PWGDQ/dielectron/AliAnalysisTaskDielectronFilter.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 //                                                                       //
  18 //                        Basic Analysis Task                            //
  19 //                                                                       //
  20 ///////////////////////////////////////////////////////////////////////////
  21
  22 #include <TChain.h>
  23 #include <TH1D.h>
  24 #include <AliLog.h>
  25 #include <AliAODHandler.h>
  26 #include <AliAODInputHandler.h>
  27 #include <AliAnalysisManager.h>
  28 #include <AliVEvent.h>
  29 #include <AliTriggerAnalysis.h>
  30 #include <AliInputEventHandler.h>
  31 #include <AliAODInputHandler.h>
  32 #include <AliESDInputHandler.h>
  33
  34 #include "AliDielectron.h"
  35 #include "AliDielectronMC.h"
  36 #include "AliDielectronHistos.h"
  37 #include "AliDielectronVarManager.h"
  38 #include "AliAnalysisTaskDielectronFilter.h"
  39 #include "AliAODCaloCluster.h"
  40
  41 ClassImp(AliAnalysisTaskDielectronFilter)
  42
  43 //_________________________________________________________________________________
  44 AliAnalysisTaskDielectronFilter::AliAnalysisTaskDielectronFilter() :
  45 AliAnalysisTaskSE(),
  46 fDielectron(0),
  47 fSelectPhysics(kTRUE),
  48 fTriggerMask(AliVEvent::kMB),
  49 fExcludeTriggerMask(0),
  50 fTriggerOnV0AND(kFALSE),
  51 fRejectPileup(kFALSE),
  52 fEventStat(0x0),
  53 fTriggerLogic(kAny),
  54 fTriggerAnalysis(0x0),
  55 fStoreLikeSign(kFALSE),
  56 fStoreRotatedPairs(kFALSE),
  57 fStoreEventsWithSingleTracks(kFALSE),
  58 fCreateNanoAOD(kFALSE),
  59 fStoreHeader(kFALSE),
  60 fEventFilter(0x0)
  61 {
  62   //
  63   // Constructor
  64   //
  65 }
  66
  67 //_________________________________________________________________________________
  68 AliAnalysisTaskDielectronFilter::AliAnalysisTaskDielectronFilter(const char *name) :
  69 AliAnalysisTaskSE(name),
  70 fDielectron(0),
  71 fSelectPhysics(kTRUE),
  72 fTriggerMask(AliVEvent::kMB),
  73 fExcludeTriggerMask(0),
  74 fTriggerOnV0AND(kFALSE),
  75 fRejectPileup(kFALSE),
  76 fEventStat(0x0),
  77 fTriggerLogic(kAny),
  78 fTriggerAnalysis(0x0),
  79 fStoreLikeSign(kFALSE),
  80 fStoreRotatedPairs(kFALSE),
  81 fStoreEventsWithSingleTracks(kFALSE),
  82 fCreateNanoAOD(kFALSE),
  83 fStoreHeader(kFALSE),
  84 fEventFilter(0x0)
  85 {
  86   //
  87   // Constructor
  88   //
  89   DefineInput(0,TChain::Class());
  90   DefineOutput(1, THashList::Class());
  91   DefineOutput(2, TH1D::Class());
  92 }
  93
  94 //_________________________________________________________________________________
  95 void AliAnalysisTaskDielectronFilter::Init()
  96 {
  97   // Initialization
  98   if (fDebug > 1) AliInfo("Init() \n");
  99
 100 // require AOD handler
 101   AliAODHandler *aodH = (AliAODHandler*)((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler());
 102   if (!aodH) AliFatal("No AOD handler. Halting.");
 103
 104   aodH->AddFilteredAOD("AliAOD.Dielectron.root", "DielectronEvents");
 105 //   AddAODBranch("AliDielectronCandidates",fDielectron->GetPairArraysPointer(),"deltaAOD.Dielectron.root");
 106 }
 107
 108 //_________________________________________________________________________________
 109 void AliAnalysisTaskDielectronFilter::UserCreateOutputObjects()
 110 {
 111   //
 112   // Initilise histograms
 113   //
 114
 115   //require dielectron framework
 116   if (!fDielectron) {
