[u/mrichter/AliRoot.git] / T0 / AliT0CalibTimeEq.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.                  *
 **************************************************************************/

/* $Id$ */

///////////////////////////////////////////////////////////////////////////////
//                                                                           //
// class for T0 calibration                       TM-AC-AM_6-02-2006  
// equalize time shift for each time CFD channel
//                                                                           //
///////////////////////////////////////////////////////////////////////////////

#include "AliT0CalibTimeEq.h"
#include "AliLog.h"
#include <TFile.h>
#include <TMath.h>
#include <TF1.h>
#include <TSpectrum.h>
#include <TProfile.h>
#include <iostream>

ClassImp(AliT0CalibTimeEq)

//________________________________________________________________
  AliT0CalibTimeEq::AliT0CalibTimeEq():TNamed(),
				       fMeanVertex(0),        
				       fRmsVertex(0)      
{
  //

}

//________________________________________________________________
AliT0CalibTimeEq::AliT0CalibTimeEq(const char* name):TNamed(),
				       fMeanVertex(0),        
				       fRmsVertex(0)      
{
  //constructor

  TString namst = "Calib_";
  namst += name;
  SetName(namst.Data());
  SetTitle(namst.Data());
}

//________________________________________________________________
AliT0CalibTimeEq::AliT0CalibTimeEq(const AliT0CalibTimeEq& calibda):TNamed(calibda),		
				       fMeanVertex(0),        
				       fRmsVertex(0)      
{
// copy constructor
  SetName(calibda.GetName());
  SetTitle(calibda.GetName());


}

//________________________________________________________________
AliT0CalibTimeEq &AliT0CalibTimeEq::operator =(const AliT0CalibTimeEq& calibda)
{
// assignment operator
  SetName(calibda.GetName());
  SetTitle(calibda.GetName());
 
  return *this;
}

//________________________________________________________________
AliT0CalibTimeEq::~AliT0CalibTimeEq()
{
  //
  // destrictor
}
//________________________________________________________________
void AliT0CalibTimeEq::Reset()
{
  //reset values

  memset(fCFDvalue,0,120*sizeof(Float_t));
  memset(fTimeEq,1,24*sizeof(Float_t));
}


//________________________________________________________________
void  AliT0CalibTimeEq::Print(Option_t*) const
{
  // print time values

  printf("\n	----	PM Arrays	----\n\n");
  printf(" Time delay CFD \n");
  for (Int_t i=0; i<24; i++) printf(" CFD  %f ",fTimeEq[i]);
  printf("\n Mean Vertex %f \n", fMeanVertex);
} 


//________________________________________________________________
Bool_t AliT0CalibTimeEq::ComputeOnlineParams(const char* filePhys)
{
  // compute online equalized time
  Float_t meandiff, sigmadiff, meanver, meancfdtime, sigmacfdtime;
  meandiff = sigmadiff =  meanver = meancfdtime = sigmacfdtime =0;
  Double_t rmsver=0;
  Int_t nent=0;
  Bool_t ok=false;
  gFile = TFile::Open(filePhys);
  if(!gFile) {
    AliError("No input PHYS data found ");
  }
  else
    {
      ok=true;
      for (Int_t i=0; i<24; i++)
	{
	  meandiff = sigmadiff =  meanver = meancfdtime = sigmacfdtime =0;
	  TH1F *cfd = (TH1F*) gFile->Get(Form("CFD1minCFD%d",i+1));
	  TH1F *cfdtime = (TH1F*) gFile->Get(Form("CFD%d",i+1));
	  if(!cfd) AliWarning(Form("no Diff histograms collected by PHYS DA for channel %i", i));
	  if(cfd) {
	    nent = Int_t(cfd->GetEntries());
	    if(nent>500 )  {
	      if(cfd->GetRMS()>1.5 &&  cfd->GetRMS()<20)
		GetMeanAndSigma(cfd, meandiff, sigmadiff);
	      if(cfd->GetRMS()<=1.5) 
		{
		  meandiff = cfd->GetMean();
		  sigmadiff=cfd->GetRMS();
		}
	      
