FMD/AliFMDPedestalDA.cxx

   1 /**************************************************************************
   2  * Copyright(c) 2004, ALICE Experiment at CERN, All rights reserved. *
   3  *                                                                        *
   4  * Author: The ALICE Off-line Project.                                    *
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  13  * provided "as is" without express or implied warranty.                  *
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  15
  16 /** @file    AliFMDPedestalDA.cxx
  17     @author  Hans Hjersing Dalsgaard <canute@nbi.dk>
  18     @date    Mon Mar 10 09:46:05 2008
  19     @brief   Derived class for the pedestal detector algorithm.
  20 */
  21 //
  22 // This class implements the virtual functions of the AliFMDBaseDA class.
  23 // The most important of these functions, FillChannels(..) and Analyse(...) collect
  24 // and analyse the data of each channel. The resulting pedestal and noise values are
  25 // written to a comma separated values (csv) file on the go. The csv files produced
  26 // in this way are the basic input to the AliFMDPreprocessor.
  27 //
  28
  29 #include "AliFMDPedestalDA.h"
  30 #include "iostream"
  31 #include "fstream"
  32 #include "AliLog.h"
  33 #include "TF1.h"
  34
  35 //_____________________________________________________________________
  36 ClassImp(AliFMDPedestalDA)
  37
  38 //_____________________________________________________________________
  39 AliFMDPedestalDA::AliFMDPedestalDA() : AliFMDBaseDA()
  40 {
  41   fOutputFile.open("peds.csv");
  42
  43 }
  44
  45 //_____________________________________________________________________
  46 AliFMDPedestalDA::AliFMDPedestalDA(const AliFMDPedestalDA & pedDA) :
  47   AliFMDBaseDA(pedDA)
  48 {
  49
  50 }
  51
  52 //_____________________________________________________________________
  53 AliFMDPedestalDA::~AliFMDPedestalDA() {
  54
  55 }
  56
  57 //_____________________________________________________________________
  58 void AliFMDPedestalDA::Init() {
  59
  60   SetRequiredEvents(1000);
  61 }
  62
  63 //_____________________________________________________________________
  64 void AliFMDPedestalDA::AddChannelContainer(TObjArray* sectorArray,
  65                                            UShort_t det,
  66                                            Char_t ring,
  67                                            UShort_t sec,
  68                                            UShort_t strip) {
  69
  70   TH1S* hChannel = new TH1S(Form("hFMD%d%c_%d_%d",det,ring,sec,strip),
  71                             Form("hFMD%d%c_%d_%d",det,ring,sec,strip),
  72                             1024,0,1023);
  73
  74   hChannel->SetDirectory(0);
  75   sectorArray->AddAtAndExpand(hChannel,strip);
  76 }
  77
  78 //_____________________________________________________________________
  79 void AliFMDPedestalDA::FillChannels(AliFMDDigit* digit) {
  80   UShort_t det   = digit->Detector();
  81   Char_t   ring  = digit->Ring();
  82   UShort_t sec   = digit->Sector();
  83   UShort_t strip = digit->Strip();
  84
  85   TH1S* hChannel       = GetChannel(det, ring, sec, strip);
  86   hChannel->Fill(digit->Counts());
  87
  88 }
  89
  90 //_____________________________________________________________________
  91 void AliFMDPedestalDA::Analyse(UShort_t det,
  92                                Char_t ring,
  93                                UShort_t sec,
  94                                UShort_t strip) {
  95
  96   TH1S* hChannel       = GetChannel(det, ring, sec, strip);
  97   if(hChannel->GetEntries()==0) {
  98     AliWarning(Form("No entries for FMD%d%c, sector %d, strip %d",det,ring,sec,strip));
  99     return;
 100   }
 101   //std::cout<<"Fitting Channel #"<<Form("FMD%d%c_%d_%d",det,ring,sec,strip)<<"   \r"<<std::flush;
 102
 103   Float_t mean = hChannel->GetMean();
 104   Float_t rms  = hChannel->GetRMS();
 105
 106   for(Int_t i=1;i<hChannel->GetNbinsX();i++)
 107     if(hChannel->GetBinCenter(i)>mean+5*rms || hChannel->GetBinCenter(i)<mean-5*rms)
 108       hChannel->SetBinContent(i,0);
 109
 110   mean = hChannel->GetMean();
 111   rms  = hChannel->GetRMS();
 112
 113   hChannel->Fit("gaus","QO","QO",mean-5*rms,mean+5*rms);
 114   TF1* fitFunc = hChannel->GetFunction("gaus");
 115
 116   UInt_t ddl, board, chip, channel;
 117
 118   UShort_t relStrip = strip%128;
 119   AliFMDParameters* pars = AliFMDParameters::Instance();
 120   pars->Detector2Hardware(det,ring,sec,strip,ddl,board,chip,channel);
 121   Float_t chi2ndf = 0;
 122   if(fitFunc->GetNDF())
 123     chi2ndf = fitFunc->GetChisquare() / fitFunc->GetNDF();
 124   ddl = ddl + kBaseDDL;
 125
 126   fOutputFile << ddl                         << ','
 127               << board                       << ','
 128               << chip                        << ','
 129               << channel                     << ','
 130               << relStrip                    << ','
 131               << 0                           << ','
 132               << 0                           << ','
 133               << mean                        << ','
 134               << rms                         << ','
 135               << fitFunc->GetParameter(1)    << ','
 136               << fitFunc->GetParameter(2)    << ','
 137               << chi2ndf                     <<"\n";
 138
 139   if(fSaveHistograms) {
 140     gDirectory->cd(Form("%s:FMD%d%c/sector_%d/strip_%d",fDiagnosticsFilename,det,ring,sec,strip));
 141     hChannel->Write();
 142
 143   }
 144
 145 }
 146
 147 //_____________________________________________________________________
 148 void AliFMDPedestalDA::WriteHeaderToFile() {
 149   fOutputFile.write("# Pedestals \n",13);
 150   fOutputFile.write("# Rcu, Board, Chip, Channel, Strip, Sample, TimeBin, Pedestal, Noise, Mu, Sigma, Chi2/NDF \n",91);
 151
 152 }
 153
 154 //_____________________________________________________________________
 155 TH1S* AliFMDPedestalDA::GetChannel(UShort_t det, Char_t ring, UShort_t sec, UShort_t strip) {
 156
 157   UShort_t  Ring = 1;
 158   if(ring == 'O')
 159     Ring = 0;
 160
 161
 162   TObjArray* detArray  = static_cast<TObjArray*>(fDetectorArray.At(det));
 163   TObjArray* ringArray = static_cast<TObjArray*>(detArray->At(Ring));
 164   TObjArray* secArray  = static_cast<TObjArray*>(ringArray->At(sec));
 165   TH1S* hChannel       = static_cast<TH1S*>(secArray->At(strip));
 166
 167   return hChannel;
 168 }
 169 //_____________________________________________________________________
 170 //
 171 //EOF
 172 //