ITS/AliITSOnlineSDDInjectors.cxx

   1 /**************************************************************************
   2  * Copyright(c) 2007-2009, 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 #include "AliITSOnlineSDDInjectors.h"
  16 #include <TH2F.h>
  17 #include <TGraphErrors.h>
  18 #include <TMath.h>
  19
  20 /* $Id$ */
  21
  22 ///////////////////////////////////////////////////////////////////
  23 //                                                               //
  24 // Implementation of the class used for SDD injector analysis    //
  25 // Origin: F.Prino, Torino, prino@to.infn.it                     //
  26 //                                                               //
  27 ///////////////////////////////////////////////////////////////////
  28
  29 ClassImp(AliITSOnlineSDDInjectors)
  30
  31 const Float_t AliITSOnlineSDDInjectors::fgkSaturation = 1008.;
  32 const Float_t AliITSOnlineSDDInjectors::fgkDefaultLThreshold = 5.;
  33 const Float_t AliITSOnlineSDDInjectors::fgkDefaultHThreshold = 25.;
  34 const Float_t AliITSOnlineSDDInjectors::fgkDefaultMinSpeed = 5.5;
  35 const Float_t AliITSOnlineSDDInjectors::fgkDefaultMaxSpeed = 9.0;
  36 const Float_t AliITSOnlineSDDInjectors::fgkDefaultMaxErr = 1.5;
  37 const Int_t   AliITSOnlineSDDInjectors::fgkDefaultPolOrder = 3;
  38 const UShort_t AliITSOnlineSDDInjectors::fgkDefaultTbMin[kInjLines] = {20,90,170};
  39 const UShort_t AliITSOnlineSDDInjectors::fgkDefaultTbMax[kInjLines] = {50,160,240};
  40
  41 //______________________________________________________________________
  42 AliITSOnlineSDDInjectors::AliITSOnlineSDDInjectors():AliITSOnlineSDD(),fHisto(),fTbZero(0.),fParam(),fPolOrder(0),fMinDriftSpeed(0.),fMaxDriftSpeed(0.),fMaxDriftSpeedErr(0.),fLowThreshold(0.),fHighThreshold(0.),fFirstPadForFit(0),fLastPadForFit(0),fPadStatusCutForFit(0)
  43 {
  44   // default constructor
  45   SetPositions();
  46   SetDefaults();
  47 }
  48 //______________________________________________________________________
  49 AliITSOnlineSDDInjectors::AliITSOnlineSDDInjectors(Int_t nddl, Int_t ncarlos, Int_t sid):AliITSOnlineSDD(nddl,ncarlos,sid),fHisto(),fTbZero(0.),fParam(),fPolOrder(0),fMinDriftSpeed(0.),fMaxDriftSpeed(0.),fMaxDriftSpeedErr(0.),fLowThreshold(0.),fHighThreshold(0.),fFirstPadForFit(0),fLastPadForFit(0),fPadStatusCutForFit(0)
  50 {
  51 // standard constructor
  52   SetPositions();
  53   SetDefaults();
  54 }
  55 //______________________________________________________________________
  56 AliITSOnlineSDDInjectors::~AliITSOnlineSDDInjectors(){
  57   // Destructor
  58   // fHisto should not be deleted here because it points to an histo created
  59   // by the external code which calls the method AnalyzeEvent
  60   // if(fHisto) delete fHisto;
  61   if(fParam) delete [] fParam;
  62 }
  63 //______________________________________________________________________
  64 void AliITSOnlineSDDInjectors::SetDefaults(){
  65   for(Int_t i=0;i<kInjLines;i++)
  66     SetInjLineRange(i,fgkDefaultTbMin[i],fgkDefaultTbMax[i]);
  67   SetThresholds(fgkDefaultLThreshold,fgkDefaultHThreshold);
  68   SetPolOrder(fgkDefaultPolOrder);
  69   SetMinDriftSpeed(fgkDefaultMinSpeed);
  70   SetMaxDriftSpeed(fgkDefaultMaxSpeed);
  71   SetMaxDriftSpeedErr(fgkDefaultMaxErr);
