[u/mrichter/AliRoot.git] / EMCAL / AliEMCALRawUtils.cxx

/**************************************************************************
 * Copyright(c) 1998-1999, 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.                  *
 **************************************************************************/

/* $Id$ */
/* History of cvs commits:
 *
 * $Log$
 * Revision 1.2  2007/09/03 20:55:35  jklay
 * EMCAL e-by-e reconstruction methods from Cvetan
 *
 * Revision 1.1  2007/03/17 19:56:38  mvl
 * Moved signal shape routines from AliEMCAL to separate class AliEMCALRawUtils to streamline raw data reconstruction code.
 * */

//*-- Author: Marco van Leeuwen (LBL)
#include "AliEMCALRawUtils.h"

#include "TF1.h"
#include "TGraph.h"
#include "TSystem.h"

#include "AliLog.h"
#include "AliRunLoader.h"
#include "AliCaloAltroMapping.h"
#include "AliAltroBuffer.h"
#include "AliRawReader.h"
#include "AliCaloRawStream.h"
#include "AliDAQ.h"

#include "AliEMCALLoader.h"
#include "AliEMCALGeometry.h"
#include "AliEMCALDigitizer.h"
#include "AliEMCALDigit.h"


ClassImp(AliEMCALRawUtils)

// Signal shape parameters
Int_t    AliEMCALRawUtils::fgOrder       = 2 ;      // Order of gamma function 
Double_t AliEMCALRawUtils::fgTimeMax     = 2.56E-5 ;  // each sample is over 100 ns fTimeMax/fTimeBins
Double_t AliEMCALRawUtils::fgTau         = 165E-9 ;   // 165 ns (from testbeam; not very accurate)
Double_t AliEMCALRawUtils::fgTimeTrigger = 1.5E-6 ;   // 15 time bins ~ 1.5 musec

// some digitization constants
Int_t    AliEMCALRawUtils::fgThreshold = 1;
Int_t    AliEMCALRawUtils::fgDDLPerSuperModule = 2;  // 2 ddls per SuperModule

AliEMCALRawUtils::AliEMCALRawUtils(): fHighLowGainFactor(0.) {
  fHighLowGainFactor = 16. ;          // adjusted for a low gain range of 82 GeV (10 bits) 
}
//____________________________________________________________________________
AliEMCALRawUtils::~AliEMCALRawUtils() {
}
//____________________________________________________________________________
void AliEMCALRawUtils::Digits2Raw()
{
  // convert digits of the current event to raw data
  
  AliRunLoader *rl = AliRunLoader::GetRunLoader();
  AliEMCALLoader *loader = dynamic_cast<AliEMCALLoader*>(rl->GetDetectorLoader("EMCAL"));

  // get the digits
  loader->LoadDigits("EMCAL");
  loader->GetEvent();
  TClonesArray* digits = loader->Digits() ;
  
  if (!digits) {
    Warning("Digits2Raw", "no digits found !");
    return;
  }
    
  // get the geometry
  AliEMCALGeometry* geom = AliEMCALGeometry::GetInstance();
  if (!geom) {
    AliError(Form("No geometry found !"));
    return;
  }
  
  static const Int_t nDDL = 12*2; // 12 SM hardcoded for now. Buffers allocated dynamically, when needed, so just need an upper limit here
  AliAltroBuffer* buffers[nDDL];
  for (Int_t i=0; i < nDDL; i++)
    buffers[i] = 0;

  Int_t adcValuesLow[fgkTimeBins];
  Int_t adcValuesHigh[fgkTimeBins];

  //Load Mapping RCU files once
  TString path = gSystem->Getenv("ALICE_ROOT");
  path += "/EMCAL/mapping/RCU";
  TString path0 = path+"0.data";//This file will change in future
  TString path1 = path+"1.data";//This file will change in future
  AliAltroMapping * mapping[2] ; // For the moment only 2
  mapping[0] = new AliCaloAltroMapping(path0.Data());
  mapping[1] = new AliCaloAltroMapping(path1.Data());

