PWGLF/SPECTRA/PiKaPr/TestAOD/AliAnalysisTaskSpectraBoth.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.              *
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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     *
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  13  * provided "as is" without express or implied warranty.                  *
  14  **************************************************************************/
  15
  16 //-----------------------------------------------------------------
  17 //         AliAnalysisTaskSpectraBoth 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 "TH3F.h"
  26 #include "TCanvas.h"
  27 #include "AliAnalysisTask.h"
  28 #include "AliAnalysisManager.h"
  29 #include "AliAODTrack.h"
  30 #include "AliAODMCParticle.h"
  31 #include "AliVParticle.h"
  32 #include "AliAODEvent.h"
  33 #include "AliAODInputHandler.h"
  34 #include "AliAnalysisTaskSpectraBoth.h"
  35 #include "AliAnalysisTaskESDfilter.h"
  36 #include "AliAnalysisDataContainer.h"
  37 #include "AliSpectraBothHistoManager.h"
  38 #include "AliSpectraBothTrackCuts.h"
  39 #include "AliSpectraBothEventCuts.h"
  40 #include "AliCentrality.h"
  41 #include "TProof.h"
  42 #include "AliPID.h"
  43 #include "AliVEvent.h"
  44 #include "AliESDEvent.h"
  45 #include "AliPIDResponse.h"
  46 #include "AliStack.h"
  47 #include "AliSpectraBothPID.h"
  48 #include "AliGenEventHeader.h"
  49 #include <TMCProcess.h>
  50
  51 #include <iostream>
  52
  53
  54
  55
  56 using namespace AliSpectraNameSpaceBoth;
  57 using namespace std;
  58
  59 ClassImp(AliAnalysisTaskSpectraBoth)
  60
  61 //________________________________________________________________________
  62 AliAnalysisTaskSpectraBoth::AliAnalysisTaskSpectraBoth(const char *name) : AliAnalysisTaskSE(name), fAOD(0), fHistMan(0), fTrackCuts(0), fEventCuts(0),  fPID(0), fIsMC(0), fNRebin(0),fUseMinSigma(0),fCuts(0),fdotheMCLoopAfterEventCuts(0),fmakePIDQAhisto(1),fMotherWDPDGcode(-1)
  63
  64 {
  65   // Default constructor
  66
  67   DefineInput(0, TChain::Class());
  68   DefineOutput(1, AliSpectraBothHistoManager::Class());
  69   DefineOutput(2, AliSpectraBothEventCuts::Class());
  70   DefineOutput(3, AliSpectraBothTrackCuts::Class());
  71   DefineOutput(4, AliSpectraBothPID::Class());
  72   fNRebin=0;
  73
  74 }
  75 //________________________________________________________________________
  76 //________________________________________________________________________
  77 void AliAnalysisTaskSpectraBoth::UserCreateOutputObjects()
  78 {
  79   // create output objects
  80   fHistMan = new AliSpectraBothHistoManager("SpectraHistos",fNRebin,fmakePIDQAhisto);
  81
  82   if (!fTrackCuts) AliFatal("Track Cuts should be set in the steering macro");
  83   if (!fEventCuts) AliFatal("Event Cuts should be set in the steering macro");
  84   if (!fPID)       AliFatal("PID object should be set in the steering macro");
  85   fTrackCuts->SetAliESDtrackCuts(fCuts);
  86   fEventCuts->InitHisto();
  87   fTrackCuts->InitHisto();
  88
  89   PostData(1, fHistMan  );
  90   PostData(2, fEventCuts);
  91   PostData(3, fTrackCuts);
  92   PostData(4, fPID      );
  93 }
  94 //________________________________________________________________________
  95 void AliAnalysisTaskSpectraBoth::UserExec(Option_t *)
  96 {
  97   // main event loop
  98         Int_t ifAODEvent=AliSpectraBothTrackCuts::kotherobject;
  99         fAOD = dynamic_cast<AliVEvent*>(InputEvent());
 100   //    AliESDEvent* esdevent=0x0;
 101  //     AliAODEvent* aodevent=0x0;
 102
 103         TString nameoftrack(fAOD->ClassName());
 104         if(!nameoftrack.CompareTo("AliESDEvent"))
 105         {
 106                 ifAODEvent=AliSpectraBothTrackCuts::kESDobject;
 107                 //esdevent=dynamic_cast<AliESDEvent*>(fAOD);
 108         }
 109         else if(!nameoftrack.CompareTo("AliAODEvent"))
 110         {
 111                 ifAODEvent=AliSpectraBothTrackCuts::kAODobject;