  72   SetFitLimits(1,kInjPads-2); // exclude first and last pad
  73   SetPadStatusCutForFit();
  74 }
  75 //______________________________________________________________________
  76 void AliITSOnlineSDDInjectors::SetPositions(){
  77   //
  78   Float_t xLinFromCenterUm[kInjLines]={31860.,17460.,660.};
  79   Float_t xAnodeFromCenterUm=35085;
  80   for(Int_t i=0;i<kInjLines;i++){
  81     fPosition[i]=xAnodeFromCenterUm-xLinFromCenterUm[i];
  82     fPosition[i]/=10000.; // from microns to cm
  83   }
  84 }
  85 //______________________________________________________________________
  86 void AliITSOnlineSDDInjectors::Reset(){
  87   //
  88   for(Int_t i=0;i<kInjPads;i++){
  89     fDriftSpeed[i]=0.;
  90     fDriftSpeedErr[i]=0.;
  91   }
  92   for(Int_t i=0;i<kInjPads;i++){
  93     for(Int_t j=0;j<kInjLines;j++){
  94       fGoodInj[i][j]=0;
  95       fCentroid[i][j]=0.;
  96       fRMSCentroid[i][j]=0.;
  97     }
  98   }
  99 }
 100 //______________________________________________________________________
 101 void AliITSOnlineSDDInjectors::AnalyzeEvent(TH2F* his){
 102   //
 103   Reset();
 104   fHisto=his;
 105   FindGoodInjectors();
 106   FindCentroids();
 107   CalcTimeBinZero();
 108   for(Int_t j=0;j<kInjPads;j++) CalcDriftSpeed(j);
 109   FitDriftSpeedVsAnode();
 110 }
 111 //______________________________________________________________________
 112 TGraphErrors* AliITSOnlineSDDInjectors::GetTimeVsDistGraph(Int_t jpad) const{
 113   //
 114   const Int_t kPts=kInjLines+1;
 115   Float_t x[kPts],y[kPts],ex[kPts],ey[kPts];
 116   x[0]=0.;
 117   ex[0]=0.;
 118   y[0]=fTbZero;
 119   ey[0]=0.;
 120   for(Int_t i=0;i<kInjLines;i++){
 121     x[i+1]=fPosition[i];
 122     ex[i+1]=0.;
 123     y[i+1]=fCentroid[jpad][i];
 124     ey[i+1]=fRMSCentroid[jpad][i];
 125   }
 126   TGraphErrors *g=new TGraphErrors(4,x,y,ex,ey);
 127   return g;
 128 }
 129
 130 //______________________________________________________________________
 131 TGraphErrors* AliITSOnlineSDDInjectors::GetDriftSpeedGraph() const{
 132   //
 133   Int_t ipt=0;
 134   TGraphErrors *g=new TGraphErrors(0);
 135   for(Int_t i=0;i<kInjPads;i++){
 136     if(fDriftSpeed[i]>0){
 137       g->SetPoint(ipt,GetAnodeNumber(i),fDriftSpeed[i]);
 138       g->SetPointError(ipt,0,fDriftSpeedErr[i]);
 139       ipt++;
 140     }
 141   }
 142   return g;
 143 }
 144 //______________________________________________________________________
 145 TGraphErrors* AliITSOnlineSDDInjectors::GetSelectedDriftSpeedGraph(Int_t minAcceptStatus) const{
 146   // TGraphErrors with only pads with status of injector >= minAcceptStatus
 147   Int_t ipt=0;
 148   TGraphErrors *g=new TGraphErrors(0);
 149   for(Int_t i=0;i<kInjPads;i++){
 150     Int_t padStatus = GetInjPadStatus(i);
 151     if(fDriftSpeed[i]>0 && padStatus >= minAcceptStatus ){
 152       g->SetPoint(ipt,GetAnodeNumber(i),fDriftSpeed[i]);
 153       g->SetPointError(ipt,0,fDriftSpeedErr[i]);
 154       ipt++;
 155     }
 156   }
 157   return g;
 158 }
 159 //______________________________________________________________________
 160 void AliITSOnlineSDDInjectors::CalcTimeBinZero(){
 161   //
 162   Float_t tzero=0.,intCont=0.;
 163   for(Int_t ian=0;ian<fgkNAnodes;ian++){
 164     for(Int_t itb=1;itb<fTbMin[0];itb++){
