MONITOR/AliMonitorHLT.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 HLT          //
  21 //                                                                           //
  22 ///////////////////////////////////////////////////////////////////////////////
  23
  24
  25 #include "AliMonitorHLT.h"
  26 #include "AliMonitorTrend.h"
  27 #include "AliTPCParam.h"
  28 #include <TFolder.h>
  29 #ifdef ALI_HLT
  30 #include <stdlib.h>
  31 #include "AliL3MemHandler.h"
  32 #include "AliL3SpacePointData.h"
  33 #include "AliL3TrackArray.h"
  34 #include "AliL3Track.h"
  35 #include "AliL3Transform.h"
  36 #endif
  37
  38 //_____________________________________________________________________________
  39 AliMonitorHLT::AliMonitorHLT(AliTPCParam* param)
  40 {
  41 // create a HLT monitor object with the given parameters
  42
  43   fParam = param;
  44 }
  45
  46 //_____________________________________________________________________________
  47 AliMonitorHLT::AliMonitorHLT(const AliMonitorHLT& monitor) :
  48   AliMonitor(monitor)
  49 {
  50   Fatal("AliMonitorHLT", "copy constructor not implemented");
  51 }
  52
  53 //_____________________________________________________________________________
  54 AliMonitorHLT& AliMonitorHLT::operator = (const AliMonitorHLT& /*monitor*/)
  55 {
  56   Fatal("operator =", "assignment operator not implemented");
  57   return *this;
  58 }
  59
  60
  61 //_____________________________________________________________________________
  62 void AliMonitorHLT::CreateHistos(TFolder* folder)
  63 {
  64 // create the HLT monitor histograms
  65
  66   fFolder = folder->AddFolder("HLT", "HLT");
  67
  68   fClustersCharge = CreateHisto1("ClustersCharge",
  69                                  "charge distribution of clusters",
  70                                  100, 0, 1000, "charge", "#Delta N/N",
  71                                  AliMonitorHisto::kNormEvents);
  72
  73   Int_t nRows = fParam->GetNRowLow() + fParam->GetNRowUp();
  74   fNClustersVsRow = CreateHisto1("NClustersVsRow",
  75                                  "mean number of clusters per pad row",
  76                                  nRows, -0.5, nRows-0.5,
  77                                  "pad row", "<N_{clusters}>",
  78                                  AliMonitorHisto::kNormEvents);
  79
  80   Int_t nSector = fParam->GetNInnerSector();
  81   fNClustersVsSector = CreateHisto1("NClustersVsSector",
  82                                     "mean number of clusters per sector",
  83                                     nSector, -0.5, nSector-0.5,
  84                                     "sector", "<N_{clusters}>",
  85                                     AliMonitorHisto::kNormEvents);
  86
  87   fNTracks = CreateTrend("NTracks", "number of tracks per event",
  88                          "N_{tracks}");
  89
  90   fTrackPt = CreateHisto1("TrackPt", "pt distribution of tracks",
  91                           90, 0, 3, "p_{t} [GeV/c]", "#Delta N/N",
  92                           AliMonitorHisto::kNormEntries);
  93
  94   fTrackEta = CreateHisto1("TrackEta", "eta distribution of tracks",
  95                            100, -2, 2, "#eta", "#Delta N/N",
  96                            AliMonitorHisto::kNormEntries);
  97
  98   fTrackPhi = CreateHisto1("TrackPhi", "phi distribution of tracks",
  99                            120, 0, 360, "#phi [#circ]", "#Delta N/N",
 100                            AliMonitorHisto::kNormEntries);
 101
 102   fTrackNHits = CreateHisto1("TrackNHits", "Number of hits per track",
 103                            200, 0, 200, "N_{hits}", "#Delta N/N",
 104                            AliMonitorHisto::kNormEntries);
 105
 106   fTrackDEdxVsP = CreateHisto2("TrackDEdxVsP", "dE/dx of tracks",
 107                                100, 0, 3, 100, 0, 1000,
 108                                "p [GeV/c]", "dE/dx", "#Delta N/N",
 109                                AliMonitorHisto::kNormEntries);
 110
 111   fTrackDz0 = CreateHisto1("TrackDz0", "Dz0 of tracks",
 112                            100, -100, 100, "#Delta z0 [cm]", "#Delta N/N",
 113                            AliMonitorHisto::kNormEntries);
 114
 115   fTrackDr0 = CreateHisto1("TrackDr0", "Dr0 of tracks",
