[u/mrichter/AliRoot.git] / PHOS / AliPHOSRawDigiProducer.cxx

/**************************************************************************
 * Copyright(c) 2007, 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.                  *
 **************************************************************************/

/* $Id$ */

//This class produces PHOS digits of one event
//using AliPHOSRawDecoder. 
//
//   For example:
//   TClonesArray *digits = new TClonesArray("AliPHOSDigit",100);
//   AliRawReader* rawReader = new AliRawReaderDate("2006run2211.raw");
//   AliPHOSRawDecoder dc(rawReader);
//   while (rawReader->NextEvent()) {
//     AliPHOSRawDigiProducer producer;
//     producer.MakeDigits(digits,&dc);
//   }

// Author: Boris Polichtchouk

// --- ROOT system ---
#include "TClonesArray.h"

// --- AliRoot header files ---
#include "AliPHOSRawDigiProducer.h"
#include "AliPHOSRawDecoder.h"
#include "AliPHOSGeometry.h"
#include "AliPHOSDigit.h"
#include "AliPHOSRecoParam.h"
#include "AliPHOSCalibData.h"
#include "AliLog.h"

ClassImp(AliPHOSRawDigiProducer)

AliPHOSCalibData * AliPHOSRawDigiProducer::fgCalibData  = 0 ; 

//--------------------------------------------------------------------------------------
AliPHOSRawDigiProducer::AliPHOSRawDigiProducer():TObject(),
  fEmcMinE(0.),fCpvMinE(0.),fEmcCrystals(0),fGeom(0){

}
//--------------------------------------------------------------------------------------
AliPHOSRawDigiProducer::AliPHOSRawDigiProducer(const AliPHOSRecoParam* parEmc, const AliPHOSRecoParam* parCpv):TObject(),
  fEmcMinE(0.),fCpvMinE(0.),fEmcCrystals(0),fGeom(0){

  if(!parEmc) AliFatal("Reconstruction parameters for EMC not set!");
  if(!parCpv) AliFatal("Reconstruction parameters for CPV not set!");

  fEmcMinE = parEmc->GetMinE();
  fCpvMinE = parCpv->GetMinE();

  fGeom=AliPHOSGeometry::GetInstance() ;
  if(!fGeom) fGeom = AliPHOSGeometry::GetInstance("IHEP");

  fEmcCrystals=fGeom->GetNCristalsInModule()*fGeom->GetNModules() ;

  GetCalibrationParameters() ; 
}
//--------------------------------------------------------------------------------------                       
AliPHOSRawDigiProducer::AliPHOSRawDigiProducer(const AliPHOSRawDigiProducer &dp):TObject(),
  fEmcMinE(0.),fCpvMinE(0.),fEmcCrystals(0),fGeom(0){                                                          

  fEmcMinE = dp.fEmcMinE ;
  fCpvMinE = dp.fCpvMinE ;
  fEmcCrystals = dp.fEmcCrystals ;
  fGeom = dp.fGeom ;
}
//--------------------------------------------------------------------------------------
AliPHOSRawDigiProducer& AliPHOSRawDigiProducer::operator= (const AliPHOSRawDigiProducer &dp){
  if(&dp == this) return *this;

  fEmcMinE = dp.fEmcMinE ;
  fCpvMinE = dp.fCpvMinE ;
  fEmcCrystals = dp.fEmcCrystals ;
  fGeom = dp.fGeom ;
  return  *this;
} 
 
//--------------------------------------------------------------------------------------
void AliPHOSRawDigiProducer::MakeDigits(TClonesArray *digits, AliPHOSRawDecoder* decoder) 
{
  //Makes the job.
  //TClonesArray *digits and raw data decoder should be provided by calling function.

  digits->Clear();
 
  Int_t    iDigit   = 0 ;
  Int_t relId[4], absId =0;

  const Double_t baseLine=1. ; //Minimal energy of digit in ADC ch. 
  const Double_t highLowDiff=2. ; //Maximal difference between High and Low channels in LG adc channels 

  //Temporary array for LowGain digits
  TClonesArray tmpLG("AliPHOSDigit",10000) ;
  Int_t ilgDigit=0 ;
  
  while (decoder->NextDigit()) {

    Double_t energy=decoder->GetEnergy() ; 
    if(energy<=baseLine) //in ADC channels
      continue ;