	      if(cfd->GetRMS()>20) 
		{
		  ok=false;
		  AliWarning(Form("Data is not good  in PMT %i - mean %f rsm %f nentries %i", i,meandiff,sigmadiff , nent));
		}
	    }
	    else 
	      {
		ok=false;
		AliWarning(Form(" Not  enouph data in PMT %i- PMT1:  %i ", i, nent));
	      }
	    if(!cfd) AliWarning(Form("no CFD histograms collected by PHYS DA for channel %i", i));
	  }
	    //      printf(" i = %d buf1 = %s\n", i, buf1);
	  if(cfdtime) {
	    nent = Int_t(cfdtime->GetEntries());
	    if(nent>500 )  {
	      if(cfdtime->GetRMS()>1.5 )
		GetMeanAndSigma(cfdtime,meancfdtime, sigmacfdtime);
	      if(cfdtime->GetRMS()<=1.5) 
		{
		  meancfdtime = cfdtime->GetMean();
		  sigmacfdtime = cfdtime->GetRMS();
		}
	      if(sigmacfdtime>50 ) 
		{
		  ok=false;
		  AliWarning(Form("Data is not good enouph in PMT %i  - meancfdtime %f rsm %f nentries %i", i,meancfdtime, sigmacfdtime, nent));
		}
	    }
	  }
	  else 
	    {
	      ok=false;
	      AliWarning(Form(" Not  enouph data in PMT in CFD peak %i - %i ", i, nent));
	    }
	  //	  printf(" %i %f %f %f %f \n",i, meandiff, sigmadiff, meancfdtime, sigmacfdtime);
	  SetTimeEq(i,meandiff);
	  SetTimeEqRms(i,sigmadiff);
	  SetCFDvalue(i,0,meancfdtime);
	  SetCFDvalue(i,0,sigmacfdtime);
	  if (cfd) delete cfd;
	  if (cfdtime) delete cfdtime;

	}
      TH1F *ver = (TH1F*) gFile->Get("hVertex");
      if(!ver) AliWarning("no T0 histogram collected by PHYS DA ");
      if(ver) {
	meanver = ver->GetMean();
	rmsver = ver->GetRMS();
      }
      SetMeanVertex(meanver);
      SetRmsVertex(rmsver);
      
      gFile->Close();
      delete gFile;

    }
    return ok; 
}

//________________________________________________________________
Bool_t AliT0CalibTimeEq::ComputeOfflineParams(const char* filePhys, Float_t *timecdb, Int_t badpmt)
{
  // compute online equalized time
  Float_t meandiff, sigmadiff, meanver, meancfdtime, sigmacfdtime;
  meandiff = sigmadiff =  meanver = meancfdtime = sigmacfdtime =0;
  Double_t rmsver=0;
  Int_t nent=0;
  Bool_t ok=false;
  gFile = TFile::Open(filePhys);
  if(!gFile) {
    AliError("No input PHYS data found ");
  }
  else
    {
      meandiff = sigmadiff =  meanver = meancfdtime = sigmacfdtime =0;
      ok=true;
    TDirectory *dr = (TDirectory*) gFile->Get("T0Calib");
    TObjArray * TzeroObj = (TObjArray*) dr->Get("fTzeroObject");
       for (Int_t i=0; i<24; i++)
	{
	  if (i != badpmt) {
	  TH1F *cfddiff = (TH1F*)TzeroObj->At(i);
	  TH1F *cfdtime = (TH1F*)TzeroObj->At(i+24);
	  if(!cfddiff) AliWarning(Form("no Diff histograms collected by PHYS DA for channel %i", i));
	  //      printf(" i = %d buf1 = %s\n", i, buf1);
	  if(cfddiff) {
	    nent = Int_t(cfddiff->GetEntries());
	    if(nent>10 )  {
	      if(cfddiff->GetRMS()>1.5 &&  cfddiff->GetRMS()<30)
		GetMeanAndSigma(cfddiff, meandiff, sigmadiff);
	      if(cfddiff->GetRMS()<=1.5) 
		{
		  meandiff = cfddiff->GetMean();
		  sigmadiff = cfddiff->GetRMS();
		}
	      //   printf(" ipmt %i meandiff %f sigmadiff %f mean %f rms %f\n", i, meandiff,sigmadiff,cfddiff->GetMean(),  cfddiff->GetRMS() );
	      
	      if(sigmadiff > 30) 
		{
		  ok=false;
		  AliWarning(Form("Data is not good  in PMT %i - mean %f rsm %f nentries %i", i,meandiff,sigmadiff , nent));
		}

