AliAnalysisTaskEmcalTriggerBase.cxx

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 * Copyright(c) 1998-2016, ALICE Experiment at CERN, All rights reserved. *
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 * Author: The ALICE Off-line Project.                                    *
 * Contributors are mentioned in the code where appropriate.              *
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 * documentation strictly for non-commercial purposes is hereby granted   *
 * without fee, provided that the above copyright notice appears in all   *
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 * 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.                  *
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#include <functional>
#include <iostream>

#include <TClonesArray.h>
#include <TGrid.h>
#include <THistManager.h>
#include <TParameter.h>

#include "AliAnalysisTaskEmcalTriggerBase.h"
#include "AliAnalysisUtils.h"
#include "AliEMCALGeometry.h"
#include "AliEMCALTriggerPatchInfo.h"
#include "AliEMCALTriggerMapping.h"
#include "AliESDEvent.h"
#include "AliInputEventHandler.h"
#include "AliLog.h"
#include "AliOADBContainer.h"
#include "AliVVertex.h"

ClassImp(EMCalTriggerPtAnalysis::AliAnalysisTaskEmcalTriggerBase)

namespace EMCalTriggerPtAnalysis {

AliAnalysisTaskEmcalTriggerBase::AliAnalysisTaskEmcalTriggerBase():
  AliAnalysisTaskEmcal(),
  fTriggerSelection(nullptr),
  fHistos(nullptr),
  fTriggerStringFromPatches(kFALSE),
  fSelectedTriggers(),
  fVertexCut(-10., 10.),
  fNameDownscaleOADB(""),
  fDownscaleOADB(nullptr),
  fDownscaleFactors(nullptr),
  fNameMaskedFastorOADB(),
  fMaskedFastorOADB(nullptr),
  fMaskedFastors(),
  fOnlineTriggerThresholds(),
  fSelectNoiseEvents(false),
  fRejectNoiseEvents(false)
{
  SetNeedEmcalGeom(true);
  SetCaloTriggerPatchInfoName("EmcalTriggers");
}

AliAnalysisTaskEmcalTriggerBase::AliAnalysisTaskEmcalTriggerBase(const char *name):
  AliAnalysisTaskEmcal(name, true),
  fTriggerSelection(nullptr),
  fHistos(nullptr),
  fTriggerStringFromPatches(kFALSE),
  fSelectedTriggers(),
  fVertexCut(-10., 10.),
  fNameDownscaleOADB(""),
  fDownscaleOADB(nullptr),
  fDownscaleFactors(nullptr),
  fNameMaskedFastorOADB(),
  fMaskedFastorOADB(nullptr),
  fMaskedFastors(),
  fOnlineTriggerThresholds(),
  fSelectNoiseEvents(false),
  fRejectNoiseEvents(false)
{
  SetNeedEmcalGeom(true);
  SetCaloTriggerPatchInfoName("EmcalTriggers");
}

AliAnalysisTaskEmcalTriggerBase::~AliAnalysisTaskEmcalTriggerBase() {
  if(fTriggerSelection) delete fTriggerSelection;
  if(fHistos) delete fHistos;
  if(fDownscaleOADB) delete fDownscaleOADB;
}

void AliAnalysisTaskEmcalTriggerBase::UserCreateOutputObjects() {
  AliAnalysisTaskEmcal::UserCreateOutputObjects();
  if(!fAliAnalysisUtils) fAliAnalysisUtils = new AliAnalysisUtils;

  fHistos = new THistManager(Form("Histos_%s", GetName()));

  CreateUserObjects();
  CreateUserHistos();

  for(auto h : *(fHistos->GetListOfHistograms())) fOutput->Add(h);

  PostData(1, fOutput);
}

Bool_t AliAnalysisTaskEmcalTriggerBase::IsEventSelected(){
  // Apply trigger selection
  TriggerSelection();
  if(!fSelectedTriggers.size()) return false;