    Bool_t lowGainFlag = decoder->IsLowGain();

    relId[0] = decoder->GetModule();
    relId[1] = 0;
    relId[2] = decoder->GetRow();
    relId[3] = decoder->GetColumn();
    fGeom->RelToAbsNumbering(relId, absId);

    Double_t time = decoder->GetTime() ;
    time = CalibrateT(time,relId,lowGainFlag) ;

    energy = CalibrateE(energy,relId,lowGainFlag) ;

    if(energy <= 0.) 
       continue;

    if(lowGainFlag){
      new(tmpLG[ilgDigit]) AliPHOSDigit(-1,absId,(Float_t)energy,(Float_t)time);                                                        
      ilgDigit++ ; 
    }
    else{ 
      if(decoder->IsOverflow()) //Keep this digit to replace it by Low Gain later.
                                //If there is no LogGain it wil be removed by cut on Min E
        new((*digits)[iDigit]) AliPHOSDigit(-1,absId,-1.f,(Float_t)time);                                                       
      else
        new((*digits)[iDigit]) AliPHOSDigit(-1,absId,(Float_t)energy,(Float_t)time);                                                       
      iDigit++;                                                                                                                          
    }
  }

  //Now scan created LG and HG digits and keep only those which appeared in both lists 
  //replace energy of HighGain digits only if there is overflow
  //negative energy (overflow)
  digits->Sort() ;
  tmpLG.Sort() ;
  Int_t iLG = 0;
  Int_t nLG1 = tmpLG.GetEntriesFast()-1 ;
  for(Int_t iDig=0 ; iDig < digits->GetEntriesFast() ; iDig++) { 
    AliPHOSDigit * digHG = dynamic_cast<AliPHOSDigit*>(digits->At(iDig)) ;
    AliPHOSDigit * digLG = dynamic_cast<AliPHOSDigit*>(tmpLG.At(iLG)) ;
    while(iLG<nLG1 && digHG->GetId()> digLG->GetId()){
      iLG++ ;
      digLG = dynamic_cast<AliPHOSDigit*>(tmpLG.At(iLG)) ;
    }
    if(digHG->GetId() == digLG->GetId()){ //we found pair
      if(digHG->GetEnergy()<0.){ //This is overflow in HG
        digHG->SetTime(digLG->GetTime()) ;                                                                                                  
        digHG->SetEnergy(digLG->GetEnergy()) ;                                                                                              
      } 
      else{ //Make approximate comparison of HG and LG energies
        Double_t de = (digHG->GetEnergy()-digLG->GetEnergy())/16./0.005 ; //aproximate difference in LG ADC ch. 
        if(TMath::Abs(de)>highLowDiff){ //too strong difference, remove digit
          digits->RemoveAt(iDig) ;
        }
      }
    }
    else{ //no pair - remove
      // temporary fix for dead LG channels
      Int_t absId=digHG->GetId() ;
      Int_t relId[4] ;
      fGeom->AbsToRelNumbering(absId,relId) ;
      if(relId[2]%2==1 && relId[3]%16==4) 
        continue ;
      digits->RemoveAt(iDig) ;                                                                                                            
    }
  }

  CleanDigits(digits) ;

}
//____________________________________________________________________________
Double_t AliPHOSRawDigiProducer::CalibrateE(Double_t amp, Int_t* relId, Bool_t isLowGain)
{
  // Convert EMC measured amplitude into real energy.
  // Calibration parameters are taken from calibration data base for raw data,
  // or from digitizer parameters for simulated data.                        
  if(fgCalibData){ 
    Int_t   module = relId[0];  
    Int_t   column = relId[3];
    Int_t   row    = relId[2];
    if(relId[1]==0) { // this is EMC 
      if(isLowGain){
        amp*= fgCalibData->GetHighLowRatioEmc(module,column,row);
      }
      amp *= fgCalibData->GetADCchannelEmc(module,column,row);                                                          
      return amp ;         
    }         
  }          
  return 0;        
}
//____________________________________________________________________________
Double_t AliPHOSRawDigiProducer::CalibrateT(Double_t time, Int_t * relId, Bool_t /* isLowGain */)
{
  //Calibrate time
  if(fgCalibData){
    Int_t   module = relId[0];
    Int_t   column = relId[3];
    Int_t   row    = relId[2];
    if(relId[1]==0) { // this is EMC
      time += fgCalibData->GetTimeShiftEmc(module,column,row);                   
      return time ;             
    }
  }
 
  return -999.;
}
//____________________________________________________________________________
void AliPHOSRawDigiProducer::CleanDigits(TClonesArray * digits)
{
  // remove digits with amplitudes below threshold.
  // remove digits in bad channels
  // sort digits with icreasing AbsId
  
