
 348     etp.CopyFromVTrack(trk);
 349     AliVEvent* ev = (AliVEvent*)trk->GetEvent();
 350     if (!ev) {/*printf("Event is not connected to the track\n");*/ return kFALSE;}
 351     if (!etp.PropagateToDCA(ev->GetPrimaryVertex(), ev->GetMagneticField(),999,xyz,cov)) return kFALSE; // failed, track is too far from vertex
 352   }
 353   p[0] = xyz[0];
 354   p[1] = xyz[1];
 355   return kTRUE;
 356
 357 }
 358
 359 //_________________________________________________________________
 360 void   AliAnalysisTaskSpectraAllChAOD::Terminate(Option_t *)
 361 {
 362   // Terminate
 363 }