  UserFillHistosBeforeEventSelection();

  const AliVVertex *vtx = fInputEvent->GetPrimaryVertex();
  //if(!fInputEvent->IsPileupFromSPD(3, 0.8, 3., 2., 5.)) return;         // reject pileup event
  if(vtx->GetNContributors() < 1) return false;
  if(fInputEvent->IsA() == AliESDEvent::Class() && fAliAnalysisUtils->IsFirstEventInChunk(fInputEvent)) return false;
  if(fAliAnalysisUtils->IsPileUpEvent(fInputEvent)) return false;       // Apply new vertex cut

  if(!fAliAnalysisUtils->IsVertexSelected2013pA(fInputEvent))return false;       // Apply new vertex cut
  if(!fVertexCut.IsInRange(fVertex[2])) return false;
  if(!IsUserEventSelected()) return false;

  // Do MC outlier cut
  if(fIsPythia){
    if(!CheckMCOutliers()){
      AliDebugStream(1) << GetName() << ": Reject MC outliers" << std::endl;
      return false;
    }
  }

  UserFillHistosAfterEventSelection();
  return true;
}


void AliAnalysisTaskEmcalTriggerBase::TriggerSelection(){
  fSelectedTriggers.clear();

  TString triggerstring = "";
  if(fTriggerStringFromPatches){
    triggerstring = GetFiredTriggerClassesFromPatches(fTriggerPatchInfo);
  } else {
    triggerstring = fInputEvent->GetFiredTriggerClasses();
  }
  UInt_t selectionstatus = fInputHandler->IsEventSelected();
  Bool_t isMinBias = selectionstatus & AliVEvent::kINT7,
      emcalTriggers[AliEmcalTriggerOfflineSelection::kTrgn];
  emcalTriggers[AliEmcalTriggerOfflineSelection::kTrgEJ1] = (selectionstatus & AliVEvent::kEMCEJE) && triggerstring.Contains("EJ1");
  emcalTriggers[AliEmcalTriggerOfflineSelection::kTrgEJ2] = (selectionstatus & AliVEvent::kEMCEJE) && triggerstring.Contains("EJ2");
  emcalTriggers[AliEmcalTriggerOfflineSelection::kTrgEG1] = (selectionstatus & AliVEvent::kEMCEGA) && triggerstring.Contains("EG1"),
  emcalTriggers[AliEmcalTriggerOfflineSelection::kTrgEG2] = (selectionstatus & AliVEvent::kEMCEGA) && triggerstring.Contains("EG2");
  emcalTriggers[AliEmcalTriggerOfflineSelection::kTrgEL0] = (selectionstatus & AliVEvent::kEMC7) && triggerstring.Contains("CEMC7");
  emcalTriggers[AliEmcalTriggerOfflineSelection::kTrgDJ1] = (selectionstatus & AliVEvent::kEMCEJE) && triggerstring.Contains("DJ1");
  emcalTriggers[AliEmcalTriggerOfflineSelection::kTrgDJ2] = (selectionstatus & AliVEvent::kEMCEJE) && triggerstring.Contains("DJ2");
  emcalTriggers[AliEmcalTriggerOfflineSelection::kTrgDG1] = (selectionstatus & AliVEvent::kEMCEGA) && triggerstring.Contains("DG1");
  emcalTriggers[AliEmcalTriggerOfflineSelection::kTrgDG2] = (selectionstatus & AliVEvent::kEMCEGA) && triggerstring.Contains("DG2");
  emcalTriggers[AliEmcalTriggerOfflineSelection::kTrgDL0] = (selectionstatus & AliVEvent::kEMC7) && triggerstring.Contains("CDMC7");
  if(fTriggerPatchInfo && fTriggerSelection){
    for(int itrg = 0; itrg < AliEmcalTriggerOfflineSelection::kTrgn; itrg++)
      emcalTriggers[itrg] &= fTriggerSelection->IsOfflineSelected(AliEmcalTriggerOfflineSelection::EmcalTriggerClass(itrg), fTriggerPatchInfo);
  }
  // Online selection / rejection
  if(fRejectNoiseEvents || fSelectNoiseEvents){
    if(fRejectNoiseEvents){
      for(int itrg = 0; itrg < AliEmcalTriggerOfflineSelection::kTrgn; itrg++){
        if(emcalTriggers[itrg])
          emcalTriggers[itrg] &= SelectOnlineTrigger(AliEmcalTriggerOfflineSelection::EmcalTriggerClass(itrg));
      }
    } else {
      for(int itrg = 0; itrg < AliEmcalTriggerOfflineSelection::kTrgn; itrg++){
        if(emcalTriggers[itrg])