	    }
	    else 
	      {
		ok=false;
		AliWarning(Form(" Not  enouph data in PMT %i- PMT1:  %i ", i, nent));
	      }
	  }	    
	  if(cfdtime) {
	    nent = Int_t(cfdtime->GetEntries());
	    if(nent>10 )  {
	      if(cfdtime->GetRMS()>1.5 )
		GetMeanAndSigma(cfdtime,meancfdtime, sigmacfdtime);
	      if(cfdtime->GetRMS()<=1.5) 
		{
		  meancfdtime = cfdtime->GetMean();
		  sigmacfdtime=cfdtime->GetRMS();
		}
	      if(sigmacfdtime>50) 
		{
		  ok=false;
		  AliWarning(Form("Data is not good enouph in PMT %i  - meancfdtime %f rsm %f nentries %i", i,meancfdtime, sigmacfdtime, nent));
		}
	    }
	    else 
	      {
		ok=false;
		AliWarning(Form(" Not  enouph data in PMT in CFD peak %i - %i ", i, nent));
	      }
	  }
	  SetTimeEq(i,timecdb[i] + meandiff);
	  SetTimeEqRms(i,sigmadiff);
	  SetCFDvalue(i,0,meancfdtime);
	  SetCFDvalue(i,0,sigmacfdtime);
	  if (cfddiff) delete cfddiff;
	  if (cfdtime) delete cfdtime;
	  } //bad pmt
	}
      TH1F *ver = (TH1F*) gFile->Get("hVertex");
      if(!ver) AliWarning("no T0 histogram collected by PHYS DA ");
      if(ver) {
	meanver = ver->GetMean();
	rmsver = ver->GetRMS();
      }
      SetMeanVertex(meanver);
      SetRmsVertex(rmsver);
      
      gFile->Close();
      delete gFile;

    }
    return ok; 
   }

//________________________________________________________________________
void AliT0CalibTimeEq::GetMeanAndSigma(TH1F* hist,  Float_t &mean, Float_t &sigma) {

  const double window = 5.;  //fit window 
 
  double meanEstimate, sigmaEstimate; 
  int maxBin;
  maxBin        =  hist->GetMaximumBin(); //position of maximum
  meanEstimate  =  hist->GetBinCenter( maxBin); // mean of gaussian sitting in maximum
  sigmaEstimate = hist->GetRMS();
  TF1* fit= new TF1("fit","gaus", meanEstimate - window*sigmaEstimate, meanEstimate + window*sigmaEstimate);
  fit->SetParameters(hist->GetBinContent(maxBin), meanEstimate, sigmaEstimate);
  hist->Fit("fit","RQ","Q");

  mean  = (Float_t) fit->GetParameter(1);
  sigma = (Float_t) fit->GetParameter(2);

