MONITOR/AliMonitorTPC.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 /* $Id$ */
  17
  18 ///////////////////////////////////////////////////////////////////////////////
  19 //                                                                           //
  20 //  This class creates and fills the monitor histograms for the TPC          //
  21 //                                                                           //
  22 ///////////////////////////////////////////////////////////////////////////////
  23
  24
  25 #include "AliMonitorTPC.h"
  26 #include "AliMonitorDataTPC.h"
  27 #include "AliMonitorHisto.h"
  28 #include "AliMonitorTrend.h"
  29 #include "AliTPCParam.h"
  30 #include "AliTPCRawStream.h"
  31 #include "AliTPCClustersRow.h"
  32 #include "AliTPCclusterMI.h"
  33 #include "AliTPCtrack.h"
  34 #include "AliRunLoader.h"
  35 #include <TFolder.h>
  36 #include <TTree.h>
  37
  38
  39 ClassImp(AliMonitorTPC)
  40
  41
  42 //_____________________________________________________________________________
  43 AliMonitorTPC::AliMonitorTPC(AliTPCParam* param)
  44 {
  45 // create a TPC monitor object with the given parameters
  46
  47   fParam = param;
  48   fData = new AliMonitorDataTPC(10000);
  49 }
  50
  51 //_____________________________________________________________________________
  52 AliMonitorTPC::AliMonitorTPC(const AliMonitorTPC& monitor) :
  53   AliMonitor(monitor)
  54 {
  55   Fatal("AliMonitorTPC", "copy constructor not implemented");
  56 }
  57
  58 //_____________________________________________________________________________
  59 AliMonitorTPC& AliMonitorTPC::operator = (const AliMonitorTPC& /*monitor*/)
  60 {
  61   Fatal("operator =", "assignment operator not implemented");
  62   return *this;
  63 }
  64
  65 //_____________________________________________________________________________
  66 AliMonitorTPC::~AliMonitorTPC()
  67 {
  68   delete fData;
  69 }
  70
  71
  72 //_____________________________________________________________________________
  73 void AliMonitorTPC::CreateHistos(TFolder* folder)
  74 {
  75 // create the TPC monitor histograms
  76
  77   fFolder = folder->AddFolder("TPC", "TPC");
  78
  79   fPadsCharge = CreateHisto1("PadsCharge", "charge distribution of pads",
  80                              100, 0, 200, "charge", "#Delta N/N",
  81                              AliMonitorHisto::kNormEvents);
  82
  83   fClustersCharge = CreateHisto1("ClustersCharge",
  84                                  "charge distribution of clusters",
  85                                  100, 0, 1000, "charge", "#Delta N/N",
  86                                  AliMonitorHisto::kNormEvents);
  87
  88   Int_t nRows = fParam->GetNRowLow() + fParam->GetNRowUp();
  89   fNClustersVsRow = CreateHisto1("NClustersVsRow",
  90                                  "mean number of clusters per pad row",
  91                                  nRows, -0.5, nRows-0.5,
  92                                  "pad row", "<N_{clusters}>",
  93                                  AliMonitorHisto::kNormEvents);
  94
  95   Int_t nSector = fParam->GetNInnerSector();
  96   fNClustersVsSector = CreateHisto1("NClustersVsSector",
  97                                     "mean number of clusters per sector",
  98                                     nSector, -0.5, nSector-0.5,
  99                                     "sector", "<N_{clusters}>",
 100                                     AliMonitorHisto::kNormEvents);
 101
 102   fNTracks = CreateTrend("NTracks", "number of tracks per event",
 103                          "N_{tracks}");
 104
 105   fTrackPt = CreateHisto1("TrackPt", "pt distribution of tracks",
 106                           90, 0, 3, "p_{t} [GeV/c]", "#Delta N/N",
 107                           AliMonitorHisto::kNormEntries);