          emcalTriggers[itrg] &= !SelectOnlineTrigger(AliEmcalTriggerOfflineSelection::EmcalTriggerClass(itrg));
      }
    }
  }
  if(isMinBias) fSelectedTriggers.push_back("MB");
  if(emcalTriggers[AliEmcalTriggerOfflineSelection::kTrgEL0]){
    fSelectedTriggers.push_back("EMC7");
    if(!isMinBias) fSelectedTriggers.push_back("EMC7excl");
  }
  if(emcalTriggers[AliEmcalTriggerOfflineSelection::kTrgDL0]){
    fSelectedTriggers.push_back("DMC7");
    if(!isMinBias) fSelectedTriggers.push_back("DMC7excl");
  }
  if(emcalTriggers[AliEmcalTriggerOfflineSelection::kTrgEJ2]){
    fSelectedTriggers.push_back("EJ2");
    if(!(isMinBias || emcalTriggers[AliEmcalTriggerOfflineSelection::kTrgEL0])) fSelectedTriggers.push_back("EJ2excl");
  }
  if(emcalTriggers[AliEmcalTriggerOfflineSelection::kTrgEJ1]){
    fSelectedTriggers.push_back("EJ1");
    if(!(isMinBias || emcalTriggers[AliEmcalTriggerOfflineSelection::kTrgEL0] || emcalTriggers[AliEmcalTriggerOfflineSelection::kTrgEJ2])) fSelectedTriggers.push_back("EJ1excl");
  }
  if(emcalTriggers[AliEmcalTriggerOfflineSelection::kTrgDJ2]){
    fSelectedTriggers.push_back("DJ2");
    if(!(isMinBias || emcalTriggers[AliEmcalTriggerOfflineSelection::kTrgDL0])) fSelectedTriggers.push_back("DJ2excl");
  }
  if(emcalTriggers[AliEmcalTriggerOfflineSelection::kTrgDJ1]){
    fSelectedTriggers.push_back("DJ1");
    if(!(isMinBias || emcalTriggers[AliEmcalTriggerOfflineSelection::kTrgDL0] || emcalTriggers[AliEmcalTriggerOfflineSelection::kTrgDJ2])) fSelectedTriggers.push_back("DJ1excl");
  }
  if(emcalTriggers[AliEmcalTriggerOfflineSelection::kTrgEG2]){
    fSelectedTriggers.push_back("EG2");
    if(!(isMinBias || emcalTriggers[AliEmcalTriggerOfflineSelection::kTrgEL0])) fSelectedTriggers.push_back("EG2excl");
  }
  if(emcalTriggers[AliEmcalTriggerOfflineSelection::kTrgDG1]){
    fSelectedTriggers.push_back("EG1");
    if(!(isMinBias || emcalTriggers[AliEmcalTriggerOfflineSelection::kTrgEL0] || emcalTriggers[AliEmcalTriggerOfflineSelection::kTrgEG2])) fSelectedTriggers.push_back("EG1excl");
  }
  if(emcalTriggers[AliEmcalTriggerOfflineSelection::kTrgDG2]){
    fSelectedTriggers.push_back("DG2");
    if(!(isMinBias || emcalTriggers[AliEmcalTriggerOfflineSelection::kTrgDL0])) fSelectedTriggers.push_back("DG2excl");
  }
  if(emcalTriggers[AliEmcalTriggerOfflineSelection::kTrgDG1]){
    fSelectedTriggers.push_back("DG1");
    if(!(isMinBias || emcalTriggers[AliEmcalTriggerOfflineSelection::kTrgDL0] || emcalTriggers[AliEmcalTriggerOfflineSelection::kTrgDG2])) fSelectedTriggers.push_back("DG1excl");
  }
}

void AliAnalysisTaskEmcalTriggerBase::ExecOnce(){
  AliAnalysisTaskEmcal::ExecOnce();

  if(!fLocalInitialized){
    return;
  }

  // Handle OADB container with downscaling factors
  if(fNameDownscaleOADB.Length()){
    if(fNameDownscaleOADB.Contains("alien://") && ! gGrid) TGrid::Connect("alien://");
    fDownscaleOADB = new AliOADBContainer("AliEmcalDownscaleFactors");
    fDownscaleOADB->InitFromFile(fNameDownscaleOADB.Data(), "AliEmcalDownscaleFactors");
  }
  // Load OADB container with masked fastors (in case fastor masking is switched on)
  if(fNameMaskedFastorOADB.Length() && (fRejectNoiseEvents || fSelectNoiseEvents)){
    if(fNameMaskedFastorOADB.Contains("alien://") && ! gGrid) TGrid::Connect("alien://");
    fMaskedFastorOADB = new AliOADBContainer("AliEmcalMaskedFastors");
    fMaskedFastorOADB->InitFromFile(fNameMaskedFastorOADB.Data(), "AliEmcalMaskedFastors");
  }

