T0/AliT0CalibSeasonTimeShift.cxx

   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
  40 }
  41
  42 //________________________________________________________________
  43 AliT0CalibSeasonTimeShift::AliT0CalibSeasonTimeShift(const char* name):TNamed()
  44 {
  45     //constructor
  46
  47   TString namst = "Calib_";
  48   namst += name;
  49   SetName(namst.Data());
  50   SetTitle(namst.Data());
  51 }
  52
  53 //________________________________________________________________
  54 AliT0CalibSeasonTimeShift::AliT0CalibSeasonTimeShift(const AliT0CalibSeasonTimeShift& calibda):TNamed(calibda)
  55
  56 {
  57 // copy constructor
  58   SetName(calibda.GetName());
  59   SetTitle(calibda.GetName());
  60
  61
  62 }
  63
  64 //________________________________________________________________
  65 AliT0CalibSeasonTimeShift &AliT0CalibSeasonTimeShift::operator =(const AliT0CalibSeasonTimeShift& calibda)
  66 {
  67 // assignment operator
  68   SetName(calibda.GetName());
  69   SetTitle(calibda.GetName());
  70
  71   return *this;
  72 }
  73
  74 //________________________________________________________________
  75 AliT0CalibSeasonTimeShift::~AliT0CalibSeasonTimeShift()
  76 {
  77   //
  78   // destrictor
  79 }
  80
  81
  82 //________________________________________________________________
  83 void  AliT0CalibSeasonTimeShift::Print(Option_t*) const
  84 {
  85   // print time values
  86
  87   printf("\n    ----    T0 results      ----\n\n");
  88   printf(" (T0A+T0C)/2 = %f; T0A = %f; T0C = %f; resolution = %f  \n", fMeanPar[0], fMeanPar[1],fMeanPar[2],fMeanPar[3]);
  89   printf(" sigma(T0A+T0C)/2 = %f; sigma(T0 = %f; sigma(T0C) = %f; sigma(resolution) = %f  \n" , fSigmaPar[0], fSigmaPar[1], fSigmaPar[2],fSigmaPar[3]);
  90
  91 }
  92
  93 //________________________________________________________________
  94 void  AliT0CalibSeasonTimeShift::SetT0Par(Float_t par[4],Float_t spar[4])
  95 {
  96   for (Int_t i=0; i<4; i++)
  97     {
  98       fMeanPar[i] = par[i];
  99       fSigmaPar[i] = spar[i];
 100     }
 101
 102 }
 103
 104 //________________________________________________________________
 105 void AliT0CalibSeasonTimeShift::SetT0Par(const char* filePhys)
 106 {
 107
 108   gFile = TFile::Open(filePhys);
 109   if(!gFile) {
 110     AliError("No input PHYS data found ");
 111   }
 112   else
 113     {
 114       gFile->ls();
 115
 116       TString histname[4]={"meanAC", "meanA", "meanC", "resolution"};
 117        for (Int_t i=0; i<4; i++)
 118         {
 119           TH1F *cfd = (TH1F*) gFile->Get(histname[i].Data());
 120           if(!cfd) AliWarning(Form("no histograms collected for %s", histname[i].Data()));
 121           if(cfd) {
 122             TF1 *g = new TF1("g", "gaus",-2,2);
 123             cfd->Fit("g"," ","Q",-2,2);
 124             Double_t par[3];
 125             g->GetParameters(&par[0]);
 126             fMeanPar[i] = par[1];
 127             fSigmaPar[i]=par[2];
 128
 129           }
 130         }
 131
 132           gFile->Close();
 133           delete gFile;
 134
 135     }
 136
 137 }