 117     AliFatal("Dielectron framework class required. Please create and instance with proper cuts and set it via 'SetDielectron' before executing this task!!!");
 118     return;
 119   }
 120   if(fStoreRotatedPairs) fDielectron->SetStoreRotatedPairs(kTRUE);
 121   fDielectron->SetDontClearArrays();
 122   fDielectron->Init();
 123
 124   Int_t nbins=kNbinsEvent+2;
 125   if (!fEventStat){
 126     fEventStat=new TH1D("hEventStat","Event statistics",nbins,0,nbins);
 127     fEventStat->GetXaxis()->SetBinLabel(1,"Before Phys. Sel.");
 128     fEventStat->GetXaxis()->SetBinLabel(2,"After Phys. Sel.");
 129
 130     //default names
 131     fEventStat->GetXaxis()->SetBinLabel(3,"Bin3 not used");
 132     fEventStat->GetXaxis()->SetBinLabel(4,"Bin4 not used");
 133     fEventStat->GetXaxis()->SetBinLabel(5,"Bin5 not used");
 134
 135     if(fTriggerOnV0AND) fEventStat->GetXaxis()->SetBinLabel(3,"V0and triggers");
 136     if (fEventFilter) fEventStat->GetXaxis()->SetBinLabel(4,"After Event Filter");
 137     if (fRejectPileup) fEventStat->GetXaxis()->SetBinLabel(5,"After Pileup rejection");
 138
 139     fEventStat->GetXaxis()->SetBinLabel((kNbinsEvent+1),Form("#splitline{1 candidate}{%s}",fDielectron->GetName()));
 140     fEventStat->GetXaxis()->SetBinLabel((kNbinsEvent+2),Form("#splitline{With >1 candidate}{%s}",fDielectron->GetName()));
 141    }
 142
 143 Bool_t isAOD=AliAnalysisManager::GetAnalysisManager()->GetInputEventHandler()->IsA()==AliAODInputHandler::Class();
 144 if(fCreateNanoAOD && isAOD){
 145   AliAODHandler *aodH = (AliAODHandler*)((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler());
 146   AliAODExtension *extDielectron = aodH->GetFilteredAOD("AliAOD.Dielectron.root");
 147    TClonesArray *nanoAODTracks = new TClonesArray("AliAODTrack",500);
 148    nanoAODTracks->SetName("tracks");
 149    extDielectron->AddBranch("TClonesArray", &nanoAODTracks);
 150    TClonesArray *nanoAODVertices = new TClonesArray("AliAODVertex",500);
 151    nanoAODVertices->SetName("vertices");
 152    extDielectron->AddBranch("TClonesArray", &nanoAODVertices);
 153    TClonesArray *nanoAODCaloCluster = new TClonesArray("AliAODCaloCluster",500);
 154    nanoAODCaloCluster->SetName("caloClusters");
 155    extDielectron->AddBranch("TClonesArray", &nanoAODCaloCluster);
 156    extDielectron->GetAOD()->GetStdContent();
 157    }else if(fCreateNanoAOD && !isAOD){AliWarning("Filtered-Nano AODs creation works only on AODs ");  }
 158
 159   PostData(1, const_cast<THashList*>(fDielectron->GetHistogramList()));
 160   PostData(2,fEventStat);
 161 }
 162
 163 //_________________________________________________________________________________
 164 void AliAnalysisTaskDielectronFilter::UserExec(Option_t *)
 165 {
 166   //
 167   // Main loop. Called for every event
 168   //
 169
 170   if (!fDielectron) return;
 171
 172   AliAnalysisManager *man=AliAnalysisManager::GetAnalysisManager();
 173   Bool_t isESD=man->GetInputEventHandler()->IsA()==AliESDInputHandler::Class();
 174   Bool_t isAOD=man->GetInputEventHandler()->IsA()==AliAODInputHandler::Class();
 175
 176
 177   AliInputEventHandler* inputHandler = (AliInputEventHandler*) (man->GetInputEventHandler());
 178   if (!inputHandler) return;
 179
 180   if ( inputHandler->GetPIDResponse() ){
 181     AliDielectronVarManager::SetPIDResponse( inputHandler->GetPIDResponse() );
 182   } else {
 183     AliFatal("This task needs the PID response attached to the input event handler!");
 184   }
 185
 186   // Was event selected ?