 112                 //aodevent=dynamic_cast<AliAODEvent*>(fAOD);
 113         }
 114         else
 115                 AliFatal("Not processing AODs or ESDS") ;
 116         if(fdotheMCLoopAfterEventCuts)
 117                 if(!fEventCuts->IsSelected(fAOD,fTrackCuts))
 118                         return;//event selection
 119         TClonesArray *arrayMC = 0;
 120         Int_t npar=0;
 121         AliStack* stack=0x0;
 122          Double_t mcZ=-100;
 123
 124         if (fIsMC)
 125         {
 126                 TArrayF mcVertex(3);
 127                 mcVertex[0]=9999.; mcVertex[1]=9999.; mcVertex[2]=9999.;
 128                 AliMCEvent* mcEvent=(AliMCEvent*)MCEvent();
 129                 if (!mcEvent)
 130                 {
 131                         AliFatal("Error: MC particles branch not found!\n");
 132                 }
 133                 AliHeader* header = mcEvent->Header();
 134                 if (!header)
 135                 {
 136                         AliDebug(AliLog::kError, "Header not available");
 137                         return;
 138                 }
 139
 140                 AliGenEventHeader* genHeader = header->GenEventHeader();
 141                 if(genHeader)
 142                 {
 143                         genHeader->PrimaryVertex(mcVertex);
 144                         mcZ=mcVertex[2];
 145                 }
 146                   if(ifAODEvent==AliSpectraBothTrackCuts::kAODobject)
 147                   {
 148                           arrayMC = (TClonesArray*) fAOD->GetList()->FindObject(AliAODMCParticle::StdBranchName());
 149                           if (!arrayMC)
 150                           {
 151                                         AliFatal("Error: MC particles branch not found!\n");
 152                           }
 153                           Int_t nMC = arrayMC->GetEntries();
 154                           for (Int_t iMC = 0; iMC < nMC; iMC++)
 155                           {
 156                                   AliAODMCParticle *partMC = (AliAODMCParticle*) arrayMC->At(iMC);
 157                                   if(!partMC->Charge()) continue;//Skip neutrals
 158                                   //if(partMC->Eta() > fTrackCuts->GetEtaMin() && partMC->Eta() < fTrackCuts->GetEtaMax()){//charged hadron are filled inside the eta acceptance
 159                                   //Printf("%f     %f-%f",partMC->Eta(),fTrackCuts->GetEtaMin(),fTrackCuts->GetEtaMax());
 160                                   if(partMC->Eta() > fTrackCuts->GetEtaMin() && partMC->Eta() < fTrackCuts->GetEtaMax())
 161                                                 fHistMan->GetPtHistogram(kHistPtGen)->Fill(partMC->Pt(),partMC->IsPhysicalPrimary());
 162                                   //rapidity cut
 163                                   if(partMC->Y() > fTrackCuts->GetYMax()|| partMC->Y() < fTrackCuts->GetYMin() )
 164                                         continue;
 165                                   if(partMC->IsPhysicalPrimary())
 166                                          npar++;
 167                                   // check for true PID + and fill P_t histos
 168                                   Int_t charge = partMC->Charge() > 0 ? kChPos : kChNeg ;
 169                                   Int_t id = fPID->GetParticleSpecie(partMC);
 170                                   if(id != kSpUndefined)
 171                                   {
 172                                         fHistMan->GetHistogram2D(kHistPtGenTruePrimary,id,charge)->Fill(partMC->Pt(),partMC->IsPhysicalPrimary());
 173                                   }
 174                           }
 175                   }
 176                   if(ifAODEvent==AliSpectraBothTrackCuts::kESDobject)
 177                   {
 178                         stack = mcEvent->Stack();
 179                         Int_t nMC = stack->GetNtrack();
 180                         for (Int_t iMC = 0; iMC < nMC; iMC++)
