[u/mrichter/AliRoot.git] / T0 / AliT0CalibSeasonTimeShift.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: AliT0CalibSeasonTimeShift.cxx 42881 2010-08-16 10:59:14Z alla $ */

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

#include "AliT0CalibSeasonTimeShift.h"
#include "AliLog.h"
#include <TFile.h>
#include <TMath.h>
#include <TF1.h>
#include <TProfile.h>
#include <iostream>

ClassImp(AliT0CalibSeasonTimeShift)

//________________________________________________________________
  AliT0CalibSeasonTimeShift::AliT0CalibSeasonTimeShift():TNamed()
{
  //
  for (Int_t i=0; i<4; i++)
    fMeanPar[i] = fSigmaPar[i] = 0; 
}

//________________________________________________________________
AliT0CalibSeasonTimeShift::AliT0CalibSeasonTimeShift(const char* name):TNamed()
{
    //constructor
    
  TString namst = "Calib_";
  namst += name;
  SetName(namst.Data());
  SetTitle(namst.Data()); 
  
  for (Int_t i=0; i<4; i++)
    fMeanPar[i] = fSigmaPar[i] = 0; 
 
}

//________________________________________________________________
AliT0CalibSeasonTimeShift::AliT0CalibSeasonTimeShift(const AliT0CalibSeasonTimeShift& calibda):TNamed(calibda)		

{
// copy constructor
  SetName(calibda.GetName());
  SetTitle(calibda.GetName());
  ((AliT0CalibSeasonTimeShift &) calibda).Copy(*this);


}

//________________________________________________________________
AliT0CalibSeasonTimeShift &AliT0CalibSeasonTimeShift::operator =(const AliT0CalibSeasonTimeShift& calibda)
{
// assignment operator
  SetName(calibda.GetName());
  SetTitle(calibda.GetName());
  if (this != &calibda) ((AliT0CalibSeasonTimeShift &) calibda).Copy(*this);
 
  return *this;
}

//________________________________________________________________
AliT0CalibSeasonTimeShift::~AliT0CalibSeasonTimeShift()
{
  //
  // destrictor
}


//________________________________________________________________
void  AliT0CalibSeasonTimeShift::Print(Option_t*) const
{
  // print time values

  printf("\n	----	T0 results	----\n\n");
  printf(" (T0A+T0C)/2 = %f; T0A = %f; T0C = %f; resolution = %f  \n", fMeanPar[0], fMeanPar[1],fMeanPar[2],fMeanPar[3]);
  printf(" sigma(T0A+T0C)/2 = %f; sigma(T0 = %f; sigma(T0C) = %f; sigma(resolution) = %f  \n" , fSigmaPar[0], fSigmaPar[1], fSigmaPar[2],fSigmaPar[3]);
 
} 

//________________________________________________________________
Bool_t  AliT0CalibSeasonTimeShift::SetT0Par(Float_t par[4],Float_t spar[4])
{
  Bool_t ok=false;
 for (Int_t i=0; i<4; i++)
    {
      fMeanPar[i] = par[i];
      fSigmaPar[i] = spar[i];
      if ( fSigmaPar[i] == 0 ||  fSigmaPar[i] > 500) ok = false;
    }
 return ok;
}

//________________________________________________________________
Int_t AliT0CalibSeasonTimeShift::SetT0Par(const char* filePhys, Float_t *cdbtime)
{
  // compute online equalized time
  Float_t mean, sigma;
  Int_t ok = 0;
  TH1F *cfd = NULL;
  TObjArray * tzeroObj = NULL;

  gFile = TFile::Open(filePhys);
  if(!gFile) {
    AliError("No input PHYS data found ");
    ok = 2000;
  }
  else {
    //    gFile->ls();
    //    TDirectory *dr = (TDirectory*) gFile->Get("T0Calib");
    tzeroObj = dynamic_cast<TObjArray*>(gFile->Get("T0Calib"));
    TString histname[4]={"fTzeroORAplusORC", "fTzeroORA", "fTzeroORC",  "fResolution"};
    for (Int_t i=0; i<4; i++)
      {
	if(cfd) cfd->Reset();
	if(tzeroObj) 
	  cfd = (TH1F*)tzeroObj->FindObject( histname[i].Data());
	else
	  cfd =  (TH1F*)gFile ->Get(histname[i].Data());