  // loop over digits (assume ordered digits)
  for (Int_t iDigit = 0; iDigit < digits->GetEntries(); iDigit++) {
    AliEMCALDigit* digit = dynamic_cast<AliEMCALDigit *>(digits->At(iDigit)) ;
    if (digit->GetAmp() < fgThreshold) 
      continue;

    //get cell indices
    Int_t nSM = 0;
    Int_t nIphi = 0;
    Int_t nIeta = 0;
    Int_t iphi = 0;
    Int_t ieta = 0;
    Int_t nModule = 0;
    geom->GetCellIndex(digit->GetId(), nSM, nModule, nIphi, nIeta);
    geom->GetCellPhiEtaIndexInSModule(nSM, nModule, nIphi, nIeta,iphi, ieta) ;
    
    //Check which is the RCU of the cell.
    Int_t iRCU = -111;
    //RCU0
    if (0<=iphi&&iphi<8) iRCU=0; // first cable row
    else if (8<=iphi&&iphi<16 && 0<=ieta&&ieta<24) iRCU=0; // first half; 
    //second cable row
    //RCU1
    else if(8<=iphi&&iphi<16 && 24<=ieta&&ieta<48) iRCU=1; // second half; 
    //second cable row
    else if(16<=iphi&&iphi<24) iRCU=1; // third cable row
    
    //Which DDL?
    Int_t iDDL = fgDDLPerSuperModule* nSM + iRCU;
    if (iDDL >= nDDL)
      Fatal("Digits2Raw()","Non-existent DDL board number: %d", iDDL);

    if (buffers[iDDL] == 0) {      
      // open new file and write dummy header
      TString fileName = AliDAQ::DdlFileName("EMCAL",iDDL);
      buffers[iDDL] = new AliAltroBuffer(fileName.Data(),mapping[iRCU]);
      buffers[iDDL]->WriteDataHeader(kTRUE, kFALSE);  //Dummy;
    }
    
    // out of time range signal (?)
    if (digit->GetTimeR() > GetRawFormatTimeMax() ) {
      AliInfo("Signal is out of time range.\n");
      buffers[iDDL]->FillBuffer((Int_t)digit->GetAmp());
      buffers[iDDL]->FillBuffer(GetRawFormatTimeBins() );  // time bin
      buffers[iDDL]->FillBuffer(3);          // bunch length      
      buffers[iDDL]->WriteTrailer(3, ieta, iphi, nSM);  // trailer
      // calculate the time response function
    } else {
      Bool_t lowgain = RawSampledResponse(digit->GetTimeR(), digit->GetAmp(), adcValuesHigh, adcValuesLow) ; 
      if (lowgain) 
	buffers[iDDL]->WriteChannel(ieta, iphi, 0, GetRawFormatTimeBins(), adcValuesLow, fgThreshold);
      else 
	buffers[iDDL]->WriteChannel(ieta,iphi, 1, GetRawFormatTimeBins(), adcValuesHigh, fgThreshold);
    }
  }
  
  // write headers and close files
  for (Int_t i=0; i < nDDL; i++) {
    if (buffers[i]) {
      buffers[i]->Flush();
      buffers[i]->WriteDataHeader(kFALSE, kFALSE);
      delete buffers[i];
    }
  }
  mapping[0]->Delete();
  mapping[1]->Delete();
  loader->UnloadDigits();
}

//____________________________________________________________________________
void AliEMCALRawUtils::Raw2Digits(AliRawReader* reader,TClonesArray *digitsArr)
{
  // convert raw data of the current event to digits
  AliEMCALGeometry * geom = AliEMCALGeometry::GetInstance();
  if (!geom) {
    AliError(Form("No geometry found !"));
    return;
  }

  digitsArr->Clear(); 

  if (!digitsArr) {
    Error("Raw2Digits", "no digits found !");
    return;
  }
  if (!reader) {
    Error("Raw2Digits", "no raw reader found !");
    return;
  }