 165       Float_t cont=fHisto->GetBinContent(itb,ian+1);
 166       if(cont>fLowThreshold){
 167         tzero+=cont*float(itb);
 168         intCont+=cont;
 169       }
 170     }
 171   }
 172   if(intCont>0) fTbZero=tzero/intCont;
 173 }
 174 //______________________________________________________________________
 175 void AliITSOnlineSDDInjectors::FitDriftSpeedVsAnode(){
 176   // fits the anode dependence of drift speed with a polynomial function
 177   const Int_t kNn=fPolOrder+1;
 178   Float_t **mat = new Float_t*[kNn];
 179   for(Int_t i=0; i < kNn; i++) mat[i] = new Float_t[kNn];
 180   Float_t *vect = new Float_t[kNn];
 181
 182   for(Int_t k1=0;k1<kNn;k1++){
 183     vect[k1]=0;
 184     for(Int_t k2=0;k2<kNn;k2++){
 185       mat[k1][k2]=0;
 186     }
 187   }
 188   Int_t npts = 0;
 189   for(Int_t k1=0;k1<kNn;k1++){
 190     for(Int_t jpad=fFirstPadForFit; jpad<=fLastPadForFit; jpad++){
 191       Float_t x=(Float_t)GetAnodeNumber(jpad);
 192       if(fDriftSpeed[jpad]>0 && GetInjPadStatus(jpad)>fPadStatusCutForFit){
 193           vect[k1]+=fDriftSpeed[jpad]*TMath::Power(x,k1)/TMath::Power(fDriftSpeedErr[jpad],2);
 194           if(k1==0) npts++;
 195           for(Int_t k2=0;k2<kNn;k2++){
 196             mat[k1][k2]+=TMath::Power(x,k1+k2)/TMath::Power(fDriftSpeedErr[jpad],2);
 197           }
 198       }
 199     }
 200   }
 201   if(npts<fPolOrder+1){
 202     if(fParam) delete [] fParam;
 203     fParam=new Float_t[kNn];
 204     for(Int_t i=0; i<kNn;i++)fParam[i]=0;
 205   }else{
 206     Int_t *iPivot = new Int_t[kNn];
 207     Int_t *indxR = new Int_t[kNn];
 208     Int_t *indxC = new Int_t[kNn];
 209     for(Int_t i=0;i<kNn;i++) iPivot[i]=0;
 210     Int_t iCol=-1,iRow=-1;
 211     for(Int_t i=0;i<kNn;i++){
 212       Float_t big=0.;
 213       for(Int_t j=0;j<kNn;j++){
 214         if(iPivot[j]!=1){
 215           for(Int_t k=0;k<kNn;k++){
 216             if(iPivot[k]==0){
 217               if(TMath::Abs(mat[j][k])>=big){
 218                 big=TMath::Abs(mat[j][k]);
 219                 iRow=j;
 220                 iCol=k;
 221               }
 222             }
 223           }
 224         }
 225       }
 226       iPivot[iCol]++;
 227       Float_t aux;
 228       if(iRow!=iCol){
 229         for(Int_t l=0;l<kNn;l++){
 230           aux=mat[iRow][l];
 231           mat[iRow][l]=mat[iCol][l];
 232           mat[iCol][l]=aux;
 233         }
 234         aux=vect[iRow];
 235         vect[iRow]=vect[iCol];
 236         vect[iCol]=aux;
 237       }
 238       indxR[i]=iRow;
 239       indxC[i]=iCol;
 240       if(mat[iCol][iCol]==0) break;
 241       Float_t pivinv=1./mat[iCol][iCol];
 242       mat[iCol][iCol]=1;
 243       for(Int_t l=0;l<kNn;l++) mat[iCol][l]*=pivinv;
 244       vect[iCol]*=pivinv;
 245       for(Int_t m=0;m<kNn;m++){
 246         if(m!=iCol){
 247           aux=mat[m][iCol];
 248           mat[m][iCol]=0;
 249           for(Int_t n=0;n<kNn;n++) mat[m][n]-=mat[iCol][n]*aux;
 250           vect[m]-=vect[iCol]*aux;
 251         }
 252       }
 253     }
 254     delete [] iPivot;
 255     delete [] indxR;
 256     delete [] indxC;
 257
 258
 259     if(fParam) delete [] fParam;
 260     fParam=new Float_t[kNn];
 261     for(Int_t i=0; i<kNn;i++)fParam[i]=vect[i];