 108
 109   fTrackEta = CreateHisto1("TrackEta", "eta distribution of tracks",
 110                            100, -2, 2, "#eta", "#Delta N/N",
 111                            AliMonitorHisto::kNormEntries);
 112
 113   fTrackPhi = CreateHisto1("TrackPhi", "phi distribution of tracks",
 114                            120, 0, 360, "#phi [#circ]", "#Delta N/N",
 115                            AliMonitorHisto::kNormEntries);
 116   fTrackPhi->SetDescription("The phi distribution should be flat on average.\nIf it is not flat check for dead TPC sectors.");
 117
 118   fTrackNCl = CreateHisto1("TrackNCl", "Number of clusters per track",
 119                            200, 0, 200, "N_{clusters}", "#Delta N/N",
 120                            AliMonitorHisto::kNormEntries);
 121
 122   fTrackDEdxVsP = CreateHisto2("TrackDEdxVsP", "dE/dx of tracks",
 123                                100, 0, 3, 100, 0, 200,
 124                                "p [GeV/c]", "dE/dx", "#Delta N/N",
 125                                AliMonitorHisto::kNormEntries);
 126 }
 127
 128
 129 //_____________________________________________________________________________
 130 void AliMonitorTPC::CreateBranches(TTree* tree)
 131 {
 132 // create a branch with TPC variables
 133
 134   tree->Branch("TPC", "AliMonitorDataTPC", &fData);
 135 }
 136
 137
 138 //_____________________________________________________________________________
 139 void AliMonitorTPC::FillHistos(AliRunLoader* runLoader,
 140                                AliRawReader* rawReader)
 141 {
 142 // fill the TPC monitor histogrms
 143
 144   rawReader->Reset();
 145   AliTPCRawStream input(rawReader);
 146   while (input.Next()) {
 147     fPadsCharge->Fill(input.GetSignal());
 148   }
 149
 150   AliLoader* tpcLoader = runLoader->GetLoader("TPCLoader");
 151   if (!tpcLoader) return;
 152
 153
 154   tpcLoader->LoadRecPoints();
 155   TTree* clusters = tpcLoader->TreeR();
 156   if (!clusters) return;
 157   AliTPCClustersRow* clustersRow = new AliTPCClustersRow;
 158   clustersRow->SetClass("AliTPCclusterMI");
 159   clusters->SetBranchAddress("Segment", &clustersRow);
 160
 161   for (Int_t i = 0; i < clusters->GetEntries(); i++) {
 162     clusters->GetEntry(i);
 163     Int_t iSector, iRow;
 164     fParam->AdjustSectorRow(clustersRow->GetID(), iSector, iRow);
 165     if (iSector >= fParam->GetNInnerSector()) {
 166       iRow += fParam->GetNRowLow();
 167       iSector -= fParam->GetNInnerSector();
 168     }
 169
 170     TObjArray* array = clustersRow->GetArray();
 171     for (Int_t j = 0; j < array->GetEntriesFast(); j++) {
 172       AliTPCclusterMI* cluster = (AliTPCclusterMI*) array->At(j);
 173       fClustersCharge->Fill(cluster->GetQ());
 174       fNClustersVsRow->Fill(iRow);
 175       fNClustersVsSector->Fill(iSector);
 176     }
 177   }
 178   fNClustersVsSector->ScaleErrorBy(10.);
 179
 180   delete clustersRow;
 181   tpcLoader->UnloadRecPoints();
 182
 183
 184   tpcLoader->LoadTracks();
 185   TTree* tracks = tpcLoader->TreeT();
 186   if (!tracks) return;
 187   AliTPCtrack* track = new AliTPCtrack;
 188   tracks->SetBranchAddress("tracks", &track);
 189
 190   Int_t nTracks = (Int_t) tracks->GetEntries();
 191   fNTracks->Fill(nTracks);
 192   fData->SetNTracks(nTracks);
 193   for (Int_t i = 0; i < nTracks; i++) {
 194     tracks->GetEntry(i);
 195     fTrackPt->Fill(track->Pt());
 196     fTrackEta->Fill(track->Eta());
 197     fTrackPhi->Fill(track->Phi() * TMath::RadToDeg());
 198     fTrackNCl->Fill(track->GetNumberOfClusters());
 199     fTrackDEdxVsP->Fill(track->P(), track->GetdEdx());
 200
 201     fData->SetData(i, track->Pt(), track->Eta(),
 202                    track->Phi() * TMath::RadToDeg());
 203   }
 204
 205   delete track;
 206   tpcLoader->UnloadTracks();
 207 }