[u/mrichter/AliRoot.git] / PWG0 / AliPhysicsSelection.cxx

/* $Id: AliPhysicsSelection.cxx 35782 2009-10-22 11:54:31Z jgrosseo $ */

/**************************************************************************
 * Copyright(c) 1998-2009, ALICE Experiment at CERN, All rights reserved. *
 *                                                                        *
 * Author: The ALICE Off-line Project.                                    *
 * Contributors are mentioned in the code where appropriate.              *
 *                                                                        *
 * Permission to use, copy, modify and distribute this software and its   *
 * documentation strictly for non-commercial purposes is hereby granted   *
 * without fee, provided that the above copyright notice appears in all   *
 * copies and that both the copyright notice and this permission notice   *
 * appear in the supporting documentation. The authors make no claims     *
 * about the suitability of this software for any purpose. It is          *
 * provided "as is" without express or implied warranty.                  *
 **************************************************************************/

//-------------------------------------------------------------------------
//                      Implementation of   Class AliPhysicsSelection
// This class selects collision candidates from data runs, applying selection cuts on triggers 
// and background rejection based on the content of the ESD
//
// Usage:
//
// Create the object and initialize it with the correct run number:
//   fPhysicsSelection = new AliPhysicsSelection;
//   fPhysicsSelection->Initialize(104160);
//
// To check if an event is a collision candidate, use:
//   fPhysicsSelection->IsCollisionCandidate(fESD)
//
// After processing save the resulting histograms to a file with (a folder physics_selection 
//   will be created that contains the histograms):
//   fPhysicsSelection->SaveHistograms("physics_selection")
//
// To print statistics after processing use:
//   fPhysicsSelection->Print();
//
//   Origin: Jan Fiete Grosse-Oetringhaus, CERN
//-------------------------------------------------------------------------

#include <Riostream.h>
#include <TH1F.h>
#include <TH2F.h>
#include <TList.h>
#include <TIterator.h>
#include <TDirectory.h>
#include <TObjArray.h>

#include <AliPhysicsSelection.h>

#include <AliTriggerAnalysis.h>
#include <AliLog.h>

#include <AliESDEvent.h>

ClassImp(AliPhysicsSelection)

AliPhysicsSelection::AliPhysicsSelection() :
  AliAnalysisCuts("AliPhysicsSelection", "AliPhysicsSelection"),
  fCurrentRun(-1),
  fCollTrigClasses(),
  fBGTrigClasses(),
  fTriggerAnalysis(),
  fBackgroundIdentification(0),
  fHistStatistics(0),
  fHistBunchCrossing(0)
{
  // constructor
  
  fCollTrigClasses.SetOwner(1);
  fBGTrigClasses.SetOwner(1);
  fTriggerAnalysis.SetOwner(1);
  
  AliLog::SetClassDebugLevel("AliPhysicsSelection", AliLog::kWarning);
}
    
AliPhysicsSelection::~AliPhysicsSelection()
{
  // destructor
  
  fCollTrigClasses.Delete();
  fBGTrigClasses.Delete();
  fTriggerAnalysis.Delete();

  if (fHistStatistics)
  {
    delete fHistStatistics;
    fHistStatistics = 0;
  }
  
  if (fHistBunchCrossing)
  {
    delete fHistBunchCrossing;
    fHistBunchCrossing = 0;
  }
}

Bool_t AliPhysicsSelection::CheckTriggerClass(const AliESDEvent* aEsd, const char* trigger) const
{
  // checks if the given trigger class(es) are found for the current event
  // format of trigger: +TRIGGER1 -TRIGGER2
  //   requires TRIGGER1 and rejects TRIGGER2
  
  TString str(trigger);
  TObjArray* tokens = str.Tokenize(" ");
  
  for (Int_t i=0; i < tokens->GetEntries(); i++)
  {
    TString str2(((TObjString*) tokens->At(i))->String());
    
    if (str2[0] != '+' && str2[0] != '-')
      AliFatal(Form("Invalid trigger syntax: %s", trigger));
      
    Bool_t flag = (str2[0] == '+');
    
    str2.Remove(0, 1);
    
    if (flag && !aEsd->IsTriggerClassFired(str2))
    {
      AliDebug(AliLog::kDebug, Form("Rejecting event because trigger class %s is not present", str2.Data()));
      delete tokens;
      return kFALSE;
    }
    if (!flag && aEsd->IsTriggerClassFired(str2))
    {
      AliDebug(AliLog::kDebug, Form("Rejecting event because trigger class %s is present", str2.Data()));
      delete tokens;
      return kFALSE;
    }
  }
  
  delete tokens;
  return kTRUE;
}
    
Bool_t AliPhysicsSelection::IsCollisionCandidate(const AliESDEvent* aEsd)
{
  // checks if the given event is a collision candidate
  
  const AliESDHeader* esdHeader = aEsd->GetHeader();
  if (!esdHeader)
  {
    AliError("ESD Header could not be retrieved");
    return kFALSE;
  }
  
