2 /**************************************************************************
3 * This file is property of and copyright by *
4 * the Relativistic Heavy Ion Group (RHIG), Yale University, US, 2009 *
6 * Primary Author: Per Thomas Hille <perthomas.hille@yale.edu> *
8 * Contributors are mentioned in the code where appropriate. *
9 * Please report bugs to perthomas.hille@yale.edu *
11 * Permission to use, copy, modify and distribute this software and its *
12 * documentation strictly for non-commercial purposes is hereby granted *
13 * without fee, provided that the above copyright notice appears in all *
14 * copies and that both the copyright notice and this permission notice *
15 * appear in the supporting documentation. The authors make no claims *
16 * about the suitability of this software for any purpose. It is *
17 * provided "as is" without express or implied warranty. *
18 **************************************************************************/
20 // The Peak-Finder algorithm
21 // The amplitude is extracted as a
22 // weighted sum of the samples using the
23 // best possible weights.
24 // The wights is calculated only once and the
25 // Actual extraction of amplitude and peak position
26 // Is done with a simple vector multiplication, allowing for
27 // Extreemely fast computations.
29 #include "AliCaloRawAnalyzerPeakFinder.h"
30 #include "AliCaloBunchInfo.h"
31 #include "AliCaloFitResults.h"
34 #include "AliCDBEntry.h"
35 #include "AliCDBManager.h"
37 #include "AliCaloPeakFinderVectors.h"
44 ClassImp( AliCaloRawAnalyzerPeakFinder )
47 AliCaloRawAnalyzerPeakFinder::AliCaloRawAnalyzerPeakFinder() :AliCaloRawAnalyzer("Peak-Finder", "PF"),
48 fPeakFinderVectors(0),
53 fAlgo= Algo::kPeakFinder;
54 fPeakFinderVectors = new AliCaloPeakFinderVectors() ;
60 AliCaloRawAnalyzerPeakFinder::ResetVectors()
63 for(int i=0; i < PF::MAXSTART; i++)
65 for(int j=0; j < PF::SAMPLERANGE; j++ )
67 for(int k=0; k < 100; k++ )
69 fPFAmpVectors[i][j][k] = 0;
70 fPFTofVectors[i][j][k] = 0;
71 fPFAmpVectorsCoarse[i][j][k] = 0;
72 fPFTofVectorsCoarse[i][j][k] = 0;
79 AliCaloRawAnalyzerPeakFinder::~AliCaloRawAnalyzerPeakFinder()
86 AliCaloRawAnalyzerPeakFinder::ScanCoarse(const Double_t *const array, const int length ) const
88 // Fisrt (coarce) estimate of Amplitude using the Peak-Finder.
89 // The output of the first iteration is sued to select vectors
90 // for the second iteration.
95 for(int i=0; i < length; i++)
97 tmpTof += fPFTofVectorsCoarse[0][length][i]*array[i];
98 tmpAmp += fPFAmpVectorsCoarse[0][length][i]*array[i];
101 tmpTof = tmpTof / tmpAmp ;
107 AliCaloRawAnalyzerPeakFinder::Evaluate( const vector<AliCaloBunchInfo> &bunchvector, const UInt_t altrocfg1, const UInt_t altrocfg2 )
109 // Evaluation of amplitude and TOF
110 if( fIsInitialized == false )
112 cout << __FILE__ << ":" << __LINE__ << "ERROR, peakfinder vectors not loaded" << endl;
113 return AliCaloFitResults(kInvalid, kInvalid);
116 // Extracting the amplitude using the Peak-Finder algorithm
117 // The amplitude is a weighted sum of the samples using
120 short maxampindex; //index of maximum amplitude
121 short maxamp; //Maximum amplitude
123 int index = SelectBunch( bunchvector, &maxampindex, &maxamp );
127 Float_t ped = ReverseAndSubtractPed( &(bunchvector.at(index)) , altrocfg1, altrocfg2, fReversed );
128 Float_t maxf = TMath::MaxElement( bunchvector.at(index).GetLength(), fReversed );
129 short timebinOffset = maxampindex - (bunchvector.at( index ).GetLength()-1);