 116                            130, 80, 250, "#Delta r0 [cm]", "#Delta N/N",
 117                            AliMonitorHisto::kNormEntries);
 118
 119   fTrackAngle = CreateHisto1("TrackAngle", "azimutal distribution of tracks",
 120                            100, -4, 4, " ", "#Delta N/N",
 121                            AliMonitorHisto::kNormEntries);
 122
 123 }
 124
 125
 126 //_____________________________________________________________________________
 127 void AliMonitorHLT::FillHistos(AliRunLoader* /*runLoader*/,
 128                                AliRawReader* /*rawReader*/)
 129 {
 130 // fill the HLT monitor histogrms
 131
 132 #ifndef ALI_HLT
 133   Warning("FillHistos", "the code was compiled without HLT support");
 134
 135 #else
 136   AliL3MemHandler clusterHandler[36];
 137   AliL3SpacePointData *clusters[36];
 138   for (Int_t iSector = 0; iSector < fParam->GetNInnerSector(); iSector++) {
 139     char fileName[256];
 140     sprintf(fileName, "hlt/points_%d_-1.raw", iSector);
 141     if (!clusterHandler[iSector].SetBinaryInput(fileName)) {
 142       Warning("FillHistos", "could not open file %s", fileName);
 143       continue;
 144     }
 145     clusters[iSector] = (AliL3SpacePointData*) clusterHandler[iSector].Allocate();
 146     UInt_t nClusters = 0;
 147     clusterHandler[iSector].Binary2Memory(nClusters, clusters[iSector]);
 148
 149     for (UInt_t iCluster = 0; iCluster < nClusters; iCluster++) {
 150       AliL3SpacePointData& cluster = clusters[iSector][iCluster];
 151       fClustersCharge->Fill(cluster.fCharge);
 152       fNClustersVsRow->Fill(cluster.fPadRow);
 153       fNClustersVsSector->Fill(iSector);
 154     }
 155
 156     clusterHandler[iSector].CloseBinaryInput();
 157   }
 158
 159   fNClustersVsSector->ScaleErrorBy(10.);
 160
 161   AliL3MemHandler memHandler;
 162   if (!memHandler.SetBinaryInput("hlt/tracks.raw")) {
 163     Warning("FillHistos", "could not open file hlt/tracks.raw");
 164     return;
 165   }
 166   AliL3TrackArray* tracks = new AliL3TrackArray;
 167   memHandler.Binary2TrackArray(tracks);
 168
 169   fNTracks->Fill(tracks->GetNTracks());
 170   for (Int_t iTrack = 0; iTrack < tracks->GetNTracks(); iTrack++) {
 171     AliL3Track* track = tracks->GetCheckedTrack(iTrack);
 172     if(!track) continue;
 173     track->CalculateHelix();
 174     fTrackPt->Fill(track->GetPt());
 175     fTrackEta->Fill(track->GetPseudoRapidity());
 176     fTrackPhi->Fill(track->GetPsi() * TMath::RadToDeg());
 177     fTrackDz0->Fill(track->GetZ0());
 178     fTrackDr0->Fill(track->GetR0());
 179     fTrackNHits->Fill(track->GetNHits());
 180
 181     // Track dEdx
 182     Int_t nc=track->GetNHits();
 183     UInt_t *hits = track->GetHitNumbers();
 184     Float_t sampleDEdx[159];
 185     for (Int_t iHit = 0; iHit < nc; iHit++) {
 186       UInt_t hitID = hits[iHit];
 187       Int_t iSector = (hitID>>25) & 0x7f;
 188       UInt_t position = hitID&0x3fffff;
 189       UChar_t padrow = clusters[iSector][position].fPadRow;
 190       Float_t pWidth = AliL3Transform::GetPadPitchWidthLow();
 191       if (padrow>63)
 192         pWidth = AliL3Transform::GetPadPitchWidthUp();
 193       Float_t corr=1.; if (padrow>63) corr=0.67;
 194       sampleDEdx[iHit] = clusters[iSector][position].fCharge/pWidth*corr;
 195       Double_t crossingangle = track->GetCrossingAngle(padrow,iSector);
 196       fTrackAngle->Fill(crossingangle);
 197       Double_t s = sin(crossingangle);
 198       Double_t t = track->GetTgl();
 199       sampleDEdx[iHit] *= TMath::Sqrt((1-s*s)/(1+t*t));
 200     }
 201
 202     /* Cook dEdx */
 203     Int_t i;
 204     Int_t swap;//stupid sorting
 205     do {
 206       swap=0;
 207       for (i=0; i<nc-1; i++) {
 208         if (sampleDEdx[i]<=sampleDEdx[i+1]) continue;
 209         Float_t tmp=sampleDEdx[i];
 210         sampleDEdx[i]=sampleDEdx[i+1]; sampleDEdx[i+1]=tmp;
 211         swap++;
 212       }
 213     } while (swap);
 214
 215     Double_t low=0.05; Double_t up=0.7;
 216     Int_t nl=Int_t(low*nc), nu=Int_t(up*nc);
 217     Float_t trackDEdx=0;
 218     for (i=nl; i<=nu; i++) trackDEdx += sampleDEdx[i];
 219     trackDEdx /= (nu-nl+1);
 220
 221     fTrackDEdxVsP->Fill(track->GetP(),trackDEdx);
 222   }
 223
 224   delete tracks;
 225   memHandler.CloseBinaryInput();
 226 #endif
 227 }