 187   ULong64_t isSelected = AliVEvent::kAny;
 188   Bool_t isRejected = kFALSE;
 189   if( fSelectPhysics && inputHandler){
 190     if((isESD && inputHandler->GetEventSelection()) || isAOD){
 191       isSelected = inputHandler->IsEventSelected();
 192       if (fExcludeTriggerMask && (isSelected&fExcludeTriggerMask)) isRejected=kTRUE;
 193       if (fTriggerLogic==kAny) isSelected&=fTriggerMask;
 194       else if (fTriggerLogic==kExact) isSelected=((isSelected&fTriggerMask)==fTriggerMask);
 195     }
 196    }
 197
 198   //before physics selection
 199   fEventStat->Fill(kAllEvents);
 200   if (isSelected==0||isRejected) {
 201     PostData(2,fEventStat);
 202     return;
 203   }
 204   //after physics selection
 205   fEventStat->Fill(kSelectedEvents);
 206
 207   //V0and
 208   if(fTriggerOnV0AND){
 209   if(isESD){if (!fTriggerAnalysis->IsOfflineTriggerFired(static_cast<AliESDEvent*>(InputEvent()), AliTriggerAnalysis::kV0AND))
 210             return;}
 211   if(isAOD){if(!((static_cast<AliAODEvent*>(InputEvent()))->GetVZEROData()->GetV0ADecision() == AliVVZERO::kV0BB &&
 212             (static_cast<AliAODEvent*>(InputEvent()))->GetVZEROData()->GetV0CDecision() == AliVVZERO::kV0BB) )
 213             return;}
 214    }
 215
 216    fEventStat->Fill(kV0andEvents);
 217
 218   //Fill Event histograms before the event filter
 219   Double_t values[AliDielectronVarManager::kNMaxValues]={0};
 220   Double_t valuesMC[AliDielectronVarManager::kNMaxValues]={0};
 221   AliDielectronVarManager::SetEvent(InputEvent());
 222   AliDielectronVarManager::Fill(InputEvent(),values);
 223   AliDielectronVarManager::Fill(InputEvent(),valuesMC);
 224
 225   Bool_t hasMC=AliDielectronMC::Instance()->HasMC();
 226   if (hasMC) {
 227     if (AliDielectronMC::Instance()->ConnectMCEvent())
 228       AliDielectronVarManager::Fill(AliDielectronMC::Instance()->GetMCEvent(),valuesMC);
 229   }
 230
 231   AliDielectronHistos *h=fDielectron->GetHistoManager();
 232     if (h){
 233       if (h->GetHistogramList()->FindObject("Event_noCuts"))
 234         h->FillClass("Event_noCuts",AliDielectronVarManager::kNMaxValues,values);
 235       if (hasMC && h->GetHistogramList()->FindObject("MCEvent_noCuts"))
 236         h->FillClass("Event_noCuts",AliDielectronVarManager::kNMaxValues,valuesMC);
 237     }
 238
 239   //event filter
 240   if (fEventFilter) {
 241   if (!fEventFilter->IsSelected(InputEvent())) return;
 242   }
 243   fEventStat->Fill(kFilteredEvents);
 244
 245   //pileup
 246   if (fRejectPileup){
 247   if (InputEvent()->IsPileupFromSPD(3,0.8,3.,2.,5.)) return;
 248   }
 249   fEventStat->Fill(kPileupEvents);
 250
 251   //bz for AliKF
 252   Double_t bz = InputEvent()->GetMagneticField();
 253   AliKFParticle::SetField( bz );
 254
 255   AliDielectronPID::SetCorrVal((Double_t)InputEvent()->GetRunNumber());
 256
 257   fDielectron->Process(InputEvent());
 258
 259   Bool_t hasCand = kFALSE;
 260   if(fStoreLikeSign) hasCand = (fDielectron->HasCandidates() || fDielectron->HasCandidatesLikeSign());
 261   else hasCand = (fDielectron->HasCandidates());
 262
 263   if(fStoreRotatedPairs) hasCand = (hasCand || fDielectron->HasCandidatesTR());
 264
 265   if(fStoreEventsWithSingleTracks) hasCand = (hasCand || fDielectron->GetTrackArray(0) || fDielectron->GetTrackArray(1));
 266
 267
 268   AliAODHandler *aodH=(AliAODHandler*)((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler());
 269   AliAODExtension *extDielectron = aodH->GetFilteredAOD("AliAOD.Dielectron.root");
 270   if(hasCand){