  // check event type (should be PHYSICS = 7)
  if (esdHeader->GetEventType() != 7)
    return kFALSE;  
    
  if (fCurrentRun != aEsd->GetRunNumber())
    if (!Initialize(aEsd->GetRunNumber()))
      AliFatal(Form("Could not initialize for run %d", aEsd->GetRunNumber()));
    
  Bool_t accept = kFALSE;
    
  Int_t count = fCollTrigClasses.GetEntries() + fBGTrigClasses.GetEntries();
  for (Int_t i=0; i < count; i++)
  {
    const char* triggerClass = 0;
    if (i < fCollTrigClasses.GetEntries())
      triggerClass = ((TObjString*) fCollTrigClasses.At(i))->String();
    else
      triggerClass = ((TObjString*) fBGTrigClasses.At(i - fCollTrigClasses.GetEntries()))->String();
  
    AliDebug(AliLog::kDebug, Form("Processing trigger class %s", triggerClass));
  
    AliTriggerAnalysis* triggerAnalysis = static_cast<AliTriggerAnalysis*> (fTriggerAnalysis.At(i));
  
    triggerAnalysis->FillTriggerClasses(aEsd);
    
    if (CheckTriggerClass(aEsd, triggerClass))
    {
      triggerAnalysis->FillHistograms(aEsd);
  
      fHistStatistics->Fill(1, i);
    
      Int_t fastOR = triggerAnalysis->SPDFiredChips(aEsd, 0);
      Bool_t v0A = triggerAnalysis->IsOfflineTriggerFired(aEsd, AliTriggerAnalysis::kV0A);
      Bool_t v0C = triggerAnalysis->IsOfflineTriggerFired(aEsd, AliTriggerAnalysis::kV0C);
      Bool_t v0BG = triggerAnalysis->IsOfflineTriggerFired(aEsd, AliTriggerAnalysis::kV0ABG) || triggerAnalysis->IsOfflineTriggerFired(aEsd, AliTriggerAnalysis::kV0CBG);
    
      if (fastOR > 0)
        fHistStatistics->Fill(2, i);
      if (fastOR > 1)
        fHistStatistics->Fill(3, i);
        
      if (v0A)
        fHistStatistics->Fill(4, i);
      if (v0C)
        fHistStatistics->Fill(5, i);
      if (v0BG)
        fHistStatistics->Fill(6, i);
        
      if ((fastOR > 0 || v0A || v0C) && !v0BG)
        fHistStatistics->Fill(7, i);
    
      if (fastOR > 0 && (v0A || v0C) && !v0BG)
        fHistStatistics->Fill(8, i);
  
      if (v0A && v0C && !v0BG)
        fHistStatistics->Fill(9, i);
        
      if (fastOR > 1 || (fastOR > 0 && (v0A || v0C)) || (v0A && v0C))
      {
        if (!v0BG)
        {
          fHistStatistics->Fill(10, i);
      
          if (fBackgroundIdentification && !fBackgroundIdentification->IsSelected(const_cast<AliESDEvent*> (aEsd)))
          {
            AliDebug(AliLog::kDebug, "Rejecting event because of background identification");
            fHistStatistics->Fill(11, i);
          }
          else
          {
            AliDebug(AliLog::kDebug, "Accepted event for histograms");
            
            fHistStatistics->Fill(12, i);
            fHistBunchCrossing->Fill(aEsd->GetBunchCrossNumber(), i);
            if (i < fCollTrigClasses.GetEntries())
              accept = kTRUE;
          }
        }
        else
          AliDebug(AliLog::kDebug, "Rejecting event because of V0 BG flag");
      }
      else
        AliDebug(AliLog::kDebug, "Rejecting event because trigger condition is not fulfilled");
    }
  }
 
  if (accept)
    AliDebug(AliLog::kDebug, "Accepted event as collision candidate");
  
  return accept;
}
    
Bool_t AliPhysicsSelection::Initialize(UInt_t runNumber)
{
  // initializes the object for the given run
  // TODO having the run number here and parameters hardcoded is clearly temporary, a way needs to be found to have a CDB-like configuration also for analysis
  
  if (fCurrentRun != -1)
    AliFatal("Processing several runs is not supported, yet");
  