  delete fit;
}
Commit	Line	Data
a2ad8166	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
	18	///////////////////////////////////////////////////////////////////////////////
	19	// //
59b8a5fc	20	// class for T0 calibration TM-AC-AM_6-02-2006
59b8a5fc	21	// equalize time shift for each time CFD channel
a2ad8166	22	// //
	23	///////////////////////////////////////////////////////////////////////////////
	24
	25	#include "AliT0CalibTimeEq.h"
e47b556f	26	#include "AliLog.h"
a2ad8166	27	#include <TFile.h>
	28	#include <TMath.h>
	29	#include <TF1.h>
a2ad8166	30	#include <TSpectrum.h>
a2ad8166	31	#include <TProfile.h>
c61a7285	32	#include <iostream>
a2ad8166	33
	34	ClassImp(AliT0CalibTimeEq)
	35
	36	//________________________________________________________________
eef60a6a	37	AliT0CalibTimeEq::AliT0CalibTimeEq():TNamed(),
	38	fMeanVertex(0),
	39	fRmsVertex(0)
a2ad8166	40	{
a2ad8166	41	//
b95e8d87	42
a2ad8166	43	}
	44
	45	//________________________________________________________________
eef60a6a	46	AliT0CalibTimeEq::AliT0CalibTimeEq(const char* name):TNamed(),
	47	fMeanVertex(0),
	48	fRmsVertex(0)
a2ad8166	49	{
59b8a5fc	50	//constructor
59b8a5fc	51
a2ad8166	52	TString namst = "Calib_";
	53	namst += name;
	54	SetName(namst.Data());
	55	SetTitle(namst.Data());
	56	}
	57
	58	//________________________________________________________________
eef60a6a	59	AliT0CalibTimeEq::AliT0CalibTimeEq(const AliT0CalibTimeEq& calibda):TNamed(calibda),
	60	fMeanVertex(0),
	61	fRmsVertex(0)
a2ad8166	62	{
	63	// copy constructor
	64	SetName(calibda.GetName());
	65	SetTitle(calibda.GetName());
	66
	67
	68	}
	69
	70	//________________________________________________________________
	71	AliT0CalibTimeEq &AliT0CalibTimeEq::operator =(const AliT0CalibTimeEq& calibda)
	72	{
	73	// assignment operator
	74	SetName(calibda.GetName());
	75	SetTitle(calibda.GetName());
	76
	77	return *this;
	78	}
	79
	80	//________________________________________________________________
	81	AliT0CalibTimeEq::~AliT0CalibTimeEq()
	82	{
	83	//
59b8a5fc	84	// destrictor
a2ad8166	85	}
	86	//________________________________________________________________
	87	void AliT0CalibTimeEq::Reset()
	88	{
59b8a5fc	89	//reset values
59b8a5fc	90
a2ad8166	91	memset(fCFDvalue,0,120*sizeof(Float_t));
	92	memset(fTimeEq,1,24*sizeof(Float_t));
	93	}
	94
	95
	96	//________________________________________________________________
	97	void AliT0CalibTimeEq::Print(Option_t*) const
	98	{
59b8a5fc	99	// print time values
a2ad8166	100
	101	printf("\n ---- PM Arrays ----\n\n");
	102	printf(" Time delay CFD \n");
	103	for (Int_t i=0; i<24; i++) printf(" CFD %f ",fTimeEq[i]);
b95e8d87	104	printf("\n Mean Vertex %f \n", fMeanVertex);
a2ad8166	105	}
	106
	107
	108	//________________________________________________________________
02888358	109	Bool_t AliT0CalibTimeEq::ComputeOnlineParams(const char* filePhys)
a2ad8166	110	{
59b8a5fc	111	// compute online equalized time
1e7108ce	112	Float_t meandiff, sigmadiff, meanver, meancfdtime, sigmacfdtime;
c4ba15c3	113	meandiff = sigmadiff = meanver = meancfdtime = sigmacfdtime =0;
c4ba15c3	114	Double_t rmsver=0;
b5e0299c	115	Int_t nent=0;
02888358	116	Bool_t ok=false;
c2337900	117	gFile = TFile::Open(filePhys);
370867d2	118	if(!gFile) {
6318dd46	119	AliError("No input PHYS data found ");
	120	}
	121	else
	122	{
02888358	123	ok=true;
6318dd46	124	for (Int_t i=0; i<24; i++)