  //remove digits in bad map and below threshold
  Bool_t isBadMap = 0 ;
  if(fgCalibData->GetNumOfEmcBadChannels()){
    isBadMap=1 ;
  }
  
  for(Int_t i=0; i<digits->GetEntriesFast(); i++){
    AliPHOSDigit * digit = static_cast<AliPHOSDigit*>(digits->At(i)) ;
    if(!digit)
      continue  ;
    if ( (IsInEMC(digit) && digit->GetEnergy() < fEmcMinE) ||
	 (IsInCPV(digit) && digit->GetEnergy() < fCpvMinE) ){
      digits->RemoveAt(i) ;
      continue ;
    }
    if(isBadMap){ //check bad map now
      Int_t relid[4] ;
      fGeom->AbsToRelNumbering(digit->GetId(), relid) ; 
      if(fgCalibData->IsBadChannelEmc(relid[0],relid[2],relid[3])){
	digits->RemoveAt(i) ;
      }
    }
  }

  //Compress, sort and set indexes
  digits->Compress() ;
//  digits->Sort(); already sorted earlier
  for (Int_t i = 0 ; i < digits->GetEntriesFast() ; i++) { 
    AliPHOSDigit *digit = static_cast<AliPHOSDigit*>( digits->At(i) ) ; 
    digit->SetIndexInList(i) ;     
  }
}
//____________________________________________________________________________
Bool_t AliPHOSRawDigiProducer::IsInEMC(AliPHOSDigit * digit) const
{
  // Tells if (true) or not (false) the digit is in a PHOS-EMC module
  return digit->GetId() <= fEmcCrystals ;

}

//____________________________________________________________________________
Bool_t AliPHOSRawDigiProducer::IsInCPV(AliPHOSDigit * digit) const
{
  // Tells if (true) or not (false) the digit is in a PHOS-CPV module
  return digit->GetId() > fEmcCrystals ;
}
//____________________________________________________________________________
void AliPHOSRawDigiProducer::GetCalibrationParameters() 
{
  // Set calibration parameters:
  // if calibration database exists, they are read from database,
  // otherwise, reconstruction stops in the constructor of AliPHOSCalibData
  //
  // It is a user responsilibity to open CDB before reconstruction, for example: 
  // AliCDBStorage* storage = AliCDBManager::Instance()->GetStorage("local://CalibDB");