 271     AliAODEvent *aod = aodH->GetAOD();
 272
 273     // reset bit for all tracks
 274     if(isAOD){
 275     for(Int_t it=0;it<aod->GetNumberOfTracks();it++){
 276         aod->GetTrack(it)->ResetBit(kIsReferenced);  aod->GetTrack(it)->SetUniqueID(0);
 277         }
 278     }
 279
 280     //replace the references of the legs with the AOD references
 281     TObjArray *obj = 0x0;
 282     for(Int_t i=0; i < 11; i++ ){
 283       obj = (TObjArray*)((*(fDielectron->GetPairArraysPointer()))->UncheckedAt(i));
 284       if(!obj) continue;
 285       for(int j=0;j<obj->GetEntriesFast();j++){
 286         AliDielectronPair *pairObj = (AliDielectronPair*)obj->UncheckedAt(j);
 287         Int_t id1 = ((AliVTrack*)pairObj->GetFirstDaughter())->GetID();
 288         Int_t id2 = ((AliVTrack*)pairObj->GetSecondDaughter())->GetID();
 289
 290         for(Int_t it=0;it<aod->GetNumberOfTracks();it++){
 291           if(aod->GetTrack(it)->GetID() == id1) pairObj->SetRefFirstDaughter(aod->GetTrack(it));
 292           if(aod->GetTrack(it)->GetID() == id2) pairObj->SetRefSecondDaughter(aod->GetTrack(it));
 293         }
 294       }
 295     }
 296
 297     extDielectron->SelectEvent();
 298     Int_t ncandidates=fDielectron->GetPairArray(1)->GetEntriesFast();
 299     if (ncandidates==1) fEventStat->Fill((kNbinsEvent));
 300     else if (ncandidates>1) fEventStat->Fill((kNbinsEvent+1));
 301
 302     //see if dielectron candidate branch exists, if not create is
 303     TTree *t=extDielectron->GetTree();
 304
 305     if(!t->GetListOfBranches()->GetEntries() && isAOD)
 306       t->Branch(aod->GetList());
 307
 308     if (!t->GetBranch("dielectrons"))
 309       t->Bronch("dielectrons","TObjArray",fDielectron->GetPairArraysPointer());
 310
 311       // store positive and negative tracks
 312       if(fCreateNanoAOD && isAOD){
 313       Int_t nTracks = (fDielectron->GetTrackArray(0))->GetEntries() + (fDielectron->GetTrackArray(1))->GetEntries();
 314        AliAODEvent *nanoEv = extDielectron->GetAOD();
 315        nanoEv->GetTracks()->Clear();
 316        nanoEv->GetVertices()->Clear();
 317        nanoEv->GetCaloClusters()->Clear();
 318
 319        AliAODVertex* tmp = ((static_cast<AliAODEvent*>(InputEvent()))->GetPrimaryVertex())->CloneWithoutRefs();
 320        nanoEv->AddVertex(tmp);
 321        AliAODVertex* tmpSpd = ((static_cast<AliAODEvent*>(InputEvent()))->GetPrimaryVertexSPD())->CloneWithoutRefs();
 322        nanoEv->AddVertex(tmpSpd);
 323        nanoEv->GetVertex(0)->SetNContributors((static_cast<AliAODEvent*>(InputEvent()))->GetPrimaryVertex()->GetNContributors());
 324        nanoEv->GetVertex(1)->SetNContributors((static_cast<AliAODEvent*>(InputEvent()))->GetPrimaryVertexSPD()->GetNContributors());
 325        // set event plane
 326        nanoEv->GetHeader()->SetEventplane((static_cast<AliAODEvent*>(InputEvent()))->GetHeader()->GetEventplaneP());
 327        nanoEv->GetHeader()->ResetEventplanePointer();
 328        // set multiplicity
 329        nanoEv->GetHeader()->SetRefMultiplicity((Int_t)values[AliDielectronVarManager::kNTrk]);
 330        nanoEv->GetHeader()->SetRefMultiplicityPos((Int_t)values[AliDielectronVarManager::kNacc]);
 331        //nanoEv->GetHeader()->SetRefMultiplicityNeg(values[AliDielectronVarManager::kMatchEffITSTPC]);
 332
 333          for(int kj=0; kj<(fDielectron->GetTrackArray(0))->GetEntries(); kj++){
 334          Int_t posit = nanoEv->AddTrack((AliAODTrack*)fDielectron->GetTrackArray(0)->At(kj));