  // Use AliAltroRawStream to read the ALTRO format.  No need to
  // reinvent the wheel :-) 
  AliCaloRawStream in(reader,"EMCAL");
  // Select EMCAL DDL's;
  reader->Select("EMCAL");

  // reading is from previously existing AliEMCALGetter.cxx
  // ReadRaw method
  TF1 * signalF = new TF1("signal", RawResponseFunction, 0, GetRawFormatTimeMax(), 4);
  signalF->SetParNames("Charge", "Gain", "Amplitude", "TimeZero"); 
  
  Int_t id =  -1;
  Int_t idigit = 0 ; 
  Double_t time = 0. ; 
  Double_t amp = 0. ; 

  TGraph * gSig = new TGraph(GetRawFormatTimeBins()) ; 

  Int_t eofReached = 0;
  Int_t lowGain = 0;

  in.Next(); // Go to first digit
  do {
    id =  geom->GetAbsCellIdFromCellIndexes(in.GetModule(), in.GetRow(), in.GetColumn()) ;
    lowGain = in.IsLowGain();
    gSig->SetPoint(in.GetTime(), 
		   in.GetTime()* GetRawFormatTimeMax() / GetRawFormatTimeBins(), 
		   in.GetSignal()) ;

    Int_t iTime = 1;
    do {
      if (!in.Next())
	eofReached = 1;
      else {
	gSig->SetPoint(in.GetTime(), 
		       in.GetTime()* GetRawFormatTimeMax() / GetRawFormatTimeBins(), 
		       in.GetSignal()) ;
      }
      iTime++;
    } while (!eofReached && !in.IsNewRow() && !in.IsNewColumn() && !in.IsNewModule());

    FitRaw(gSig, signalF, amp, time) ; 
    if (lowGain) 
      amp *= fHighLowGainFactor; 
    
    if (amp > 0) {
      AliDebug(2,Form("id %d amp %g", id, amp));
      new((*digitsArr)[idigit]) AliEMCALDigit( -1, -1, id, (Int_t)amp, time, idigit) ;	
	  idigit++ ; 
    }
    Int_t index ; 
	
    // Reset graph
    for (index = 0; index < GetRawFormatTimeBins(); index++) {
      gSig->SetPoint(index, index * GetRawFormatTimeMax() / GetRawFormatTimeBins(), 0) ;  
    } 
  } while (!eofReached); // EMCAL entries loop
  
  delete signalF ; 
  delete gSig;
  
  return ; 
}

//____________________________________________________________________________ 
void AliEMCALRawUtils::FitRaw(TGraph * gSig, TF1* signalF, Double_t & amp, Double_t & time)
{
  // Fits the raw signal time distribution; from AliEMCALGetter 

  const Int_t kNoiseThreshold = 0 ;
  Double_t timezero1 = 0., timezero2 = 0., timemax = 0. ;
  Double_t signal = 0., signalmax = 0. ;       
  amp = time = 0. ; 

  timezero1 = signalmax = timemax = 0. ;
  timezero1 = GetRawFormatTimeMax();
  timezero2 = 0;

  //  Find the time,the value and the index of the maximum

  Int_t indexmax = 0;
  for (Int_t index = 0; index < GetRawFormatTimeBins(); index++) {
    gSig->GetPoint(index, time, signal) ; 
    if (signal >= signalmax) {
      signalmax = signal ; 
      timemax   = time ;
      indexmax = index;
    }
  }

  if ( timemax < GetRawFormatTimeMax() * 0.4 ) { // else its noise 

    // Find the start time of the signal;
    for (Int_t index = indexmax; index >= 0; index--) {    
      gSig->GetPoint(index, time, signal) ; 
      