 181                         {
 182
 183                                 TParticle *partMC = stack->Particle(iMC);
 184
 185                                 if(!partMC)
 186                                         continue;
 187
 188                                 if(!partMC->GetPDG(0))
 189                                         continue;
 190                                 if(TMath::Abs(partMC->GetPDG(0)->Charge()/3.0)<0.01)
 191                                         continue;//Skip neutrals
 192                                 if(partMC->Eta() > fTrackCuts->GetEtaMin() && partMC->Eta() < fTrackCuts->GetEtaMax())
 193                                         fHistMan->GetPtHistogram(kHistPtGen)->Fill(partMC->Pt(),stack->IsPhysicalPrimary(iMC));
 194                                 if(partMC->Y()   > fTrackCuts->GetYMax() ||partMC->Y()   < fTrackCuts->GetYMin()  )
 195                                         continue;
 196                                 if(stack->IsPhysicalPrimary(iMC))
 197                                          npar++;
 198                                   // check for true PID + and fill P_t histos
 199                                 Int_t charge = partMC->GetPDG(0)->Charge()/3.0 > 0 ? kChPos : kChNeg ;
 200                                 Int_t id = fPID->GetParticleSpecie(partMC);
 201                                 if(id != kSpUndefined)
 202                                 {
 203                                         fHistMan->GetHistogram2D(kHistPtGenTruePrimary,id,charge)->Fill(partMC->Pt(),stack->IsPhysicalPrimary(iMC));
 204                                 }
 205                           }
 206                   }
 207         }
 208         if(!fdotheMCLoopAfterEventCuts)
 209                 if(!fEventCuts->IsSelected(fAOD,fTrackCuts,fIsMC,mcZ))
 210                         return;//event selection
 211         //main loop on tracks
 212         Int_t ntracks=0;
 213         //cout<<fAOD->GetNumberOfTracks()<<endl;
 214         for (Int_t iTracks = 0; iTracks < fAOD->GetNumberOfTracks(); iTracks++)
 215         {
 216                 AliVTrack* track = dynamic_cast<AliVTrack*>(fAOD->GetTrack(iTracks));
 217                 AliAODTrack* aodtrack=0;
 218                 AliESDtrack* esdtrack=0;
 219                 Float_t dca=-999.;
 220                 Float_t dcaz=-999.;
 221                 Short_t ncls=-1;
 222                 Float_t chi2perndf=-1.0;
 223                 if(ifAODEvent==AliSpectraBothTrackCuts::kESDobject)
 224                 {
 225                         esdtrack=dynamic_cast<AliESDtrack*>(track);
 226                         if(!esdtrack)
 227                                 continue;
 228                         esdtrack->GetImpactParameters(dca,dcaz);
 229                         ncls=esdtrack->GetTPCNcls();
 230                         if ( ncls > 5)
 231                                 chi2perndf=(esdtrack->GetTPCchi2()/Float_t(ncls - 5));
 232
 233                         else
 234                                 chi2perndf=-1;
 235
 236                 }
 237                 else if (ifAODEvent==AliSpectraBothTrackCuts::kAODobject)
 238                 {
 239                         aodtrack=dynamic_cast<AliAODTrack*>(track);
 240                         if(!aodtrack)
 241                                 continue;
 242                         dca=aodtrack->DCA();
 243                         dcaz=aodtrack->ZAtDCA();
 244                         ncls=aodtrack->GetTPCNcls();
 245                         chi2perndf=aodtrack->Chi2perNDF();
 246                 }
 247                 else
 248                         continue;
 249                 if (!fTrackCuts->IsSelected(track,kTRUE))
 250                         continue;
 251
 252                 ntracks++;
 253                 if(fmakePIDQAhisto)
 254                         fPID->FillQAHistos(fHistMan, track, fTrackCuts);
 255
 256                 //calculate DCA for AOD track
 257                 if(dca==-999.)