 262   }
 263
 264   for(Int_t i=0; i < kNn; i++) delete [] mat[i];
 265   delete [] mat;
 266   delete [] vect;
 267 }
 268 //______________________________________________________________________
 269 void AliITSOnlineSDDInjectors::CalcDriftSpeed(Int_t jpad){
 270   //
 271   Float_t sumY=0,sumX=0,sumXX=0,sumYY=0.,sumXY=0,sumWEI=0.;
 272   Int_t npt=0;
 273   Float_t y[kInjLines],ey[kInjLines];
 274   Float_t tzero=0,erry=0;
 275   for(Int_t i=0;i<kInjLines;i++){
 276     y[i]=fCentroid[jpad][i];
 277     ey[i]=fRMSCentroid[jpad][i];
 278   }
 279   for(Int_t i=0;i<kInjLines;i++){
 280     if(fGoodInj[jpad][i] && ey[i]!=0){
 281       sumY+=y[i]/ey[i]/ey[i];
 282       sumX+=fPosition[i]/ey[i]/ey[i];
 283       sumXX+=fPosition[i]*fPosition[i]/ey[i]/ey[i];
 284       sumYY+=y[i]*y[i]/ey[i]/ey[i];
 285       sumXY+=fPosition[i]*y[i]/ey[i]/ey[i];
 286       sumWEI+=1./ey[i]/ey[i];
 287       tzero=fTbZero/ey[i]/ey[i];
 288       erry=ey[i];
 289       npt++;
 290     }
 291   }
 292   Float_t vel=0,evel=0;
 293   if(npt>1){
 294     Float_t slope=(sumWEI*sumXY-sumY*sumX)/(sumWEI*sumXX-sumX*sumX);
 295     Float_t eslope=TMath::Sqrt(sumWEI/(sumWEI*sumXX-sumX*sumX));
 296     if(slope!=0){
 297       vel=1./slope*10000./25.;// micron/ns
 298       evel=eslope/slope/slope*10000./25.;// micron/ns
 299     }
 300   }
 301   if(npt==1){
 302     Float_t slope=(sumY-tzero)/sumX;
 303     Float_t eslope=erry/sumX;
 304     if(slope!=0){
 305       vel=1./slope*10000./25.;// micron/ns
 306       evel=eslope/slope/slope*10000./25.;// micron/ns
 307     }
 308   }
 309   if(vel>fMaxDriftSpeed||vel<fMinDriftSpeed || evel>fMaxDriftSpeedErr){
 310     vel=0.;
 311     evel=0.;
 312   }
 313   fDriftSpeed[jpad]=vel;
 314   fDriftSpeedErr[jpad]=evel;
 315 }
 316 //______________________________________________________________________
 317 Int_t AliITSOnlineSDDInjectors::GetAnodeNumber(Int_t iInjPad) const{
 318   // Injectors location along anodes:
 319   // Side left  (UP)   - channel 0: injectors on anodes 0,7,15,...,247,255
 320   // Side right (DOWN) - channel 1: injectors on anodes 0,8,16,...,248,255
 321   Int_t ian=-1;
 322   if(iInjPad>=kInjPads) return ian;
 323   if(fSide==1){  // right side
 324     ian=iInjPad*8;
 325     if(iInjPad==32) ian--;
 326   }else{         // left side
 327     ian=iInjPad*8-1;
 328     if(iInjPad==0) ian=0;
 329   }
 330   return ian;
 331 }
 332 //______________________________________________________________________
 333 Int_t AliITSOnlineSDDInjectors::GetInjPadNumberFromAnode(Int_t nAnode) const{
 334   //
 335   Int_t iInjPad=-1;
 336   if(fSide==1){  // right side
 337     if(nAnode%8==0) iInjPad=nAnode/8;
 338     if(nAnode==255) iInjPad=32;
 339   }else{         // left side
 340     if(nAnode%8==7) iInjPad=1+nAnode/8;
 341     if(nAnode==0) iInjPad=0;
 342   }
 343   if(nAnode>=256) iInjPad=-1;
 344   return iInjPad;
 345 }
 346 //______________________________________________________________________
 347 Int_t AliITSOnlineSDDInjectors::GetInjPadStatus(Int_t jpad) const{
 348   // returns an integer value with status of injector lines for given pad/anode
 349   // status=7  -->  111  all injector are good
 350   // status=6  -->  110  1st line (close to anodes) is bad, other two are good
 351   // ....