      if (signal>kNoiseThreshold) {
	timezero1 = time;
      }
      else break;
    }
    // Find the end time of the signal;
    for (Int_t index = indexmax; index < GetRawFormatTimeBins(); index++) {    
      gSig->GetPoint(index, time, signal) ; 
      if (signal>kNoiseThreshold) {
	timezero2 = time;
      }
      else break;
    }

    signalF->SetParameter(0, signalmax) ; 
    //    signalF->SetParameter(1, timemax) ; 
    signalF->SetParameter(1, 0.5*(timezero1+timezero2)) ; 
    gSig->Fit(signalF, "QRON", "", timezero1, timezero2); //, "QRON") ; 
    amp = signalF->GetParameter(0) ; 
    time = signalF->GetParameter(1) - fgTimeTrigger;
  }
  return;
}
//__________________________________________________________________
Double_t AliEMCALRawUtils::RawResponseFunction(Double_t *x, Double_t *par)
{
  // Shape of the electronics raw reponse:
  // It is a semi-gaussian, 2nd order Gamma function of the general form
  //
  // t' = (t - t0 + tau) / tau
  // F = A * t**N * exp( N * ( 1 - t) )   for t >= 0
  // F = 0                                for t < 0 
  //
  // parameters:
  // A:   par[0]   // Amplitude = peak value
  // t0:  par[1]
  // tau: fgTau
  // N:   fgOrder
  //
  Double_t signal ;
  Double_t xx = ( x[0] - par[1] + fgTau ) / fgTau ; 

  if (xx <= 0) 
    signal = 0. ;  
  else {  
    signal = par[0] * TMath::Power(xx , fgOrder) * TMath::Exp(fgOrder * (1 - xx )) ; 
  }
  return signal ;  
}

//__________________________________________________________________
Bool_t AliEMCALRawUtils::RawSampledResponse(
const Double_t dtime, const Double_t damp, Int_t * adcH, Int_t * adcL) const 
{
  // for a start time dtime and an amplitude damp given by digit, 
  // calculates the raw sampled response AliEMCAL::RawResponseFunction

  const Int_t kRawSignalOverflow = 0x3FF ; 
  Bool_t lowGain = kFALSE ; 

  TF1 signalF("signal", RawResponseFunction, 0, GetRawFormatTimeMax(), 4);
  signalF.SetParameter(0, damp) ; 
  signalF.SetParameter(1, dtime + fgTimeTrigger) ; 

  for (Int_t iTime = 0; iTime < GetRawFormatTimeBins(); iTime++) {
    Double_t time = iTime * GetRawFormatTimeMax() / GetRawFormatTimeBins() ;
    Double_t signal = signalF.Eval(time) ;     
    adcH[iTime] =  static_cast<Int_t>(signal + 0.5) ;
    if ( adcH[iTime] > kRawSignalOverflow ){  // larger than 10 bits 
      adcH[iTime] = kRawSignalOverflow ;
      lowGain = kTRUE ; 
    }

    signal /= fHighLowGainFactor;