  AliInfo(Form("Initializing for run %d", runNumber));
  fCurrentRun = runNumber;
  
  fTriggerAnalysis.Delete();
  fCollTrigClasses.Delete();
  fBGTrigClasses.Delete();
  
  fCollTrigClasses.Add(new TObjString("+CINT1B-ABCE-NOPF-ALL"));
  fBGTrigClasses.Add(new TObjString("+CINT1A-ABCE-NOPF-ALL"));
  fBGTrigClasses.Add(new TObjString("+CINT1C-ABCE-NOPF-ALL"));
  fBGTrigClasses.Add(new TObjString("+CINT1-E-NOPF-ALL"));
  
  Int_t count = fCollTrigClasses.GetEntries() + fBGTrigClasses.GetEntries();
  
  for (Int_t i=0; i<count; i++)
  {
    AliTriggerAnalysis* triggerAnalysis = new AliTriggerAnalysis;
    triggerAnalysis->EnableHistograms();
    triggerAnalysis->SetSPDGFOThreshhold(1);
    triggerAnalysis->SetV0TimeOffset(0);
    
    switch (runNumber)
    {
      case 104316:
      case 104320:
      case 104321: //OK
      case 104439:
        triggerAnalysis->SetV0TimeOffset(7.5);
        break;
    }
  
    fTriggerAnalysis.Add(triggerAnalysis);
  }
      
  if (fHistStatistics)
    delete fHistStatistics;

  fHistStatistics = new TH2F("fHistStatistics", "fHistStatistics;;", 12, 0.5, 12.5, count, -0.5, -0.5 + count);
    
  Int_t n = 1;
  fHistStatistics->GetXaxis()->SetBinLabel(n++, "Correct trigger class(es)");
  fHistStatistics->GetXaxis()->SetBinLabel(n++, "FO >= 1");
  fHistStatistics->GetXaxis()->SetBinLabel(n++, "FO >= 2");
  fHistStatistics->GetXaxis()->SetBinLabel(n++, "V0A");
  fHistStatistics->GetXaxis()->SetBinLabel(n++, "V0C");
  fHistStatistics->GetXaxis()->SetBinLabel(n++, "V0 BG");
  fHistStatistics->GetXaxis()->SetBinLabel(n++, "(FO >= 1 | V0A | VOC) & !V0 BG");
  fHistStatistics->GetXaxis()->SetBinLabel(n++, "FO >= 1 & (V0A | VOC) & !V0 BG");
  fHistStatistics->GetXaxis()->SetBinLabel(n++, "V0A & VOC & !V0 BG");
  fHistStatistics->GetXaxis()->SetBinLabel(n++, "(FO >= 2 | (FO >= 1 & (V0A | VOC)) | (V0A & VOC)) & !V0 BG");
  fHistStatistics->GetXaxis()->SetBinLabel(n++, "Background identification");
  fHistStatistics->GetXaxis()->SetBinLabel(n++, "Accepted");
  
  n = 1;
  for (Int_t i=0; i < fCollTrigClasses.GetEntries(); i++)
    fHistStatistics->GetYaxis()->SetBinLabel(n++, ((TObjString*) fCollTrigClasses.At(i))->String());
  for (Int_t i=0; i < fBGTrigClasses.GetEntries(); i++)
    fHistStatistics->GetYaxis()->SetBinLabel(n++, ((TObjString*) fBGTrigClasses.At(i))->String());
  
  if (fHistBunchCrossing)
    delete fHistBunchCrossing;

  fHistBunchCrossing = new TH2F("fHistBunchCrossing", "fHistBunchCrossing;bunch crossing number;", 4000, -0.5, 3999.5,  count, -0.5, -0.5 + count);
    
  return kTRUE;
}

void AliPhysicsSelection::Print(Option_t* /* option */) const
{
  // print the configuration
  
  Printf("Configuration:");
  
  Printf("Collision trigger classes:");
  for (Int_t i=0; i < fCollTrigClasses.GetEntries(); i++)
    Printf("%s", ((TObjString*) fCollTrigClasses.At(i))->String().Data());
  
  Printf("Background trigger classes:");
  for (Int_t i=0; i < fBGTrigClasses.GetEntries(); i++)
    Printf("%s", ((TObjString*) fBGTrigClasses.At(i))->String().Data());

  AliTriggerAnalysis* triggerAnalysis = dynamic_cast<AliTriggerAnalysis*> (fTriggerAnalysis.At(0));
  
  if (triggerAnalysis)
  {
    if (triggerAnalysis->GetV0TimeOffset() > 0)
      Printf("V0 time offset active: %.2f ns", triggerAnalysis->GetV0TimeOffset());
    