 258                 {// track->DCA() does not work in old AOD production
 259                         Double_t d[2], covd[3];
 260                         AliVTrack* track_clone=(AliVTrack*)track->Clone("track_clone"); // need to clone because PropagateToDCA updates the track parameters
 261                         Bool_t isDCA = track_clone->PropagateToDCA(fAOD->GetPrimaryVertex(),fAOD->GetMagneticField(),9999.,d,covd);
 262                         delete track_clone;
 263                         if(!isDCA)
 264                                 d[0]=-999.;
 265                         dca=d[0];
 266                         dcaz=d[1];
 267                 }
 268
 269                 fHistMan->GetPtHistogram(kHistPtRec)->Fill(track->Pt(),dca);  // PT histo
 270                 // get identity and charge
 271                 Bool_t rec[3]={false,false,false};
 272                 Bool_t sel[3]={false,false,false};
 273                 Int_t idRec  = fPID->GetParticleSpecie(fHistMan,track, fTrackCuts,rec);
 274                 for(int irec=kSpPion;irec<kNSpecies;irec++)
 275                 {
 276
 277                         if(fUseMinSigma)
 278                         {
 279                                 if(irec>kSpPion)
 280                                         break;
 281                         }
 282                         else
 283                         {
 284                                 if(!rec[irec])
 285                                         idRec = kSpUndefined;
 286                                 else
 287                                         idRec=irec;
 288                         }
 289
 290                         Int_t charge = track->Charge() > 0 ? kChPos : kChNeg;
 291
 292                         // Fill histograms, only if inside y and nsigma acceptance
 293                         if(idRec != kSpUndefined && fTrackCuts->CheckYCut ((BothParticleSpecies_t)idRec))
 294                         {
 295                                 fHistMan->GetHistogram2D(kHistPtRecSigma,idRec,charge)->Fill(track->Pt(),dca);
 296                                 fTrackCuts->GetHistoDCAzQA()->Fill(idRec,track->Pt(),dcaz);
 297                                 fTrackCuts->GetHistoNclustersQA()->Fill(idRec,track->Pt(),ncls);
 298                                 fTrackCuts->GetHistochi2perNDFQA()->Fill(idRec,track->Pt(),chi2perndf);
 299                                 sel[idRec]=true;
 300                         }
 301                         //can't put a continue because we still have to fill allcharged primaries, done later
 302
 303                         /* MC Part */
 304                         if (arrayMC||stack)
 305                         {
 306                                 Bool_t isPrimary           = kFALSE;
 307                                 Bool_t isSecondaryMaterial = kFALSE;
 308                                 Bool_t isSecondaryWeak     = kFALSE;
 309                                 Int_t idGen     =kSpUndefined;
 310                                 Int_t pdgcode=0;
 311                                 Int_t motherpdg=-1;
 312                                 if (ifAODEvent==AliSpectraBothTrackCuts::kAODobject)
 313                                 {
 314                                         AliAODMCParticle *partMC = (AliAODMCParticle*) arrayMC->At(TMath::Abs(track->GetLabel()));
 315                                         if (!partMC)
 316                                         {
 317                                                 AliError("Cannot get MC particle");
 318                                                 continue;
 319                                         }
 320                                         // Check if it is primary, secondary from material or secondary from weak decay
 321                                         isPrimary           = partMC->IsPhysicalPrimary();
 322                                         isSecondaryWeak     = partMC->IsSecondaryFromWeakDecay();
 323                                         isSecondaryMaterial      = partMC->IsSecondaryFromMaterial();
 324                                         //cout<<"AOD tagging "<<isPrimary<<" "<<isSecondaryWeak<<isSecondaryMaterial<<" "<<partMC->GetMCProcessCode()<<endl;
 325
 326                                         if(!isPrimary&&!isSecondaryWeak&&!isSecondaryMaterial)//old tagging for old AODs
 327                                         {
 328                                                 AliError("old tagging");
 329                                                 Int_t mfl=-999,codemoth=-999;
 330                                                 Int_t indexMoth=partMC->GetMother(); // FIXME ignore fakes? TO BE CHECKED, on ESD is GetFirstMother()
 331                                                 if(indexMoth>=0)