 335          Int_t posVtx = nanoEv->AddVertex(((AliAODTrack*)fDielectron->GetTrackArray(0)->At(kj))->GetProdVertex());
 336          nanoEv->GetVertex(posVtx)->ResetBit(kIsReferenced);
 337          nanoEv->GetVertex(posVtx)->SetUniqueID(0);
 338          nanoEv->GetVertex(posVtx)->RemoveDaughters();
 339          nanoEv->GetTrack(posit)->ResetBit(kIsReferenced);
 340          nanoEv->GetTrack(posit)->SetUniqueID(0);
 341          // calo cluster
 342          Int_t caloIndex = ((AliAODTrack*)fDielectron->GetTrackArray(0)->At(kj))->GetEMCALcluster();
 343          if(caloIndex > 0 && (static_cast<AliAODEvent*>(InputEvent()))->GetCaloCluster(caloIndex)){
 344          Int_t posCaloCls = nanoEv->AddCaloCluster(static_cast<AliAODEvent*>(InputEvent())->GetCaloCluster(caloIndex));
 345          nanoEv->GetTrack(posit)->SetEMCALcluster(posCaloCls);
 346          AliAODCaloCluster *clCls = nanoEv->GetCaloCluster(posCaloCls);
 347          for(int u=0; u<clCls->GetNTracksMatched(); u++) clCls->RemoveTrackMatched(clCls->GetTrackMatched(u));
 348          nanoEv->GetCaloCluster(posCaloCls)->AddTrackMatched((AliAODTrack*)nanoEv->GetTrack(posit));
 349          }
 350          // set references for vtx
 351          nanoEv->GetTrack(posit)->SetProdVertex(nanoEv->GetVertex(posVtx));
 352          }
 353
 354          for(int kj=0; kj<(fDielectron->GetTrackArray(1))->GetEntries(); kj++){
 355          Int_t negat = nanoEv->AddTrack((AliAODTrack*)fDielectron->GetTrackArray(1)->At(kj));
 356          Int_t negVtx = nanoEv->AddVertex(((AliAODTrack*)fDielectron->GetTrackArray(1)->At(kj))->GetProdVertex());
 357          nanoEv->GetVertex(negVtx)->ResetBit(kIsReferenced);
 358          nanoEv->GetVertex(negVtx)->SetUniqueID(0);
 359          nanoEv->GetVertex(negVtx)->RemoveDaughters();
 360          nanoEv->GetTrack(negat)->ResetBit(kIsReferenced);
 361          nanoEv->GetTrack(negat)->SetUniqueID(0);
 362          // calo cluster
 363          Int_t caloIndex = ((AliAODTrack*)fDielectron->GetTrackArray(1)->At(kj))->GetEMCALcluster();
 364          if(caloIndex > 0 && (static_cast<AliAODEvent*>(InputEvent()))->GetCaloCluster(caloIndex)){
 365          Int_t negCaloCls = nanoEv->AddCaloCluster(static_cast<AliAODEvent*>(InputEvent())->GetCaloCluster(caloIndex));
 366          nanoEv->GetTrack(negat)->SetEMCALcluster(negCaloCls);
 367          AliAODCaloCluster *clCls = nanoEv->GetCaloCluster(negCaloCls);
 368          for(int u=0; u<clCls->GetNTracksMatched(); u++) clCls->RemoveTrackMatched(clCls->GetTrackMatched(u));
 369          nanoEv->GetCaloCluster(negCaloCls)->AddTrackMatched((AliAODTrack*)nanoEv->GetTrack(negat));
 370          }
 371          nanoEv->GetTrack(negat)->SetProdVertex(nanoEv->GetVertex(negVtx));
 372          }
 373         delete tmp; delete tmpSpd;
 374         nanoEv->GetTracks()->Expand(nTracks);
 375         nanoEv->GetVertices()->Expand(nTracks+2);
 376         nanoEv->GetCaloClusters()->Expand(nanoEv->GetNumberOfCaloClusters());
 377
 378     }
 379     if(isAOD) t->Fill();
 380   }
 381
 382   if(fCreateNanoAOD && isAOD && (!hasCand) &&  fStoreHeader)
 383    {
 384    // set event plane
 385    extDielectron->GetAOD()->GetHeader()->SetEventplane((static_cast<AliAODEvent*>(InputEvent()))->GetHeader()->GetEventplaneP());
 386    extDielectron->GetAOD()->GetHeader()->ResetEventplanePointer();
 387    extDielectron->GetTree()->Fill(); // fill header for all events without tracks
 388    }
 389
 390   PostData(1, const_cast<THashList*>(fDielectron->GetHistogramList()));
 391   PostData(2,fEventStat);
 392   return;
 393 }
 394
 395