    Printf("\nTotal available events:");
    
    triggerAnalysis->PrintTriggerClasses();
  }
  
  Printf("\nSelection statistics for first collision trigger:");
  
  Printf("Total events with correct trigger class: %d", (Int_t) fHistStatistics->GetBinContent(1, 1));
  Printf("Selected collision candidates: %d", (Int_t) fHistStatistics->GetBinContent(12, 1));
}

Long64_t AliPhysicsSelection::Merge(TCollection* list)
{
  // Merge a list of AliMultiplicityCorrection objects with this (needed for
  // PROOF).
  // Returns the number of merged objects (including this).

  if (!list)
    return 0;

  if (list->IsEmpty())
    return 1;

  TIterator* iter = list->MakeIterator();
  TObject* obj;

  // collections of all histograms
  const Int_t nHists = 9;
  TList collections[nHists];

  Int_t count = 0;
  while ((obj = iter->Next())) {

    AliPhysicsSelection* entry = dynamic_cast<AliPhysicsSelection*> (obj);
    if (entry == 0) 
      continue;

    Int_t n = 0;
    collections[n++].Add(&(entry->fTriggerAnalysis));
    collections[n++].Add(entry->fHistStatistics);
    collections[n++].Add(entry->fHistBunchCrossing);
    if (entry->fBackgroundIdentification)
      collections[n++].Add(entry->fBackgroundIdentification);

    count++;
  }

  Int_t n = 0;
  fTriggerAnalysis.Merge(&collections[n++]);
  fHistStatistics->Merge(&collections[n++]);
  fHistBunchCrossing->Merge(&collections[n++]);
  if (fBackgroundIdentification)
    fBackgroundIdentification->Merge(&collections[n++]);
  
  delete iter;

  return count+1;
}

void AliPhysicsSelection::SaveHistograms(const char* folder) const
{
  // write histograms to current directory
  
  if (!fHistStatistics)
    return;
    
  if (folder)
  {
    gDirectory->mkdir(folder);
    gDirectory->cd(folder);
  }
  
  fHistStatistics->Write();
  fHistBunchCrossing->Write();
  
  Int_t count = fCollTrigClasses.GetEntries() + fBGTrigClasses.GetEntries();
  for (Int_t i=0; i < count; i++)
  {
    TString triggerClass = "trigger_histograms_";
    if (i < fCollTrigClasses.GetEntries())
      triggerClass += ((TObjString*) fCollTrigClasses.At(i))->String();
    else
      triggerClass += ((TObjString*) fBGTrigClasses.At(i - fCollTrigClasses.GetEntries()))->String();
  
    gDirectory->mkdir(triggerClass);
    gDirectory->cd(triggerClass);
  
    static_cast<AliTriggerAnalysis*> (fTriggerAnalysis.At(i))->SaveHistograms();
    
    gDirectory->cd("..");
  }
 
  if (fBackgroundIdentification)
  {
    gDirectory->mkdir("background_identification");
    gDirectory->cd("background_identification");
      
    fBackgroundIdentification->GetOutput()->Write();
      