  // Setting online threshold for trigger
  if(!OnlineThresholdsInitialized()){
    if(fInputEvent->GetRunNumber() >= 15344 && fInputEvent->GetRunNumber() <= 197388){
      if(!GetOnlineTriggerThresholdByName("EG1")) SetOnlineTriggerThreshold("EG1", 140);
      if(!GetOnlineTriggerThresholdByName("EG2")) SetOnlineTriggerThreshold("EG2", 89);
      if(!GetOnlineTriggerThresholdByName("EJ1")) SetOnlineTriggerThreshold("EJ1", 260);
      if(!GetOnlineTriggerThresholdByName("EJ2")) SetOnlineTriggerThreshold("EJ2", 127);
      SetOnlineTriggerThreshold("DG1", 0);
      SetOnlineTriggerThreshold("DG2", 0);
      SetOnlineTriggerThreshold("DJ1", 0);
      SetOnlineTriggerThreshold("DJ2", 0);
      SetOnlineTriggerThreshold("EMC7", 0);
      SetOnlineTriggerThreshold("DMC7", 0);
    }
  }

  // Load acceptance OADB
  if(fNameAcceptanceOADB && fTriggerSelection){
    AliOADBContainer acceptanceCont;
    acceptanceCont.InitFromFile(fNameAcceptanceOADB.Data(), "AliEmcalTriggerAcceptance");
    TObjArray *acceptanceMaps = dynamic_cast<TObjArray *>(acceptanceCont.GetObject(fInputEvent->GetRunNumber()));
    TH2 *map(nullptr);
    if((map = dynamic_cast<TH2 *>(acceptanceMaps->FindObject("EG1")))){
      map->SetDirectory(nullptr);
      fTriggerSelection->SetAcceptanceMap(AliEmcalTriggerOfflineSelection::kTrgEG1, map);
    }
    if((map = dynamic_cast<TH2 *>(acceptanceMaps->FindObject("EG2")))){
      map->SetDirectory(nullptr);
      fTriggerSelection->SetAcceptanceMap(AliEmcalTriggerOfflineSelection::kTrgEG2, map);
    }
    if((map = dynamic_cast<TH2 *>(acceptanceMaps->FindObject("DG1")))){
      map->SetDirectory(nullptr);
      fTriggerSelection->SetAcceptanceMap(AliEmcalTriggerOfflineSelection::kTrgDG1, map);
    }
    if((map = dynamic_cast<TH2 *>(acceptanceMaps->FindObject("DG2")))){
      map->SetDirectory(nullptr);
      fTriggerSelection->SetAcceptanceMap(AliEmcalTriggerOfflineSelection::kTrgDG1, map);
    }
    if((map = dynamic_cast<TH2 *>(acceptanceMaps->FindObject("EJ1")))){
      map->SetDirectory(nullptr);
      fTriggerSelection->SetAcceptanceMap(AliEmcalTriggerOfflineSelection::kTrgEJ1, map);
    }
    if((map = dynamic_cast<TH2 *>(acceptanceMaps->FindObject("EJ2")))){
      map->SetDirectory(nullptr);
      fTriggerSelection->SetAcceptanceMap(AliEmcalTriggerOfflineSelection::kTrgEJ2, map);
    }
    if((map = dynamic_cast<TH2 *>(acceptanceMaps->FindObject("DJ1")))){
      map->SetDirectory(nullptr);
      fTriggerSelection->SetAcceptanceMap(AliEmcalTriggerOfflineSelection::kTrgDJ1, map);
    }
    if((map = dynamic_cast<TH2 *>(acceptanceMaps->FindObject("DJ2")))){
      map->SetDirectory(nullptr);
      fTriggerSelection->SetAcceptanceMap(AliEmcalTriggerOfflineSelection::kTrgDJ1, map);
    }
  }
}