    adcL[iTime] =  static_cast<Int_t>(signal + 0.5) ;
    if ( adcL[iTime] > kRawSignalOverflow)  // larger than 10 bits 
      adcL[iTime] = kRawSignalOverflow ;
  }
  return lowGain ; 
}
Commit	Line	Data
ee299369	1	/**************************************************************************
	2	* Copyright(c) 1998-1999, 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	/* History of cvs commits:
	18	*
c47157cd	19	* $Log$
5a056daa	20	* Revision 1.2 2007/09/03 20:55:35 jklay
	21	* EMCAL e-by-e reconstruction methods from Cvetan
	22	*
c47157cd	23	* Revision 1.1 2007/03/17 19:56:38 mvl
	24	* Moved signal shape routines from AliEMCAL to separate class AliEMCALRawUtils to streamline raw data reconstruction code.
	25	* */
ee299369	26
	27	//*-- Author: Marco van Leeuwen (LBL)
	28	#include "AliEMCALRawUtils.h"
	29
	30	#include "TF1.h"
	31	#include "TGraph.h"
	32	#include "TSystem.h"
	33
	34	#include "AliLog.h"
	35	#include "AliRunLoader.h"
	36	#include "AliCaloAltroMapping.h"
	37	#include "AliAltroBuffer.h"
	38	#include "AliRawReader.h"
	39	#include "AliCaloRawStream.h"
	40	#include "AliDAQ.h"
	41
	42	#include "AliEMCALLoader.h"
	43	#include "AliEMCALGeometry.h"
	44	#include "AliEMCALDigitizer.h"
	45	#include "AliEMCALDigit.h"
	46
	47
	48	ClassImp(AliEMCALRawUtils)
	49
	50	// Signal shape parameters
	51	Int_t AliEMCALRawUtils::fgOrder = 2 ; // Order of gamma function
	52	Double_t AliEMCALRawUtils::fgTimeMax = 2.56E-5 ; // each sample is over 100 ns fTimeMax/fTimeBins
	53	Double_t AliEMCALRawUtils::fgTau = 165E-9 ; // 165 ns (from testbeam; not very accurate)
	54	Double_t AliEMCALRawUtils::fgTimeTrigger = 1.5E-6 ; // 15 time bins ~ 1.5 musec
	55
	56	// some digitization constants
	57	Int_t AliEMCALRawUtils::fgThreshold = 1;
	58	Int_t AliEMCALRawUtils::fgDDLPerSuperModule = 2; // 2 ddls per SuperModule
	59
	60	AliEMCALRawUtils::AliEMCALRawUtils(): fHighLowGainFactor(0.) {
	61	fHighLowGainFactor = 16. ; // adjusted for a low gain range of 82 GeV (10 bits)
	62	}
	63	//____________________________________________________________________________
	64	AliEMCALRawUtils::~AliEMCALRawUtils() {
	65	}
	66	//____________________________________________________________________________
	67	void AliEMCALRawUtils::Digits2Raw()
	68	{
	69	// convert digits of the current event to raw data
	70
	71	AliRunLoader *rl = AliRunLoader::GetRunLoader();
	72	AliEMCALLoader loader = dynamic_cast<AliEMCALLoader>(rl->GetDetectorLoader("EMCAL"));
	73
	74	// get the digits
	75	loader->LoadDigits("EMCAL");
	76	loader->GetEvent();
	77	TClonesArray* digits = loader->Digits() ;
	78
	79	if (!digits) {
	80	Warning("Digits2Raw", "no digits found !");
	81	return;
	82	}
	83
	84	// get the geometry
	85	AliEMCALGeometry* geom = AliEMCALGeometry::GetInstance();
	86	if (!geom) {
	87	AliError(Form("No geometry found !"));
	88	return;
	89	}
90
91	static const Int_t nDDL = 12*2; // 12 SM hardcoded for now. Buffers allocated dynamically, when needed, so just need an upper limit here
92	AliAltroBuffer* buffers[nDDL];
93	for (Int_t i=0; i < nDDL; i++)
94	buffers[i] = 0;
95
96	Int_t adcValuesLow[fgkTimeBins];