  if (!fgCalibData){
    fgCalibData = new AliPHOSCalibData(-1); //use AliCDBManager's run number
  }
  if (fgCalibData->GetCalibDataEmc() == 0)
    AliFatal("Calibration parameters for PHOS EMC not found. Stop reconstruction.\n");
  if (fgCalibData->GetCalibDataCpv() == 0)
    AliFatal("Calibration parameters for PHOS CPV not found. Stop reconstruction.\n");
}
Commit	Line	Data
7bc140a5	1	/**************************************************************************
	2	* Copyright(c) 2007, 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	/* $Id$ */
	17
	18	//This class produces PHOS digits of one event
	19	//using AliPHOSRawDecoder.
	20	//
	21	// For example:
	22	// TClonesArray *digits = new TClonesArray("AliPHOSDigit",100);
	23	// AliRawReader* rawReader = new AliRawReaderDate("2006run2211.raw");
	24	// AliPHOSRawDecoder dc(rawReader);
	25	// while (rawReader->NextEvent()) {
	26	// AliPHOSRawDigiProducer producer;
	27	// producer.MakeDigits(digits,&dc);
	28	// }
	29
	30	// Author: Boris Polichtchouk
	31
	32	// --- ROOT system ---
88fb5e50	33	#include "TClonesArray.h"
88fb5e50	34
7bc140a5	35	// --- AliRoot header files ---
88fb5e50	36	#include "AliPHOSRawDigiProducer.h"
	37	#include "AliPHOSRawDecoder.h"
	38	#include "AliPHOSGeometry.h"
	39	#include "AliPHOSDigit.h"
c0394bfb	40	#include "AliPHOSRecoParam.h"
	41	#include "AliPHOSCalibData.h"
	42	#include "AliLog.h"
88fb5e50	43
	44	ClassImp(AliPHOSRawDigiProducer)
	45
c0394bfb	46	AliPHOSCalibData * AliPHOSRawDigiProducer::fgCalibData = 0 ;
	47
	48	//--------------------------------------------------------------------------------------
	49	AliPHOSRawDigiProducer::AliPHOSRawDigiProducer():TObject(),
	50	fEmcMinE(0.),fCpvMinE(0.),fEmcCrystals(0),fGeom(0){
	51
	52	}
	53	//--------------------------------------------------------------------------------------
	54	AliPHOSRawDigiProducer::AliPHOSRawDigiProducer(const AliPHOSRecoParam* parEmc, const AliPHOSRecoParam* parCpv):TObject(),
	55	fEmcMinE(0.),fCpvMinE(0.),fEmcCrystals(0),fGeom(0){
	56
	57	if(!parEmc) AliFatal("Reconstruction parameters for EMC not set!");
	58	if(!parCpv) AliFatal("Reconstruction parameters for CPV not set!");
	59
	60	fEmcMinE = parEmc->GetMinE();
	61	fCpvMinE = parCpv->GetMinE();
	62
	63	fGeom=AliPHOSGeometry::GetInstance() ;
	64	if(!fGeom) fGeom = AliPHOSGeometry::GetInstance("IHEP");
	65
	66	fEmcCrystals=fGeom->GetNCristalsInModule()*fGeom->GetNModules() ;
	67
	68	GetCalibrationParameters() ;
	69	}
	70	//--------------------------------------------------------------------------------------
	71	AliPHOSRawDigiProducer::AliPHOSRawDigiProducer(const AliPHOSRawDigiProducer &dp):TObject(),
	72	fEmcMinE(0.),fCpvMinE(0.),fEmcCrystals(0),fGeom(0){
	73
	74	fEmcMinE = dp.fEmcMinE ;
	75	fCpvMinE = dp.fCpvMinE ;
	76	fEmcCrystals = dp.fEmcCrystals ;
	77	fGeom = dp.fGeom ;
	78	}
	79	//--------------------------------------------------------------------------------------
	80	AliPHOSRawDigiProducer& AliPHOSRawDigiProducer::operator= (const AliPHOSRawDigiProducer &dp){
	81	if(&dp == this) return *this;
	82
	83	fEmcMinE = dp.fEmcMinE ;
	84	fCpvMinE = dp.fCpvMinE ;
	85	fEmcCrystals = dp.fEmcCrystals ;
	86	fGeom = dp.fGeom ;
	87	return *this;
	88	}
	89
7bc140a5	90	//--------------------------------------------------------------------------------------
88fb5e50	91	void AliPHOSRawDigiProducer::MakeDigits(TClonesArray digits, AliPHOSRawDecoder decoder)
88fb5e50	92	{
7bc140a5	93	//Makes the job.
	94	//TClonesArray *digits and raw data decoder should be provided by calling function.
	95
88fb5e50	96	digits->Clear();