    gDirectory->cd("..");
  }
  
  if (folder)
    gDirectory->cd("..");
}
Commit	Line	Data
61899827	1	/* $Id: AliPhysicsSelection.cxx 35782 2009-10-22 11:54:31Z jgrosseo $ */
	2
	3	/**************************************************************************
	4	* Copyright(c) 1998-2009, ALICE Experiment at CERN, All rights reserved. *
	5	* *
	6	* Author: The ALICE Off-line Project. *
	7	* Contributors are mentioned in the code where appropriate. *
	8	* *
	9	* Permission to use, copy, modify and distribute this software and its *
	10	* documentation strictly for non-commercial purposes is hereby granted *
	11	* without fee, provided that the above copyright notice appears in all *
	12	* copies and that both the copyright notice and this permission notice *
	13	* appear in the supporting documentation. The authors make no claims *
	14	* about the suitability of this software for any purpose. It is *
	15	* provided "as is" without express or implied warranty. *
	16	**************************************************************************/
	17
	18	//-------------------------------------------------------------------------
	19	// Implementation of Class AliPhysicsSelection
528640ed	20	// This class selects collision candidates from data runs, applying selection cuts on triggers
	21	// and background rejection based on the content of the ESD
	22	//
	23	// Usage:
	24	//
	25	// Create the object and initialize it with the correct run number:
	26	// fPhysicsSelection = new AliPhysicsSelection;
	27	// fPhysicsSelection->Initialize(104160);
	28	//
	29	// To check if an event is a collision candidate, use:
	30	// fPhysicsSelection->IsCollisionCandidate(fESD)
	31	//
	32	// After processing save the resulting histograms to a file with (a folder physics_selection
	33	// will be created that contains the histograms):
	34	// fPhysicsSelection->SaveHistograms("physics_selection")
	35	//
	36	// To print statistics after processing use:
	37	// fPhysicsSelection->Print();
	38	//
61899827	39	// Origin: Jan Fiete Grosse-Oetringhaus, CERN
	40	//-------------------------------------------------------------------------
	41
	42	#include <Riostream.h>
	43	#include <TH1F.h>
	44	#include <TH2F.h>
	45	#include <TList.h>
	46	#include <TIterator.h>
	47	#include <TDirectory.h>
296dd262	48	#include <TObjArray.h>
61899827	49
	50	#include <AliPhysicsSelection.h>
	51
	52	#include <AliTriggerAnalysis.h>
	53	#include <AliLog.h>
	54
	55	#include <AliESDEvent.h>
	56
	57	ClassImp(AliPhysicsSelection)
	58
	59	AliPhysicsSelection::AliPhysicsSelection() :
296dd262	60	AliAnalysisCuts("AliPhysicsSelection", "AliPhysicsSelection"),
	61	fCurrentRun(-1),
	62	fCollTrigClasses(),
	63	fBGTrigClasses(),
	64	fTriggerAnalysis(),
	65	fBackgroundIdentification(0),
61899827	66	fHistStatistics(0),
	67	fHistBunchCrossing(0)
	68	{
	69	// constructor
	70
296dd262	71	fCollTrigClasses.SetOwner(1);
	72	fBGTrigClasses.SetOwner(1);
	73	fTriggerAnalysis.SetOwner(1);
	74
61899827	75	AliLog::SetClassDebugLevel("AliPhysicsSelection", AliLog::kWarning);
	76	}
	77
	78	AliPhysicsSelection::~AliPhysicsSelection()
	79	{
	80	// destructor
	81
296dd262	82	fCollTrigClasses.Delete();
	83	fBGTrigClasses.Delete();
	84	fTriggerAnalysis.Delete();
61899827	85
	86	if (fHistStatistics)
	87	{
	88	delete fHistStatistics;
	89	fHistStatistics = 0;
	90	}
	91
	92	if (fHistBunchCrossing)
	93	{
	94	delete fHistBunchCrossing;
	95	fHistBunchCrossing = 0;
	96	}
	97	}
296dd262	98
	99	Bool_t AliPhysicsSelection::CheckTriggerClass(const AliESDEvent* aEsd, const char* trigger) const
	100	{
	101	// checks if the given trigger class(es) are found for the current event
	102	// format of trigger: +TRIGGER1 -TRIGGER2
	103	// requires TRIGGER1 and rejects TRIGGER2
	104
	105	TString str(trigger);
	106	TObjArray* tokens = str.Tokenize(" ");
	107
	108	for (Int_t i=0; i < tokens->GetEntries(); i++)