void AliAnalysisTaskEmcalTriggerBase::RunChanged(Int_t runnumber){
  if(fDownscaleOADB){
    fDownscaleFactors = static_cast<TObjArray *>(fDownscaleOADB->GetObject(runnumber));
  }
  if(fMaskedFastorOADB){
   fMaskedFastors.clear();
   TObjArray *ids = static_cast<TObjArray *>(fMaskedFastorOADB->GetObject(runnumber));
   for(auto m : *ids){
     TParameter<int> *id = static_cast<TParameter<int> *>(m);
     fMaskedFastors.push_back(id->GetVal());
   }
 }
}

std::vector<TString> AliAnalysisTaskEmcalTriggerBase::GetSupportedTriggers(){
  // Exclusive means classes without lower trigger classes (which are downscaled) -
  // in order to make samples statistically independent: MBExcl means MinBias && !EMCAL trigger
  std::vector<TString> triggers = {
    "MB", "EMC7", "DMC7",
    "EJ1", "EJ2", "EG1", "EG2", "DJ1", "DJ2", "DG1", "DG2",
    "EMC7excl", "DMC7excl", "EG2excl", "EJ2excl", "DG2excl", "DJ2excl",
    "EJ1excl", "DJ1excl", "EG1excl", "DG1excl"
  };
  return triggers;
}

bool AliAnalysisTaskEmcalTriggerBase::SelectOnlineTrigger(AliEmcalTriggerOfflineSelection::EmcalTriggerClass trigger) const{
  AliDebugStream(1) << "Using V1 online trigger selector" << std::endl;
  if(trigger == AliEmcalTriggerOfflineSelection::kTrgEL0 || trigger == AliEmcalTriggerOfflineSelection::kTrgEL0) return true;
  double onlinethresholds[5] = {140., 89., 260., 127., 0.};
  int ngood(0);
  for(auto p : *fTriggerPatchInfo){
    AliEMCALTriggerPatchInfo *patch = static_cast<AliEMCALTriggerPatchInfo *>(p);
    if((AliEmcalTriggerOfflineSelection::IsSingleShower(trigger) && patch->IsGammaLowRecalc()) ||
        (!AliEmcalTriggerOfflineSelection::IsSingleShower(trigger) && patch->IsJetLowRecalc())){
      if(patch->GetADCAmp() >= GetOnlineTriggerThresholdByIndex(trigger)) ngood++;
    }
  }
  return ngood > 0;
}

Double_t AliAnalysisTaskEmcalTriggerBase::GetTriggerWeight(const TString &triggerclass) const {
  if(fDownscaleFactors){
    TParameter<double> *result(nullptr);
    // Downscaling only done on MB, L0 and the low threshold triggers
    if(triggerclass.Contains("MB")) result = static_cast<TParameter<double> *>(fDownscaleFactors->FindObject("INT7"));
    else if(triggerclass.Contains("EMC7")) result = static_cast<TParameter<double> *>(fDownscaleFactors->FindObject("EMC7"));
    else if(triggerclass.Contains("EJ2")) result = static_cast<TParameter<double> *>(fDownscaleFactors->FindObject("EJ2"));
    else if(triggerclass.Contains("EG2")) result = static_cast<TParameter<double> *>(fDownscaleFactors->FindObject("EG2"));
    if(result) return 1./result->GetVal();
  }
  return 1.;
}

void AliAnalysisTaskEmcalTriggerBase::SetOnlineTriggerThreshold(const TString &triggerclass, Int_t threshold){
  TParameter<int> *threshpar(nullptr);
  if((threshpar = static_cast<TParameter<int> *>(fOnlineTriggerThresholds.FindObject(triggerclass.Data())))){
    threshpar->SetVal(threshold);
  } else {
    fOnlineTriggerThresholds.Add(new TParameter<int>(triggerclass.Data(), threshold));
  }
}

Int_t AliAnalysisTaskEmcalTriggerBase::GetOnlineTriggerThresholdByName(const TString &name) const {
  Int_t threshold(0);
  TParameter<int> *val(nullptr);
  if((val = static_cast<TParameter<int> *>(fOnlineTriggerThresholds.FindObject(name))))
    threshold = val->GetVal();
  return threshold;
}