131 if( maxf < fAmpCut || ( maxamp - ped) > fOverflowCut ) // (maxamp - ped) > fOverflowCut = Close to saturation (use low gain then)
133 return AliCaloFitResults( maxamp, ped, Ret::kCrude, maxf, timebinOffset);
135 else if ( maxf >= fAmpCut )
139 short maxrev = maxampindex - bunchvector.at(index).GetStartBin();
140 SelectSubarray( fReversed, bunchvector.at(index).GetLength(), maxrev, &first, &last, fFitArrayCut);
141 int nsamples = last - first;
143 if( ( nsamples ) >= fNsampleCut ) // no if statement needed really; keep for readability
145 int startbin = bunchvector.at(index).GetStartBin();
146 int n = last - first;
147 int pfindex = n - fNsampleCut;
148 pfindex = pfindex > PF::SAMPLERANGE ? PF::SAMPLERANGE : pfindex;
149 int dt = maxampindex - startbin -2;
151 Float_t tmptof = ScanCoarse( &fReversed[dt] , n );
158 if( tmptof > -1 && tmptof < 100 )
168 for(int k=0; k < PF::SAMPLERANGE; k++ )
170 tof += fPFTofVectors[0][pfindex][k]*fReversed[ dt +k + tmpindex -1 ];
172 for( int i=0; i < PF::SAMPLERANGE; i++ )
176 fAmp += fPFAmpVectors[0][pfindex][i]*fReversed[ dt +i +tmpindex -1 ];
180 if( TMath::Abs( (maxf - fAmp )/maxf ) > 0.1 )
185 tof = timebinOffset - 0.01*tof/fAmp - fL1Phase/TIMEBINWITH; // clock
186 Float_t chi2 = CalculateChi2(fAmp, tof-timebinOffset+maxrev, first, last);
187 Int_t ndf = last - first - 1; // nsamples - 2
188 return AliCaloFitResults( maxamp, ped , Ret::kFitPar, fAmp, tof,
189 timebinOffset, chi2, ndf,
190 Ret::kDummy, AliCaloFitSubarray(index, maxrev, first, last) );
194 Float_t chi2 = CalculateChi2(maxf, maxrev, first, last);
195 Int_t ndf = last - first - 1; // nsamples - 2
196 return AliCaloFitResults( maxamp, ped , Ret::kCrude, maxf, timebinOffset,
197 timebinOffset, chi2, ndf, Ret::kDummy, AliCaloFitSubarray(index, maxrev, first, last) );
201 return AliCaloFitResults(kInvalid, kInvalid);
206 AliCaloRawAnalyzerPeakFinder::CopyVectors( const AliCaloPeakFinderVectors *const pfv )
211 for(int i = 0; i < PF::MAXSTART ; i++)
213 for( int j=0; j < PF::SAMPLERANGE; j++)
215 pfv->GetVector( i, j, fPFAmpVectors[i][j] , fPFTofVectors[i][j],
216 fPFAmpVectorsCoarse[i][j] , fPFTofVectorsCoarse[i][j] );
218 fPeakFinderVectors->SetVector( i, j, fPFAmpVectors[i][j], fPFTofVectors[i][j],
219 fPFAmpVectorsCoarse[i][j], fPFTofVectorsCoarse[i][j] );
225 AliFatal( "pfv = ZERO !!!!!!!");
231 AliCaloRawAnalyzerPeakFinder::LoadVectorsOCDB()
233 //Loading of Peak-Finder vectors from the
234 //Offline Condition Database (OCDB)
235 AliCDBEntry* entry = AliCDBManager::Instance()->Get("EMCAL/Calib/PeakFinder/");
239 //cout << __FILE__ << ":" << __LINE__ << ": Printing metadata !! " << endl;
240 //entry->PrintMetaData();
241 AliCaloPeakFinderVectors *pfv = (AliCaloPeakFinderVectors *)entry->GetObject();
244 cout << __FILE__ << ":" << __LINE__ << "_ ERRROR " << endl;
250 fIsInitialized = true;
257 AliCaloRawAnalyzerPeakFinder::WriteRootFile() const
258 { // Utility function to write Peak-Finder vectors to an root file
259 // The output is used to create an OCDB entry.
260 fPeakFinderVectors->PrintVectors();
261 TFile *f = new TFile("peakfindervectors2.root", "recreate" );
262 fPeakFinderVectors->Write();
269 AliCaloRawAnalyzerPeakFinder::PrintVectors()
270 { // Utility function to write Peak-Finder vectors
271 for(int i=0; i < 20; i++)
273 for( int j = 0; j < PF::MAXSTART; j ++ )
275 for( int k=0; k < PF::SAMPLERANGE; k++ )
277 cout << fPFAmpVectors[j][k][i] << "\t" ;
282 cout << __FILE__ << ":" << __LINE__ << ":.... DONE !!" << endl;