	109	{
	110	TString str2(((TObjString*) tokens->At(i))->String());
	111
	112	if (str2[0] != '+' && str2[0] != '-')
	113	AliFatal(Form("Invalid trigger syntax: %s", trigger));
	114
	115	Bool_t flag = (str2[0] == '+');
	116
	117	str2.Remove(0, 1);
	118
	119	if (flag && !aEsd->IsTriggerClassFired(str2))
	120	{
	121	AliDebug(AliLog::kDebug, Form("Rejecting event because trigger class %s is not present", str2.Data()));
	122	delete tokens;
	123	return kFALSE;
	124	}
	125	if (!flag && aEsd->IsTriggerClassFired(str2))
	126	{
	127	AliDebug(AliLog::kDebug, Form("Rejecting event because trigger class %s is present", str2.Data()));
	128	delete tokens;
	129	return kFALSE;
	130	}
	131	}
	132
	133	delete tokens;
	134	return kTRUE;
	135	}
61899827	136
	137	Bool_t AliPhysicsSelection::IsCollisionCandidate(const AliESDEvent* aEsd)
	138	{
	139	// checks if the given event is a collision candidate
	140
61899827	141	const AliESDHeader* esdHeader = aEsd->GetHeader();
	142	if (!esdHeader)
	143	{
	144	AliError("ESD Header could not be retrieved");
	145	return kFALSE;
	146	}
	147
	148	// check event type (should be PHYSICS = 7)
	149	if (esdHeader->GetEventType() != 7)
	150	return kFALSE;
61899827	151
296dd262	152	if (fCurrentRun != aEsd->GetRunNumber())
	153	if (!Initialize(aEsd->GetRunNumber()))
	154	AliFatal(Form("Could not initialize for run %d", aEsd->GetRunNumber()));
	155
	156	Bool_t accept = kFALSE;
	157
	158	Int_t count = fCollTrigClasses.GetEntries() + fBGTrigClasses.GetEntries();
	159	for (Int_t i=0; i < count; i++)
61899827	160	{
296dd262	161	const char* triggerClass = 0;
	162	if (i < fCollTrigClasses.GetEntries())
	163	triggerClass = ((TObjString*) fCollTrigClasses.At(i))->String();
	164	else
	165	triggerClass = ((TObjString*) fBGTrigClasses.At(i - fCollTrigClasses.GetEntries()))->String();
61899827	166
296dd262	167	AliDebug(AliLog::kDebug, Form("Processing trigger class %s", triggerClass));
61899827	168
296dd262	169	AliTriggerAnalysis* triggerAnalysis = static_cast<AliTriggerAnalysis*> (fTriggerAnalysis.At(i));
61899827	170
296dd262	171	triggerAnalysis->FillTriggerClasses(aEsd);
61899827	172
296dd262	173	if (CheckTriggerClass(aEsd, triggerClass))
	174	{
	175	triggerAnalysis->FillHistograms(aEsd);
	176
	177	fHistStatistics->Fill(1, i);
61899827	178
296dd262	179	Int_t fastOR = triggerAnalysis->SPDFiredChips(aEsd, 0);
	180	Bool_t v0A = triggerAnalysis->IsOfflineTriggerFired(aEsd, AliTriggerAnalysis::kV0A);
	181	Bool_t v0C = triggerAnalysis->IsOfflineTriggerFired(aEsd, AliTriggerAnalysis::kV0C);
	182	Bool_t v0BG = triggerAnalysis->IsOfflineTriggerFired(aEsd, AliTriggerAnalysis::kV0ABG) \|\| triggerAnalysis->IsOfflineTriggerFired(aEsd, AliTriggerAnalysis::kV0CBG);
61899827	183
296dd262	184	if (fastOR > 0)
	185	fHistStatistics->Fill(2, i);
	186	if (fastOR > 1)
	187	fHistStatistics->Fill(3, i);
	188
	189	if (v0A)
	190	fHistStatistics->Fill(4, i);
	191	if (v0C)
	192	fHistStatistics->Fill(5, i);
	193	if (v0BG)
	194	fHistStatistics->Fill(6, i);
	195
	196	if ((fastOR > 0 \|\| v0A \|\| v0C) && !v0BG)
	197	fHistStatistics->Fill(7, i);
	198
	199	if (fastOR > 0 && (v0A \|\| v0C) && !v0BG)
	200	fHistStatistics->Fill(8, i);
	201
	202	if (v0A && v0C && !v0BG)
	203	fHistStatistics->Fill(9, i);
	204
	205	if (fastOR > 1 \|\| (fastOR > 0 && (v0A \|\| v0C)) \|\| (v0A && v0C))
	206	{
	207	if (!v0BG)
	208	{
	209	fHistStatistics->Fill(10, i);
61899827	210
296dd262	211	if (fBackgroundIdentification && !fBackgroundIdentification->IsSelected(const_cast<AliESDEvent*> (aEsd)))
	212	{
	213	AliDebug(AliLog::kDebug, "Rejecting event because of background identification");
	214	fHistStatistics->Fill(11, i);
	215	}
	216	else
	217	{
	218	AliDebug(AliLog::kDebug, "Accepted event for histograms");
	219
	220	fHistStatistics->Fill(12, i);
	221	fHistBunchCrossing->Fill(aEsd->GetBunchCrossNumber(), i);
52d4048c	222	if (i < fCollTrigClasses.GetEntries())