6318dd46	125	{
e691fec9	126	meandiff = sigmadiff = meanver = meancfdtime = sigmacfdtime =0;
1e7108ce	127	TH1F cfd = (TH1F) gFile->Get(Form("CFD1minCFD%d",i+1));
1e7108ce	128	TH1F cfdtime = (TH1F) gFile->Get(Form("CFD%d",i+1));
e691fec9	129	if(!cfd) AliWarning(Form("no Diff histograms collected by PHYS DA for channel %i", i));
eef60a6a	130	if(cfd) {
e691fec9	131	nent = Int_t(cfd->GetEntries());
	132	if(nent>500 ) {
	133	if(cfd->GetRMS()>1.5 && cfd->GetRMS()<20)
	134	GetMeanAndSigma(cfd, meandiff, sigmadiff);
	135	if(cfd->GetRMS()<=1.5)
	136	{
	137	meandiff = cfd->GetMean();
	138	sigmadiff=cfd->GetRMS();
	139	}
1e7108ce	140
e691fec9	141	if(cfd->GetRMS()>20)
	142	{
	143	ok=false;
	144	AliWarning(Form("Data is not good in PMT %i - mean %f rsm %f nentries %i", i,meandiff,sigmadiff , nent));
	145	}
1e7108ce	146	}
	147	else
	148	{
f824d160	149	ok=false;
e691fec9	150	AliWarning(Form(" Not enouph data in PMT %i- PMT1: %i ", i, nent));
1e7108ce	151	}
e691fec9	152	if(!cfd) AliWarning(Form("no CFD histograms collected by PHYS DA for channel %i", i));
1e7108ce	153	}
	154	// printf(" i = %d buf1 = %s\n", i, buf1);
	155	if(cfdtime) {
e691fec9	156	nent = Int_t(cfdtime->GetEntries());
e691fec9	157	if(nent>500 ) {
b5e0299c	158	if(cfdtime->GetRMS()>1.5 )
e691fec9	159	GetMeanAndSigma(cfdtime,meancfdtime, sigmacfdtime);
	160	if(cfdtime->GetRMS()<=1.5)
	161	{
	162	meancfdtime = cfdtime->GetMean();
	163	sigmacfdtime = cfdtime->GetRMS();
	164	}
b5e0299c	165	if(sigmacfdtime>50 )
e691fec9	166	{
b5e0299c	167	ok=false;
b5e0299c	168	AliWarning(Form("Data is not good enouph in PMT %i - meancfdtime %f rsm %f nentries %i", i,meancfdtime, sigmacfdtime, nent));
e691fec9	169	}
1e7108ce	170	}
	171	}
	172	else
	173	{
e691fec9	174	ok=false;
	175	AliWarning(Form(" Not enouph data in PMT in CFD peak %i - %i ", i, nent));
	176	}
	177	// printf(" %i %f %f %f %f \n",i, meandiff, sigmadiff, meancfdtime, sigmacfdtime);
1e7108ce	178	SetTimeEq(i,meandiff);
	179	SetTimeEqRms(i,sigmadiff);
	180	SetCFDvalue(i,0,meancfdtime);
	181	SetCFDvalue(i,0,sigmacfdtime);
	182	if (cfd) delete cfd;
	183	if (cfdtime) delete cfdtime;
	184
	185	}
	186	TH1F ver = (TH1F) gFile->Get("hVertex");
	187	if(!ver) AliWarning("no T0 histogram collected by PHYS DA ");
	188	if(ver) {
	189	meanver = ver->GetMean();
	190	rmsver = ver->GetRMS();
	191	}
	192	SetMeanVertex(meanver);
	193	SetRmsVertex(rmsver);
	194
	195	gFile->Close();
	196	delete gFile;
	197
	198	}
	199	return ok;
	200	}
	201
	202	//________________________________________________________________
b5e0299c	203	Bool_t AliT0CalibTimeEq::ComputeOfflineParams(const char* filePhys, Float_t *timecdb, Int_t badpmt)
1e7108ce	204	{
	205	// compute online equalized time
	206	Float_t meandiff, sigmadiff, meanver, meancfdtime, sigmacfdtime;
c4ba15c3	207	meandiff = sigmadiff = meanver = meancfdtime = sigmacfdtime =0;
c4ba15c3	208	Double_t rmsver=0;
1e7108ce	209	Int_t nent=0;
1e7108ce	210	Bool_t ok=false;
c4ba15c3	211	gFile = TFile::Open(filePhys);
1e7108ce	212	if(!gFile) {
	213	AliError("No input PHYS data found ");
	214	}
	215	else
	216	{
e691fec9	217	meandiff = sigmadiff = meanver = meancfdtime = sigmacfdtime =0;
1e7108ce	218	ok=true;
b5e0299c	219	TDirectory dr = (TDirectory) gFile->Get("T0Calib");
	220	TObjArray * TzeroObj = (TObjArray*) dr->Get("fTzeroObject");
	221	for (Int_t i=0; i<24; i++)
1e7108ce	222	{
b5e0299c	223	if (i != badpmt) {
1e7108ce	224	TH1F cfddiff = (TH1F)TzeroObj->At(i);