97	Int_t adcValuesHigh[fgkTimeBins];
98
99	//Load Mapping RCU files once
100	TString path = gSystem->Getenv("ALICE_ROOT");
101	path += "/EMCAL/mapping/RCU";
102	TString path0 = path+"0.data";//This file will change in future
103	TString path1 = path+"1.data";//This file will change in future
104	AliAltroMapping * mapping[2] ; // For the moment only 2
105	mapping[0] = new AliCaloAltroMapping(path0.Data());
106	mapping[1] = new AliCaloAltroMapping(path1.Data());
107
108	// loop over digits (assume ordered digits)
109	for (Int_t iDigit = 0; iDigit < digits->GetEntries(); iDigit++) {
110	AliEMCALDigit* digit = dynamic_cast<AliEMCALDigit *>(digits->At(iDigit)) ;
111	if (digit->GetAmp() < fgThreshold)
112	continue;
113
114	//get cell indices
115	Int_t nSM = 0;
116	Int_t nIphi = 0;
117	Int_t nIeta = 0;
118	Int_t iphi = 0;
119	Int_t ieta = 0;
120	Int_t nModule = 0;
121	geom->GetCellIndex(digit->GetId(), nSM, nModule, nIphi, nIeta);
122	geom->GetCellPhiEtaIndexInSModule(nSM, nModule, nIphi, nIeta,iphi, ieta) ;
123
124	//Check which is the RCU of the cell.
125	Int_t iRCU = -111;
126	//RCU0
127	if (0<=iphi&&iphi<8) iRCU=0; // first cable row
128	else if (8<=iphi&&iphi<16 && 0<=ieta&&ieta<24) iRCU=0; // first half;
129	//second cable row
130	//RCU1
131	else if(8<=iphi&&iphi<16 && 24<=ieta&&ieta<48) iRCU=1; // second half;
132	//second cable row
133	else if(16<=iphi&&iphi<24) iRCU=1; // third cable row
134
135	//Which DDL?
136	Int_t iDDL = fgDDLPerSuperModule* nSM + iRCU;
137	if (iDDL >= nDDL)
138	Fatal("Digits2Raw()","Non-existent DDL board number: %d", iDDL);
139
140	if (buffers[iDDL] == 0) {
141	// open new file and write dummy header
142	TString fileName = AliDAQ::DdlFileName("EMCAL",iDDL);
143	buffers[iDDL] = new AliAltroBuffer(fileName.Data(),mapping[iRCU]);
144	buffers[iDDL]->WriteDataHeader(kTRUE, kFALSE); //Dummy;
145	}
146
147	// out of time range signal (?)
148	if (digit->GetTimeR() > GetRawFormatTimeMax() ) {
149	AliInfo("Signal is out of time range.\n");
150	buffers[iDDL]->FillBuffer((Int_t)digit->GetAmp());
151	buffers[iDDL]->FillBuffer(GetRawFormatTimeBins() ); // time bin
152	buffers[iDDL]->FillBuffer(3); // bunch length
153	buffers[iDDL]->WriteTrailer(3, ieta, iphi, nSM); // trailer
154	// calculate the time response function
155	} else {
156	Bool_t lowgain = RawSampledResponse(digit->GetTimeR(), digit->GetAmp(), adcValuesHigh, adcValuesLow) ;
157	if (lowgain)
158	buffers[iDDL]->WriteChannel(ieta, iphi, 0, GetRawFormatTimeBins(), adcValuesLow, fgThreshold);
159	else
160	buffers[iDDL]->WriteChannel(ieta,iphi, 1, GetRawFormatTimeBins(), adcValuesHigh, fgThreshold);
161	}
162	}
163
164	// write headers and close files
165	for (Int_t i=0; i < nDDL; i++) {
166	if (buffers[i]) {
167	buffers[i]->Flush();
168	buffers[i]->WriteDataHeader(kFALSE, kFALSE);
169	delete buffers[i];
170	}
171	}
172	mapping[0]->Delete();
173	mapping[1]->Delete();
174	loader->UnloadDigits();
175	}
176
177	//____________________________________________________________________________
c47157cd	178	void AliEMCALRawUtils::Raw2Digits(AliRawReader* reader,TClonesArray *digitsArr)
ee299369	179	{
