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