 332                                                 {//is not fake
 333                                                         AliAODMCParticle* moth = (AliAODMCParticle*) arrayMC->At(indexMoth);
 334                                                         codemoth = TMath::Abs(moth->GetPdgCode());
 335                                                         mfl = Int_t (codemoth/ TMath::Power(10, Int_t(TMath::Log10(codemoth))));
 336                                                 }
 337                                                 //Int_t uniqueID = partMC->GetUniqueID();
 338                                                 //cout<<"uniqueID: "<<partMC->GetUniqueID()<<"       "<<kPDecay<<endl;
 339                                                 //cout<<"status: "<<partMC->GetStatus()<<"       "<<kPDecay<<endl;
 340                                                 // if(uniqueID == kPDecay)Printf("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
 341                                                 if(mfl==3)
 342                                                         isSecondaryWeak     = kTRUE; // add if(partMC->GetStatus() & kPDecay)? FIXME
 343                                                 else
 344                                                         isSecondaryMaterial = kTRUE;
 345                                         }
 346                                         //cout<<"AOD 2 tagging "<<isPrimary<<" "<<isSecondaryWeak<<isSecondaryMaterial<<" "<<partMC->GetMCProcessCode()<<endl;
 347                                         if(isSecondaryWeak)
 348                                         {
 349                                                 Int_t indexMoth=partMC->GetMother(); // FIXME ignore fakes? TO BE CHECKED, on ESD is GetFirstMother()
 350                                                 if(indexMoth>=0)
 351                                                 {
 352                                                         AliAODMCParticle* moth = (AliAODMCParticle*) arrayMC->At(indexMoth);
 353                                                         if(moth)
 354                                                                 motherpdg=TMath::Abs(moth->GetPdgCode());
 355                                                 }
 356                                         }
 357
 358                                         idGen     = fPID->GetParticleSpecie(partMC);
 359                                         pdgcode=partMC->GetPdgCode();
 360                                 }
 361                                 else if (ifAODEvent==AliSpectraBothTrackCuts::kESDobject)
 362                                 {
 363                                         TParticle *partMC =stack->Particle(TMath::Abs(track->GetLabel()));
 364                                         if (!partMC)
 365                                         {
 366                                                 AliError("Cannot get MC particle");
 367                                                 continue;
 368                                         }
 369                                         isPrimary           = stack->IsPhysicalPrimary(TMath::Abs(track->GetLabel()));
 370                                         isSecondaryWeak     = stack->IsSecondaryFromWeakDecay(TMath::Abs(track->GetLabel()));
 371                                         isSecondaryMaterial      = stack->IsSecondaryFromMaterial(TMath::Abs(track->GetLabel()));
 372                                         //cout<<"ESD tagging "<<isPrimary<<" "<<isSecondaryWeak<<isSecondaryMaterial<<endl;
 373
 374                                         if(isSecondaryWeak)
 375                                         {
 376
 377                                                 TParticle* moth=stack->Particle(TMath::Abs(partMC->GetFirstMother()));
 378                                                 if(moth)
 379                                                          motherpdg = TMath::Abs(moth->GetPdgCode());
 380
 381                                         }
 382
 383
 384                                         idGen     = fPID->GetParticleSpecie(partMC);
 385                                         pdgcode=partMC->GetPdgCode();
 386                                 }
 387                                 else
 388                                         return;
 389
 390                         //        cout<<isPrimary<<" "<<isSecondaryWeak<<" "<<isSecondaryMaterial<<endl;
 391                         //        cout<<" functions "<<partMC->IsPhysicalPrimary()<<" "<<partMC->IsSecondaryFromWeakDecay()<<" "<<partMC->IsSecondaryFromMaterial()<<endl;
 392
 393                                 if (isPrimary&&irec==kSpPion)