	180	// convert raw data of the current event to digits
	181	AliEMCALGeometry * geom = AliEMCALGeometry::GetInstance();
	182	if (!geom) {
	183	AliError(Form("No geometry found !"));
	184	return;
	185	}
	186
c47157cd	187	digitsArr->Clear();
ee299369	188
c47157cd	189	if (!digitsArr) {
ee299369	190	Error("Raw2Digits", "no digits found !");
	191	return;
	192	}
	193	if (!reader) {
	194	Error("Raw2Digits", "no raw reader found !");
	195	return;
	196	}
	197
	198	// Use AliAltroRawStream to read the ALTRO format. No need to
	199	// reinvent the wheel :-)
	200	AliCaloRawStream in(reader,"EMCAL");
	201	// Select EMCAL DDL's;
	202	reader->Select("EMCAL");
	203
	204	// reading is from previously existing AliEMCALGetter.cxx
	205	// ReadRaw method
	206	TF1 * signalF = new TF1("signal", RawResponseFunction, 0, GetRawFormatTimeMax(), 4);
	207	signalF->SetParNames("Charge", "Gain", "Amplitude", "TimeZero");
	208
	209	Int_t id = -1;
	210	Int_t idigit = 0 ;
	211	Double_t time = 0. ;
	212	Double_t amp = 0. ;
	213
	214	TGraph * gSig = new TGraph(GetRawFormatTimeBins()) ;
	215
	216	Int_t eofReached = 0;
	217	Int_t lowGain = 0;
	218
	219	in.Next(); // Go to first digit
	220	do {
	221	id = geom->GetAbsCellIdFromCellIndexes(in.GetModule(), in.GetRow(), in.GetColumn()) ;
	222	lowGain = in.IsLowGain();
	223	gSig->SetPoint(in.GetTime(),
	224	in.GetTime()* GetRawFormatTimeMax() / GetRawFormatTimeBins(),
	225	in.GetSignal()) ;
	226
	227	Int_t iTime = 1;
	228	do {
	229	if (!in.Next())
	230	eofReached = 1;
	231	else {
	232	gSig->SetPoint(in.GetTime(),
	233	in.GetTime()* GetRawFormatTimeMax() / GetRawFormatTimeBins(),
	234	in.GetSignal()) ;
	235	}
	236	iTime++;
	237	} while (!eofReached && !in.IsNewRow() && !in.IsNewColumn() && !in.IsNewModule());
	238
	239	FitRaw(gSig, signalF, amp, time) ;
	240	if (lowGain)
	241	amp *= fHighLowGainFactor;
	242
	243	if (amp > 0) {
	244	AliDebug(2,Form("id %d amp %g", id, amp));
c47157cd	245	new((*digitsArr)[idigit]) AliEMCALDigit( -1, -1, id, (Int_t)amp, time, idigit) ;
ee299369	246	idigit++ ;
	247	}
	248	Int_t index ;
	249
	250	// Reset graph
	251	for (index = 0; index < GetRawFormatTimeBins(); index++) {
	252	gSig->SetPoint(index, index * GetRawFormatTimeMax() / GetRawFormatTimeBins(), 0) ;
	253	}
	254	} while (!eofReached); // EMCAL entries loop
	255
	256	delete signalF ;
	257	delete gSig;
	258
	259	return ;
	260	}
	261
	262	//____________________________________________________________________________
	263	void AliEMCALRawUtils::FitRaw(TGraph * gSig, TF1* signalF, Double_t & amp, Double_t & time)
	264	{
	265	// Fits the raw signal time distribution; from AliEMCALGetter
	266
	267	const Int_t kNoiseThreshold = 0 ;
	268	Double_t timezero1 = 0., timezero2 = 0., timemax = 0. ;
	269	Double_t signal = 0., signalmax = 0. ;
	270	amp = time = 0. ;
	271
	272	timezero1 = signalmax = timemax = 0. ;
5a056daa	273	timezero1 = GetRawFormatTimeMax();
	274	timezero2 = 0;
	275
	276	// Find the time,the value and the index of the maximum
	277
	278	Int_t indexmax = 0;
	279	for (Int_t index = 0; index < GetRawFormatTimeBins(); index++) {
ee299369	280	gSig->GetPoint(index, time, signal) ;
5a056daa	281	if (signal >= signalmax) {