	if(!cfd) {
	  ok=300;
	  AliError(Form("no histograms collected for %s", histname[i].Data()));
	  return ok;
	}
	if(cfd) {
	  if( cfd->GetEntries() == 0) {
	  ok=300;
	  AliError(Form("%s histogram is empty", histname[i].Data()));
	  return ok;
	  }
	    GetMeanAndSigma(cfd, mean, sigma);
	    if (sigma == 0 || sigma > 500 || cfd->GetEntries()<200 ){
	      ok = -100;
	      fMeanPar[i] = cdbtime[i];
	      fSigmaPar[i] = -1;
	    }
	    if ( sigma > 0 && sigma < 500 && cfd->GetEntries()>200)
	      { 
		fMeanPar[i] =   mean;
		fSigmaPar[i] = sigma;
	      }
	  }
      } 
  }
  gFile->Close();
  delete gFile;
  return ok;
}
//________________________________________________________________________
void AliT0CalibSeasonTimeShift::GetMeanAndSigma(TH1F* hist,  Float_t &mean, Float_t &sigma) {

  const double window =2.;  //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
	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: AliT0CalibSeasonTimeShift.cxx 42881 2010-08-16 10:59:14Z alla $ */
	17
	18	///////////////////////////////////////////////////////////////////////////////
	19	// //
	20	// class for T0 calibration TM-AC-AM_6-02-2006
	21	// equalize time shift for each time CFD channel
	22	// //
	23	///////////////////////////////////////////////////////////////////////////////
	24
	25	#include "AliT0CalibSeasonTimeShift.h"
	26	#include "AliLog.h"
	27	#include <TFile.h>
	28	#include <TMath.h>
	29	#include <TF1.h>
	30	#include <TProfile.h>
	31	#include <iostream>
	32
	33	ClassImp(AliT0CalibSeasonTimeShift)
	34
	35	//________________________________________________________________
	36	AliT0CalibSeasonTimeShift::AliT0CalibSeasonTimeShift():TNamed()
	37	{
	38	//
	39	for (Int_t i=0; i<4; i++)
	40	fMeanPar[i] = fSigmaPar[i] = 0;
	41	}
	42
	43	//________________________________________________________________
	44	AliT0CalibSeasonTimeShift::AliT0CalibSeasonTimeShift(const char* name):TNamed()
	45	{
	46	//constructor
	47
	48	TString namst = "Calib_";
	49	namst += name;
	50	SetName(namst.Data());
	51	SetTitle(namst.Data());
	52
	53	for (Int_t i=0; i<4; i++)
	54	fMeanPar[i] = fSigmaPar[i] = 0;
	55
	56	}
	57
	58	//________________________________________________________________
	59	AliT0CalibSeasonTimeShift::AliT0CalibSeasonTimeShift(const AliT0CalibSeasonTimeShift& calibda):TNamed(calibda)
	60
	61	{
	62	// copy constructor
	63	SetName(calibda.GetName());
	64	SetTitle(calibda.GetName());
	65	((AliT0CalibSeasonTimeShift &) calibda).Copy(*this);
	66
	67
	68	}
	69
	70	//________________________________________________________________
	71	AliT0CalibSeasonTimeShift &AliT0CalibSeasonTimeShift::operator =(const AliT0CalibSeasonTimeShift& calibda)
	72	{
	73	// assignment operator
	74	SetName(calibda.GetName());
	75	SetTitle(calibda.GetName());
	76	if (this != &calibda) ((AliT0CalibSeasonTimeShift &) calibda).Copy(*this);
	77
	78	return *this;
	79	}
	80
	81	//________________________________________________________________
	82	AliT0CalibSeasonTimeShift::~AliT0CalibSeasonTimeShift()
	83	{
	84	//
	85	// destrictor
	86	}
	87
	88
	89	//________________________________________________________________