296dd262	223	accept = kTRUE;
	224	}
	225	}
	226	else
	227	AliDebug(AliLog::kDebug, "Rejecting event because of V0 BG flag");
	228	}
	229	else
	230	AliDebug(AliLog::kDebug, "Rejecting event because trigger condition is not fulfilled");
	231	}
	232	}
	233
	234	if (accept)
	235	AliDebug(AliLog::kDebug, "Accepted event as collision candidate");
61899827	236
296dd262	237	return accept;
61899827	238	}
	239
	240	Bool_t AliPhysicsSelection::Initialize(UInt_t runNumber)
	241	{
	242	// initializes the object for the given run
	243	// TODO having the run number here and parameters hardcoded is clearly temporary, a way needs to be found to have a CDB-like configuration also for analysis
	244
296dd262	245	if (fCurrentRun != -1)
	246	AliFatal("Processing several runs is not supported, yet");
	247
61899827	248	AliInfo(Form("Initializing for run %d", runNumber));
296dd262	249	fCurrentRun = runNumber;
61899827	250
296dd262	251	fTriggerAnalysis.Delete();
	252	fCollTrigClasses.Delete();
	253	fBGTrigClasses.Delete();
61899827	254
296dd262	255	fCollTrigClasses.Add(new TObjString("+CINT1B-ABCE-NOPF-ALL"));
	256	fBGTrigClasses.Add(new TObjString("+CINT1A-ABCE-NOPF-ALL"));
	257	fBGTrigClasses.Add(new TObjString("+CINT1C-ABCE-NOPF-ALL"));
	258	fBGTrigClasses.Add(new TObjString("+CINT1-E-NOPF-ALL"));
61899827	259
296dd262	260	Int_t count = fCollTrigClasses.GetEntries() + fBGTrigClasses.GetEntries();
	261
	262	for (Int_t i=0; i<count; i++)
61899827	263	{
296dd262	264	AliTriggerAnalysis* triggerAnalysis = new AliTriggerAnalysis;
	265	triggerAnalysis->EnableHistograms();
	266	triggerAnalysis->SetSPDGFOThreshhold(1);
	267	triggerAnalysis->SetV0TimeOffset(0);
61899827	268
296dd262	269	switch (runNumber)
	270	{
	271	case 104316:
	272	case 104320:
	273	case 104321: //OK
	274	case 104439:
	275	triggerAnalysis->SetV0TimeOffset(7.5);
	276	break;
	277	}
61899827	278
296dd262	279	fTriggerAnalysis.Add(triggerAnalysis);
61899827	280	}
296dd262	281
	282	if (fHistStatistics)
	283	delete fHistStatistics;
	284
	285	fHistStatistics = new TH2F("fHistStatistics", "fHistStatistics;;", 12, 0.5, 12.5, count, -0.5, -0.5 + count);
61899827	286
296dd262	287	Int_t n = 1;
	288	fHistStatistics->GetXaxis()->SetBinLabel(n++, "Correct trigger class(es)");
	289	fHistStatistics->GetXaxis()->SetBinLabel(n++, "FO >= 1");
	290	fHistStatistics->GetXaxis()->SetBinLabel(n++, "FO >= 2");
	291	fHistStatistics->GetXaxis()->SetBinLabel(n++, "V0A");
	292	fHistStatistics->GetXaxis()->SetBinLabel(n++, "V0C");
	293	fHistStatistics->GetXaxis()->SetBinLabel(n++, "V0 BG");
	294	fHistStatistics->GetXaxis()->SetBinLabel(n++, "(FO >= 1 \| V0A \| VOC) & !V0 BG");
	295	fHistStatistics->GetXaxis()->SetBinLabel(n++, "FO >= 1 & (V0A \| VOC) & !V0 BG");
	296	fHistStatistics->GetXaxis()->SetBinLabel(n++, "V0A & VOC & !V0 BG");
	297	fHistStatistics->GetXaxis()->SetBinLabel(n++, "(FO >= 2 \| (FO >= 1 & (V0A \| VOC)) \| (V0A & VOC)) & !V0 BG");
	298	fHistStatistics->GetXaxis()->SetBinLabel(n++, "Background identification");
	299	fHistStatistics->GetXaxis()->SetBinLabel(n++, "Accepted");
	300
	301	n = 1;
	302	for (Int_t i=0; i < fCollTrigClasses.GetEntries(); i++)
	303	fHistStatistics->GetYaxis()->SetBinLabel(n++, ((TObjString*) fCollTrigClasses.At(i))->String());
	304	for (Int_t i=0; i < fBGTrigClasses.GetEntries(); i++)
	305	fHistStatistics->GetYaxis()->SetBinLabel(n++, ((TObjString*) fBGTrigClasses.At(i))->String());
61899827	306
61899827	307	if (fHistBunchCrossing)
296dd262	308	delete fHistBunchCrossing;
	309
	310	fHistBunchCrossing = new TH2F("fHistBunchCrossing", "fHistBunchCrossing;bunch crossing number;", 4000, -0.5, 3999.5, count, -0.5, -0.5 + count);
61899827	311
	312	return kTRUE;
	313	}
	314
	315	void AliPhysicsSelection::Print(Option_t* /* option */) const
	316	{
	317	// print the configuration
	318
296dd262	319	Printf("Configuration:");