ee299369	282	signalmax = signal ;
5a056daa	283	timemax = time ;
5a056daa	284	indexmax = index;
ee299369	285	}
	286	}
	287
	288	if ( timemax < GetRawFormatTimeMax() * 0.4 ) { // else its noise
5a056daa	289
	290	// Find the start time of the signal;
	291	for (Int_t index = indexmax; index >= 0; index--) {
	292	gSig->GetPoint(index, time, signal) ;
	293
	294	if (signal>kNoiseThreshold) {
	295	timezero1 = time;
	296	}
	297	else break;
	298	}
	299	// Find the end time of the signal;
	300	for (Int_t index = indexmax; index < GetRawFormatTimeBins(); index++) {
	301	gSig->GetPoint(index, time, signal) ;
	302	if (signal>kNoiseThreshold) {
	303	timezero2 = time;
	304	}
	305	else break;
	306	}
	307
ee299369	308	signalF->SetParameter(0, signalmax) ;
5a056daa	309	// signalF->SetParameter(1, timemax) ;
	310	signalF->SetParameter(1, 0.5*(timezero1+timezero2)) ;
	311	gSig->Fit(signalF, "QRON", "", timezero1, timezero2); //, "QRON") ;
ee299369	312	amp = signalF->GetParameter(0) ;
	313	time = signalF->GetParameter(1) - fgTimeTrigger;
	314	}
	315	return;
	316	}
	317	//__________________________________________________________________
	318	Double_t AliEMCALRawUtils::RawResponseFunction(Double_t x, Double_t par)
	319	{
	320	// Shape of the electronics raw reponse:
	321	// It is a semi-gaussian, 2nd order Gamma function of the general form
	322	//
	323	// t' = (t - t0 + tau) / tau
	324	// F = A * t*N exp( N * ( 1 - t) ) for t >= 0
	325	// F = 0 for t < 0
	326	//
	327	// parameters:
	328	// A: par[0] // Amplitude = peak value
	329	// t0: par[1]
	330	// tau: fgTau
	331	// N: fgOrder
	332	//
	333	Double_t signal ;
	334	Double_t xx = ( x[0] - par[1] + fgTau ) / fgTau ;
	335
5a056daa	336	if (xx <= 0)
ee299369	337	signal = 0. ;
	338	else {
	339	signal = par[0] * TMath::Power(xx , fgOrder) * TMath::Exp(fgOrder * (1 - xx )) ;
	340	}
	341	return signal ;
	342	}
	343
	344	//__________________________________________________________________
	345	Bool_t AliEMCALRawUtils::RawSampledResponse(
	346	const Double_t dtime, const Double_t damp, Int_t * adcH, Int_t * adcL) const
	347	{
	348	// for a start time dtime and an amplitude damp given by digit,
	349	// calculates the raw sampled response AliEMCAL::RawResponseFunction
	350
	351	const Int_t kRawSignalOverflow = 0x3FF ;
	352	Bool_t lowGain = kFALSE ;
	353
	354	TF1 signalF("signal", RawResponseFunction, 0, GetRawFormatTimeMax(), 4);
	355	signalF.SetParameter(0, damp) ;
	356	signalF.SetParameter(1, dtime + fgTimeTrigger) ;
	357
	358	for (Int_t iTime = 0; iTime < GetRawFormatTimeBins(); iTime++) {
	359	Double_t time = iTime * GetRawFormatTimeMax() / GetRawFormatTimeBins() ;
	360	Double_t signal = signalF.Eval(time) ;
	361	adcH[iTime] = static_cast<Int_t>(signal + 0.5) ;
	362	if ( adcH[iTime] > kRawSignalOverflow ){ // larger than 10 bits
	363	adcH[iTime] = kRawSignalOverflow ;
	364	lowGain = kTRUE ;
	365	}
	366
	367	signal /= fHighLowGainFactor;
	368
	369	adcL[iTime] = static_cast<Int_t>(signal + 0.5) ;
	370	if ( adcL[iTime] > kRawSignalOverflow) // larger than 10 bits
	371	adcL[iTime] = kRawSignalOverflow ;
	372	}
	373	return lowGain ;
	374	}