 394                                         fHistMan->GetPtHistogram(kHistPtRecPrimaryAll)->Fill(track->Pt(),dca);  // PT histo of reconstrutsed primaries in defined eta
 395
 396                         //nsigma cut (reconstructed nsigma)
 397                                 if(idRec == kSpUndefined)
 398                                         continue;
 399
 400                         // rapidity cut (reconstructed pt and identity)
 401                                  if(!fTrackCuts->CheckYCut ((BothParticleSpecies_t)idRec)) continue;
 402
 403                   // Get true ID
 404
 405
 406                                  if (idRec == idGen) fHistMan->GetHistogram2D(kHistPtRecTrue,  idGen, charge)->Fill(track->Pt(),dca);
 407
 408                                 if (isPrimary)
 409                                 {
 410                                         fHistMan->GetHistogram2D(kHistPtRecSigmaPrimary, idRec, charge)->Fill(track->Pt(),dca);
 411                                         if(idGen != kSpUndefined)
 412                                         {
 413                                                 fHistMan->GetHistogram2D(kHistPtRecPrimary,      idGen, charge)->Fill(track->Pt(),dca);
 414                                                 if (idRec == idGen)
 415                                                         fHistMan->GetHistogram2D(kHistPtRecTruePrimary,  idGen, charge)->Fill(track->Pt(),dca);
 416                                         }
 417                                 }
 418                                  //25th Apr - Muons are added to Pions -- FIXME
 419                                 if ( pdgcode == 13 && idRec == kSpPion)
 420                                 {
 421                                         fHistMan->GetPtHistogram(kHistPtRecTrueMuonPlus)->Fill(track->Pt(),dca);
 422                                         if(isPrimary)
 423                                                 fHistMan->GetPtHistogram(kHistPtRecTruePrimaryMuonPlus)->Fill(track->Pt(),dca);
 424                                 }
 425                                 if ( pdgcode == -13 && idRec == kSpPion)
 426                                 {
 427                                         fHistMan->GetPtHistogram(kHistPtRecTrueMuonMinus)->Fill(track->Pt(),dca);
 428                                         if (isPrimary)
 429                                         {
 430                                                 fHistMan->GetPtHistogram(kHistPtRecTruePrimaryMuonMinus)->Fill(track->Pt(),dca);
 431                                         }
 432                                 }
 433
 434                                  ///..... END FIXME
 435
 436                                 // Fill secondaries
 437                                 if(isSecondaryWeak)
 438                                 {
 439                                         if(fMotherWDPDGcode>0)
 440                                         {
 441                                                 if(motherpdg==fMotherWDPDGcode)
 442                                                         fHistMan->GetHistogram2D(kHistPtRecSigmaSecondaryWeakDecay, idRec, charge)->Fill(track->Pt(),dca);
 443                                         }
 444                                         else
 445                                                 fHistMan->GetHistogram2D(kHistPtRecSigmaSecondaryWeakDecay, idRec, charge)->Fill(track->Pt(),dca);
 446                                 }
 447                                 if(isSecondaryMaterial)
 448                                         fHistMan->GetHistogram2D(kHistPtRecSigmaSecondaryMaterial , idRec, charge)->Fill(track->Pt(),dca);
 449
 450                         }//end if(arrayMC)
 451                 }
 452                 if(sel[0]&&sel[1]&&sel[2])//pi+k+p
 453                         fHistMan->GetPtHistogram("hHistDoubleCounts")->Fill(track->Pt(),0);
 454                 else if(sel[0]&&sel[1]) //pi+k
 455                         fHistMan->GetPtHistogram("hHistDoubleCounts")->Fill(track->Pt(),1);
 456                 else if(sel[0]&&sel[2]) //pi+k
 457                         fHistMan->GetPtHistogram("hHistDoubleCounts")->Fill(track->Pt(),2);
 458                 else if(sel[1]&&sel[2]) //p+k
 459                         fHistMan->GetPtHistogram("hHistDoubleCounts")->Fill(track->Pt(),3);
 460
 461
 462
 463         } // end loop on tracks
 464
 465  // cout<< ntracks<<endl;
 466   fHistMan->GetGenMulvsRawMulHistogram("hHistGenMulvsRawMul")->Fill(npar,ntracks);
 467   PostData(1, fHistMan  );
 468   PostData(2, fEventCuts);
 469   PostData(3, fTrackCuts);
 470   PostData(4, fPID      );
 471 }
 472
 473 //_________________________________________________________________
 474 void   AliAnalysisTaskSpectraBoth::Terminate(Option_t *)
 475 {
 476   // Terminate
 477 }