	90	void AliT0CalibSeasonTimeShift::Print(Option_t*) const
	91	{
	92	// print time values
	93
	94	printf("\n ---- T0 results ----\n\n");
	95	printf(" (T0A+T0C)/2 = %f; T0A = %f; T0C = %f; resolution = %f \n", fMeanPar[0], fMeanPar[1],fMeanPar[2],fMeanPar[3]);
	96	printf(" sigma(T0A+T0C)/2 = %f; sigma(T0 = %f; sigma(T0C) = %f; sigma(resolution) = %f \n" , fSigmaPar[0], fSigmaPar[1], fSigmaPar[2],fSigmaPar[3]);
	97
	98	}
	99
	100	//________________________________________________________________
	101	Bool_t AliT0CalibSeasonTimeShift::SetT0Par(Float_t par[4],Float_t spar[4])
	102	{
	103	Bool_t ok=false;
	104	for (Int_t i=0; i<4; i++)
	105	{
	106	fMeanPar[i] = par[i];
	107	fSigmaPar[i] = spar[i];
	108	if ( fSigmaPar[i] == 0 \|\| fSigmaPar[i] > 500) ok = false;
	109	}
	110	return ok;
	111	}
	112
	113	//________________________________________________________________
	114	Int_t AliT0CalibSeasonTimeShift::SetT0Par(const char* filePhys, Float_t *cdbtime)
	115	{
	116	// compute online equalized time
	117	Float_t mean, sigma;
	118	Int_t ok = 0;
	119	TH1F *cfd = NULL;
	120	TObjArray * tzeroObj = NULL;
	121
	122	gFile = TFile::Open(filePhys);
	123	if(!gFile) {
	124	AliError("No input PHYS data found ");
	125	ok = 2000;
	126	}
	127	else {
	128	// gFile->ls();
	129	// TDirectory dr = (TDirectory) gFile->Get("T0Calib");
	130	tzeroObj = dynamic_cast<TObjArray*>(gFile->Get("T0Calib"));
	131	TString histname[4]={"fTzeroORAplusORC", "fTzeroORA", "fTzeroORC", "fResolution"};
	132	for (Int_t i=0; i<4; i++)
	133	{
	134	if(cfd) cfd->Reset();
	135	if(tzeroObj)
	136	cfd = (TH1F*)tzeroObj->FindObject( histname[i].Data());
	137	else
	138	cfd = (TH1F*)gFile ->Get(histname[i].Data());
	139
	140	if(!cfd) {
	141	ok=300;
	142	AliError(Form("no histograms collected for %s", histname[i].Data()));
	143	return ok;
	144	}
	145	if(cfd) {
	146	if( cfd->GetEntries() == 0) {
	147	ok=300;
	148	AliError(Form("%s histogram is empty", histname[i].Data()));
	149	return ok;
	150	}
	151	GetMeanAndSigma(cfd, mean, sigma);
	152	if (sigma == 0 \|\| sigma > 500 \|\| cfd->GetEntries()<200 ){
	153	ok = -100;
	154	fMeanPar[i] = cdbtime[i];
	155	fSigmaPar[i] = -1;
	156	}
	157	if ( sigma > 0 && sigma < 500 && cfd->GetEntries()>200)
	158	{
	159	fMeanPar[i] = mean;
	160	fSigmaPar[i] = sigma;
	161	}
	162	}
	163	}
	164	}
	165	gFile->Close();
	166	delete gFile;
	167	return ok;
	168	}
	169	//________________________________________________________________________
	170	void AliT0CalibSeasonTimeShift::GetMeanAndSigma(TH1F* hist, Float_t &mean, Float_t &sigma) {
	171
	172	const double window =2.; //fit window
	173
	174	double meanEstimate, sigmaEstimate;
	175	int maxBin;
	176	maxBin = hist->GetMaximumBin(); //position of maximum
	177	meanEstimate = hist->GetBinCenter( maxBin); // mean of gaussian sitting in maximum
	178	sigmaEstimate = hist->GetRMS();
	179	TF1* fit= new TF1("fit","gaus", meanEstimate - windowsigmaEstimate, meanEstimate + windowsigmaEstimate);
	180	fit->SetParameters(hist->GetBinContent(maxBin), meanEstimate, sigmaEstimate);
	181	hist->Fit("fit","RQ","Q");
	182
	183	mean = (Float_t) fit->GetParameter(1);
	184	sigma = (Float_t) fit->GetParameter(2);
	185
	186	delete fit;
	187	}