 352   // status=1  -->  001  only 1st line (close to anodes) good
 353   // status=0  -->  000  all lines are bad
 354   Int_t istatus=0;
 355   if(jpad>=0 && jpad<kInjPads){
 356     for(Int_t jlin=0;jlin<kInjLines;jlin++) istatus+=fGoodInj[jpad][jlin]<<jlin;
 357   }
 358   return istatus;
 359 }
 360 //______________________________________________________________________
 361 void AliITSOnlineSDDInjectors::FindGoodInjectors(){
 362   //
 363   for(Int_t jpad=0;jpad<kInjPads;jpad++){
 364     Int_t ian=GetAnodeNumber(jpad);
 365     for(Int_t jlin=0;jlin<kInjLines;jlin++){
 366       for(Int_t jjj=fTbMin[jlin];jjj<fTbMax[jlin];jjj++){
 367         Float_t c1=fHisto->GetBinContent(jjj,ian+1);
 368         Float_t c2=fHisto->GetBinContent(jjj+1,ian+1);
 369         Float_t c3=fHisto->GetBinContent(jjj+2,ian+1);
 370         if(c1>fLowThreshold && c2>fHighThreshold && c3>fLowThreshold){
 371           fGoodInj[jpad][jlin]=1;
 372           break;
 373         }
 374       }
 375     }
 376   }
 377 }
 378 //______________________________________________________________________
 379 void AliITSOnlineSDDInjectors::FindCentroids(){
 380   //
 381   for(Int_t jpad=0;jpad<kInjPads;jpad++){
 382     Int_t ian=GetAnodeNumber(jpad);
 383     for(Int_t jlin=0;jlin<kInjLines;jlin++){
 384       if(!fGoodInj[jpad][jlin]) continue;
 385       Float_t maxcont=0;
 386       Int_t ilmax=-1;
 387       for(Int_t jjj=fTbMin[jlin];jjj<fTbMax[jlin];jjj++){
 388         Float_t cont=fHisto->GetBinContent(jjj,ian+1);
 389         if(cont>maxcont){
 390           maxcont=cont;
 391           ilmax=jjj;
 392         }
 393       }
 394       Float_t intCont=0;
 395       Int_t jjj=ilmax;
 396       while(1){
 397         Float_t cont=fHisto->GetBinContent(jjj,ian+1);
 398         if(cont<fLowThreshold) break;
 399         if(cont<fgkSaturation){
 400           fCentroid[jpad][jlin]+=cont*(Float_t)jjj;
 401           fRMSCentroid[jpad][jlin]+=cont*TMath::Power((Float_t)jjj,2);
 402           intCont+=cont;
 403         }
 404         jjj--;
 405       }
 406       jjj=ilmax+1;
 407       while(1){
 408         Float_t cont=fHisto->GetBinContent(jjj,ian+1);
 409         if(cont<fLowThreshold) break;
 410         if(cont<fgkSaturation){
 411           fCentroid[jpad][jlin]+=cont*float(jjj);
 412           fRMSCentroid[jpad][jlin]+=cont*TMath::Power((Float_t)jjj,2);
 413           intCont+=cont;
 414         }
 415         jjj++;
 416       }
 417       if(intCont>0){
 418         fCentroid[jpad][jlin]/=intCont;
 419         fRMSCentroid[jpad][jlin]=TMath::Sqrt(fRMSCentroid[jpad][jlin]/intCont-fCentroid[jpad][jlin]*fCentroid[jpad][jlin]);
 420       }
 421       else{
 422         fCentroid[jpad][jlin]=0.;
 423         fRMSCentroid[jpad][jlin]=0.;
 424         fGoodInj[jpad][jlin]=0;
 425       }
 426       if(fRMSCentroid[jpad][jlin]==0) fGoodInj[jpad][jlin]=0;
 427     }
 428   }
 429 }
 430 //______________________________________________________________________
 431 void AliITSOnlineSDDInjectors::PrintInjectorStatus(){
 432   //
 433   for(Int_t jpad=0;jpad<kInjPads;jpad++){
 434     printf("Line%d-Anode%d: %d %d %d\n",jpad,GetAnodeNumber(jpad),fGoodInj[jpad][0],fGoodInj[jpad][1],fGoodInj[jpad][2]);
 435   }
 436 }
 437 //______________________________________________________________________
 438 void AliITSOnlineSDDInjectors::PrintCentroids(){
 439   //
 440   for(Int_t jpad=0;jpad<kInjPads;jpad++){
 441     printf("Line%d-Anode%d: %f+-%f %f+-%f %f+-%f\n",jpad,GetAnodeNumber(jpad),fCentroid[jpad][0],fRMSCentroid[jpad][0],fCentroid[jpad][1],fRMSCentroid[jpad][1],fCentroid[jpad][2],fRMSCentroid[jpad][2]);
 442   }
 443 }
 444 //______________________________________________________________________
 445 void AliITSOnlineSDDInjectors::WriteToASCII(Int_t evNumb, UInt_t timeStamp, Int_t optAppend){
 446   //
 447   Char_t outfilnam[100];
 448   sprintf(outfilnam,"SDDinj_ddl%02dc%02d_sid%d.data",fDDL,fCarlos,fSide);
 449   FILE* outf;
 450   if(optAppend==0){
 451     outf=fopen(outfilnam,"w");
 452     fprintf(outf,"%d\n",fPolOrder);
 453   }
 454   else outf=fopen(outfilnam,"a");
 455   fprintf(outf,"%d   %d   ",evNumb,timeStamp);
 456   for(Int_t ic=0;ic<fPolOrder+1;ic++){
 457     fprintf(outf,"%G ",fParam[ic]);
 458   }
 459   fprintf(outf,"\n");
 460   fclose(outf);
 461 }