1e7108ce	225	TH1F cfdtime = (TH1F)TzeroObj->At(i+24);
e691fec9	226	if(!cfddiff) AliWarning(Form("no Diff histograms collected by PHYS DA for channel %i", i));
1e7108ce	227	// printf(" i = %d buf1 = %s\n", i, buf1);
1e7108ce	228	if(cfddiff) {
e691fec9	229	nent = Int_t(cfddiff->GetEntries());
b5e0299c	230	if(nent>10 ) {
b5e0299c	231	if(cfddiff->GetRMS()>1.5 && cfddiff->GetRMS()<30)
e691fec9	232	GetMeanAndSigma(cfddiff, meandiff, sigmadiff);
	233	if(cfddiff->GetRMS()<=1.5)
	234	{
	235	meandiff = cfddiff->GetMean();
	236	sigmadiff = cfddiff->GetRMS();
	237	}
b5e0299c	238	// printf(" ipmt %i meandiff %f sigmadiff %f mean %f rms %f\n", i, meandiff,sigmadiff,cfddiff->GetMean(), cfddiff->GetRMS() );
e691fec9	239
b5e0299c	240	if(sigmadiff > 30)
e691fec9	241	{
	242	ok=false;
	243	AliWarning(Form("Data is not good in PMT %i - mean %f rsm %f nentries %i", i,meandiff,sigmadiff , nent));
	244	}
b5e0299c	245
370867d2	246	}
370867d2	247	else
f824d160	248	{
f824d160	249	ok=false;
e691fec9	250	AliWarning(Form(" Not enouph data in PMT %i- PMT1: %i ", i, nent));
f824d160	251	}
e691fec9	252	}
1e7108ce	253	if(cfdtime) {
e691fec9	254	nent = Int_t(cfdtime->GetEntries());
b5e0299c	255	if(nent>10 ) {
b5e0299c	256	if(cfdtime->GetRMS()>1.5 )
e691fec9	257	GetMeanAndSigma(cfdtime,meancfdtime, sigmacfdtime);
	258	if(cfdtime->GetRMS()<=1.5)
	259	{
	260	meancfdtime = cfdtime->GetMean();
	261	sigmacfdtime=cfdtime->GetRMS();
	262	}
b5e0299c	263	if(sigmacfdtime>50)
e691fec9	264	{
	265	ok=false;
	266	AliWarning(Form("Data is not good enouph in PMT %i - meancfdtime %f rsm %f nentries %i", i,meancfdtime, sigmacfdtime, nent));
	267	}
1e7108ce	268	}
e691fec9	269	else
e691fec9	270	{
1e7108ce	271	ok=false;
e691fec9	272	AliWarning(Form(" Not enouph data in PMT in CFD peak %i - %i ", i, nent));
1e7108ce	273	}
eef60a6a	274	}
b5e0299c	275	SetTimeEq(i,timecdb[i] + meandiff);
1e7108ce	276	SetTimeEqRms(i,sigmadiff);
	277	SetCFDvalue(i,0,meancfdtime);
	278	SetCFDvalue(i,0,sigmacfdtime);
	279	if (cfddiff) delete cfddiff;
	280	if (cfdtime) delete cfdtime;
b5e0299c	281	} //bad pmt
6318dd46	282	}
b95e8d87	283	TH1F ver = (TH1F) gFile->Get("hVertex");
f824d160	284	if(!ver) AliWarning("no T0 histogram collected by PHYS DA ");
eef60a6a	285	if(ver) {
	286	meanver = ver->GetMean();
	287	rmsver = ver->GetRMS();
	288	}
b95e8d87	289	SetMeanVertex(meanver);
eef60a6a	290	SetRmsVertex(rmsver);
6318dd46	291
	292	gFile->Close();
	293	delete gFile;
02888358	294
6318dd46	295	}
02888358	296	return ok;
e691fec9	297	}
a2ad8166	298
1e7108ce	299	//________________________________________________________________________
	300	void AliT0CalibTimeEq::GetMeanAndSigma(TH1F* hist, Float_t &mean, Float_t &sigma) {
	301
1e7108ce	302	const double window = 5.; //fit window
1e7108ce	303
	304	double meanEstimate, sigmaEstimate;
	305	int maxBin;
	306	maxBin = hist->GetMaximumBin(); //position of maximum
	307	meanEstimate = hist->GetBinCenter( maxBin); // mean of gaussian sitting in maximum
	308	sigmaEstimate = hist->GetRMS();
	309	TF1* fit= new TF1("fit","gaus", meanEstimate - windowsigmaEstimate, meanEstimate + windowsigmaEstimate);
	310	fit->SetParameters(hist->GetBinContent(maxBin), meanEstimate, sigmaEstimate);
b5e0299c	311	hist->Fit("fit","RQ","Q");
1e7108ce	312
	313	mean = (Float_t) fit->GetParameter(1);
	314	sigma = (Float_t) fit->GetParameter(2);
	315
	316	delete fit;
	317	}
	318
8bfd9a3e	319