61899827	320
296dd262	321	Printf("Collision trigger classes:");
	322	for (Int_t i=0; i < fCollTrigClasses.GetEntries(); i++)
	323	Printf("%s", ((TObjString*) fCollTrigClasses.At(i))->String().Data());
61899827	324
296dd262	325	Printf("Background trigger classes:");
	326	for (Int_t i=0; i < fBGTrigClasses.GetEntries(); i++)
	327	Printf("%s", ((TObjString*) fBGTrigClasses.At(i))->String().Data());
	328
	329	AliTriggerAnalysis* triggerAnalysis = dynamic_cast<AliTriggerAnalysis*> (fTriggerAnalysis.At(0));
61899827	330
296dd262	331	if (triggerAnalysis)
	332	{
	333	if (triggerAnalysis->GetV0TimeOffset() > 0)
	334	Printf("V0 time offset active: %.2f ns", triggerAnalysis->GetV0TimeOffset());
61899827	335
296dd262	336	Printf("\nTotal available events:");
528640ed	337
296dd262	338	triggerAnalysis->PrintTriggerClasses();
296dd262	339	}
528640ed	340
296dd262	341	Printf("\nSelection statistics for first collision trigger:");
	342
	343	Printf("Total events with correct trigger class: %d", (Int_t) fHistStatistics->GetBinContent(1, 1));
	344	Printf("Selected collision candidates: %d", (Int_t) fHistStatistics->GetBinContent(12, 1));
61899827	345	}
	346
	347	Long64_t AliPhysicsSelection::Merge(TCollection* list)
	348	{
	349	// Merge a list of AliMultiplicityCorrection objects with this (needed for
	350	// PROOF).
	351	// Returns the number of merged objects (including this).
	352
	353	if (!list)
	354	return 0;
	355
	356	if (list->IsEmpty())
	357	return 1;
	358
	359	TIterator* iter = list->MakeIterator();
	360	TObject* obj;
	361
	362	// collections of all histograms
	363	const Int_t nHists = 9;
	364	TList collections[nHists];
	365
	366	Int_t count = 0;
	367	while ((obj = iter->Next())) {
	368
	369	AliPhysicsSelection* entry = dynamic_cast<AliPhysicsSelection*> (obj);
	370	if (entry == 0)
	371	continue;
	372
	373	Int_t n = 0;
296dd262	374	collections[n++].Add(&(entry->fTriggerAnalysis));
61899827	375	collections[n++].Add(entry->fHistStatistics);
61899827	376	collections[n++].Add(entry->fHistBunchCrossing);
296dd262	377	if (entry->fBackgroundIdentification)
296dd262	378	collections[n++].Add(entry->fBackgroundIdentification);
61899827	379
	380	count++;
	381	}
	382
	383	Int_t n = 0;
296dd262	384	fTriggerAnalysis.Merge(&collections[n++]);
61899827	385	fHistStatistics->Merge(&collections[n++]);
61899827	386	fHistBunchCrossing->Merge(&collections[n++]);
296dd262	387	if (fBackgroundIdentification)
296dd262	388	fBackgroundIdentification->Merge(&collections[n++]);
61899827	389
	390	delete iter;
	391
	392	return count+1;
	393	}
	394
	395	void AliPhysicsSelection::SaveHistograms(const char* folder) const
	396	{
	397	// write histograms to current directory
	398
	399	if (!fHistStatistics)
	400	return;
	401
	402	if (folder)
	403	{
	404	gDirectory->mkdir(folder);
	405	gDirectory->cd(folder);
	406	}
	407
	408	fHistStatistics->Write();
	409	fHistBunchCrossing->Write();
	410
296dd262	411	Int_t count = fCollTrigClasses.GetEntries() + fBGTrigClasses.GetEntries();
	412	for (Int_t i=0; i < count; i++)
	413	{
	414	TString triggerClass = "trigger_histograms_";
	415	if (i < fCollTrigClasses.GetEntries())
	416	triggerClass += ((TObjString*) fCollTrigClasses.At(i))->String();
	417	else
	418	triggerClass += ((TObjString*) fBGTrigClasses.At(i - fCollTrigClasses.GetEntries()))->String();
61899827	419
296dd262	420	gDirectory->mkdir(triggerClass);
296dd262	421	gDirectory->cd(triggerClass);
61899827	422
296dd262	423	static_cast<AliTriggerAnalysis*> (fTriggerAnalysis.At(i))->SaveHistograms();
	424
	425	gDirectory->cd("..");
	426	}
	427
	428	if (fBackgroundIdentification)
	429	{
	430	gDirectory->mkdir("background_identification");
	431	gDirectory->cd("background_identification");
	432
	433	fBackgroundIdentification->GetOutput()->Write();
	434
	435	gDirectory->cd("..");
	436	}
61899827	437
	438	if (folder)
	439	gDirectory->cd("..");
	440	}