88fb5e50	97
88fb5e50	98	Int_t iDigit = 0 ;
88fb5e50	99	Int_t relId[4], absId =0;
88fb5e50	100
c0394bfb	101	const Double_t baseLine=1. ; //Minimal energy of digit in ADC ch.
c0394bfb	102	const Double_t highLowDiff=2. ; //Maximal difference between High and Low channels in LG adc channels
88fb5e50	103
c0394bfb	104	//Temporary array for LowGain digits
	105	TClonesArray tmpLG("AliPHOSDigit",10000) ;
	106	Int_t ilgDigit=0 ;
	107
	108	while (decoder->NextDigit()) {
34827459	109
c0394bfb	110	Double_t energy=decoder->GetEnergy() ;
	111	if(energy<=baseLine) //in ADC channels
	112	continue ;
1267d56d	113
c0394bfb	114	Bool_t lowGainFlag = decoder->IsLowGain();
88fb5e50	115
	116	relId[0] = decoder->GetModule();
	117	relId[1] = 0;
	118	relId[2] = decoder->GetRow();
	119	relId[3] = decoder->GetColumn();
c0394bfb	120	fGeom->RelToAbsNumbering(relId, absId);
	121
	122	Double_t time = decoder->GetTime() ;
	123	time = CalibrateT(time,relId,lowGainFlag) ;
	124
	125	energy = CalibrateE(energy,relId,lowGainFlag) ;
	126
	127	if(energy <= 0.)
	128	continue;
	129
	130	if(lowGainFlag){
	131	new(tmpLG[ilgDigit]) AliPHOSDigit(-1,absId,(Float_t)energy,(Float_t)time);
	132	ilgDigit++ ;
	133	}
	134	else{
	135	if(decoder->IsOverflow()) //Keep this digit to replace it by Low Gain later.
	136	//If there is no LogGain it wil be removed by cut on Min E
	137	new((*digits)[iDigit]) AliPHOSDigit(-1,absId,-1.f,(Float_t)time);
	138	else
	139	new((*digits)[iDigit]) AliPHOSDigit(-1,absId,(Float_t)energy,(Float_t)time);
	140	iDigit++;
	141	}
	142	}
	143
	144	//Now scan created LG and HG digits and keep only those which appeared in both lists
	145	//replace energy of HighGain digits only if there is overflow
	146	//negative energy (overflow)
	147	digits->Sort() ;
	148	tmpLG.Sort() ;
	149	Int_t iLG = 0;
	150	Int_t nLG1 = tmpLG.GetEntriesFast()-1 ;
	151	for(Int_t iDig=0 ; iDig < digits->GetEntriesFast() ; iDig++) {
	152	AliPHOSDigit * digHG = dynamic_cast<AliPHOSDigit*>(digits->At(iDig)) ;
	153	AliPHOSDigit * digLG = dynamic_cast<AliPHOSDigit*>(tmpLG.At(iLG)) ;
	154	while(iLG<nLG1 && digHG->GetId()> digLG->GetId()){
	155	iLG++ ;
	156	digLG = dynamic_cast<AliPHOSDigit*>(tmpLG.At(iLG)) ;
	157	}
	158	if(digHG->GetId() == digLG->GetId()){ //we found pair
	159	if(digHG->GetEnergy()<0.){ //This is overflow in HG
	160	digHG->SetTime(digLG->GetTime()) ;
	161	digHG->SetEnergy(digLG->GetEnergy()) ;
	162	}
	163	else{ //Make approximate comparison of HG and LG energies
	164	Double_t de = (digHG->GetEnergy()-digLG->GetEnergy())/16./0.005 ; //aproximate difference in LG ADC ch.
	165	if(TMath::Abs(de)>highLowDiff){ //too strong difference, remove digit
	166	digits->RemoveAt(iDig) ;
88fb5e50	167	}
88fb5e50	168	}
88fb5e50	169	}
c0394bfb	170	else{ //no pair - remove
	171	// temporary fix for dead LG channels
	172	Int_t absId=digHG->GetId() ;
	173	Int_t relId[4] ;
	174	fGeom->AbsToRelNumbering(absId,relId) ;
	175	if(relId[2]%2==1 && relId[3]%16==4)
	176	continue ;
	177	digits->RemoveAt(iDig) ;
	178	}
	179	}
	180
	181	CleanDigits(digits) ;
	182
	183	}
	184	//____________________________________________________________________________
	185	Double_t AliPHOSRawDigiProducer::CalibrateE(Double_t amp, Int_t* relId, Bool_t isLowGain)
	186	{
	187	// Convert EMC measured amplitude into real energy.
	188	// Calibration parameters are taken from calibration data base for raw data,
	189	// or from digitizer parameters for simulated data.
	190	if(fgCalibData){
	191	Int_t module = relId[0];
	192	Int_t column = relId[3];
	193	Int_t row = relId[2];
	194	if(relId[1]==0) { // this is EMC