Int_t AliAnalysisTaskEmcalTriggerBase::GetOnlineTriggerThresholdByIndex(AliEmcalTriggerOfflineSelection::EmcalTriggerClass trigger) const {
  const TString triggernames[AliEmcalTriggerOfflineSelection::kTrgn] = {"EMC7", "EG1", "EG2", "EJ1", "EJ2", "DMC7",
      "DG1", "DG2", "DJ1", "DJ2"};
  return GetOnlineTriggerThresholdByName(triggernames[trigger]);
}

Bool_t AliAnalysisTaskEmcalTriggerBase::OnlineThresholdsInitialized() const {
  const TString triggernames[AliEmcalTriggerOfflineSelection::kTrgn] = {"EMC7", "EG1", "EG2", "EJ1", "EJ2", "DMC7",
      "DG1", "DG2", "DJ1", "DJ2"};
  bool isInitialized = true;
  for(int itrg = 0; itrg < AliEmcalTriggerOfflineSelection::kTrgn; itrg++){
    if(!fOnlineTriggerThresholds.FindObject(triggernames[itrg].Data())) {
      isInitialized = false;
      break;
    }
  }
  return isInitialized;
}

Bool_t AliAnalysisTaskEmcalTriggerBase::SelectFiredPatch(const TString &triggerclass, Int_t adc) const {
  return adc > GetOnlineTriggerThresholdByName(triggerclass);
}

TString AliAnalysisTaskEmcalTriggerBase::GetFiredTriggerClassesFromPatches(const TClonesArray* triggerpatches) const {
  TString triggerstring = "";
  Int_t nEJ1 = 0, nEJ2 = 0, nEG1 = 0, nEG2 = 0, nDJ1 = 0, nDJ2 = 0, nDG1 = 0, nDG2 = 0;
  for(auto patchIter : *triggerpatches){
    AliEMCALTriggerPatchInfo *patch = dynamic_cast<AliEMCALTriggerPatchInfo *>(patchIter);
    if(!patch->IsRecalc()) continue;
    if(patch->IsEMCal()){
      if(patch->IsGammaLowRecalc() && SelectFiredPatch("EG1", patch->GetADCAmp())) nEG1++;
      if(patch->IsGammaLowRecalc() && SelectFiredPatch("EG2", patch->GetADCAmp())) nEG2++;
      if(patch->IsJetLowRecalc() && SelectFiredPatch("EJ1", patch->GetADCAmp())) nEJ1++;
      if(patch->IsJetLowRecalc() && SelectFiredPatch("EJ2", patch->GetADCAmp())) nEJ2++;
    } else {
      if(patch->IsGammaLowRecalc() && SelectFiredPatch("DG1", patch->GetADCAmp())) nDG1++;
      if(patch->IsGammaLowRecalc() && SelectFiredPatch("DG2", patch->GetADCAmp())) nDG2++;
      if(patch->IsJetLowRecalc() && SelectFiredPatch("DJ1", patch->GetADCAmp())) nDJ1++;
      if(patch->IsJetLowRecalc() && SelectFiredPatch("DJ2", patch->GetADCAmp())) nDJ2++;
    }
  }
  if(nEJ1) triggerstring += "EJ1";
  if(nEJ2){
    if(triggerstring.Length()) triggerstring += ",";
    triggerstring += "EJ2";
  }
  if(nEG1){
    if(triggerstring.Length()) triggerstring += ",";
    triggerstring += "EG1";
  }
  if(nEG2){
    if(triggerstring.Length()) triggerstring += ",";
    triggerstring += "EG2";
  }
  if(nDJ1){
    if(triggerstring.Length()) triggerstring += ",";
    triggerstring += "DJ2";
  }
  if(nDJ2){
    if(triggerstring.Length()) triggerstring += ",";
    triggerstring += "DJ2";
  }
  if(nDG1){
    if(triggerstring.Length()) triggerstring += ",";
    triggerstring += "DG1";
  }
  if(nDG2){
    if(triggerstring.Length()) triggerstring += ",";
    triggerstring += "DG2";
  }
  return triggerstring;
}

} /* namespace EMCalTriggerPtAnalysis */