	195	if(isLowGain){
	196	amp*= fgCalibData->GetHighLowRatioEmc(module,column,row);
88fb5e50	197	}
c0394bfb	198	amp *= fgCalibData->GetADCchannelEmc(module,column,row);
	199	return amp ;
	200	}
	201	}
	202	return 0;
	203	}
	204	//____________________________________________________________________________
	205	Double_t AliPHOSRawDigiProducer::CalibrateT(Double_t time, Int_t * relId, Bool_t /* isLowGain */)
	206	{
	207	//Calibrate time
	208	if(fgCalibData){
	209	Int_t module = relId[0];
	210	Int_t column = relId[3];
	211	Int_t row = relId[2];
	212	if(relId[1]==0) { // this is EMC
	213	time += fgCalibData->GetTimeShiftEmc(module,column,row);
	214	return time ;
	215	}
	216	}
	217
	218	return -999.;
	219	}
	220	//____________________________________________________________________________
	221	void AliPHOSRawDigiProducer::CleanDigits(TClonesArray * digits)
	222	{
	223	// remove digits with amplitudes below threshold.
	224	// remove digits in bad channels
	225	// sort digits with icreasing AbsId
	226
	227	//remove digits in bad map and below threshold
	228	Bool_t isBadMap = 0 ;
	229	if(fgCalibData->GetNumOfEmcBadChannels()){
	230	isBadMap=1 ;
	231	}
	232
	233	for(Int_t i=0; i<digits->GetEntriesFast(); i++){
	234	AliPHOSDigit * digit = static_cast<AliPHOSDigit*>(digits->At(i)) ;
	235	if(!digit)
	236	continue ;
	237	if ( (IsInEMC(digit) && digit->GetEnergy() < fEmcMinE) \|\|
	238	(IsInCPV(digit) && digit->GetEnergy() < fCpvMinE) ){
	239	digits->RemoveAt(i) ;
	240	continue ;
	241	}
	242	if(isBadMap){ //check bad map now
	243	Int_t relid[4] ;
	244	fGeom->AbsToRelNumbering(digit->GetId(), relid) ;
	245	if(fgCalibData->IsBadChannelEmc(relid[0],relid[2],relid[3])){
	246	digits->RemoveAt(i) ;
88fb5e50	247	}
88fb5e50	248	}
88fb5e50	249	}
88fb5e50	250
c0394bfb	251	//Compress, sort and set indexes
	252	digits->Compress() ;
	253	// digits->Sort(); already sorted earlier
	254	for (Int_t i = 0 ; i < digits->GetEntriesFast() ; i++) {
	255	AliPHOSDigit digit = static_cast<AliPHOSDigit>( digits->At(i) ) ;
	256	digit->SetIndexInList(i) ;
	257	}
	258	}
	259	//____________________________________________________________________________
	260	Bool_t AliPHOSRawDigiProducer::IsInEMC(AliPHOSDigit * digit) const
	261	{
	262	// Tells if (true) or not (false) the digit is in a PHOS-EMC module
	263	return digit->GetId() <= fEmcCrystals ;
	264
	265	}
	266
	267	//____________________________________________________________________________
	268	Bool_t AliPHOSRawDigiProducer::IsInCPV(AliPHOSDigit * digit) const
	269	{
	270	// Tells if (true) or not (false) the digit is in a PHOS-CPV module
	271	return digit->GetId() > fEmcCrystals ;
	272	}
	273	//____________________________________________________________________________
	274	void AliPHOSRawDigiProducer::GetCalibrationParameters()
	275	{
	276	// Set calibration parameters:
	277	// if calibration database exists, they are read from database,
	278	// otherwise, reconstruction stops in the constructor of AliPHOSCalibData
	279	//
	280	// It is a user responsilibity to open CDB before reconstruction, for example:
	281	// AliCDBStorage* storage = AliCDBManager::Instance()->GetStorage("local://CalibDB");
	282
	283	if (!fgCalibData){
	284	fgCalibData = new AliPHOSCalibData(-1); //use AliCDBManager's run number
	285	}
	286	if (fgCalibData->GetCalibDataEmc() == 0)
	287	AliFatal("Calibration parameters for PHOS EMC not found. Stop reconstruction.\n");
	288	if (fgCalibData->GetCalibDataCpv() == 0)
	289	AliFatal("Calibration parameters for PHOS CPV not found. Stop reconstruction.\n");
88fb5e50	290	}