Line data Source code
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 : /*
17 : Author: R. GUERNANE LPSC Grenoble CNRS/IN2P3
18 : */
19 :
20 :
21 : #include "AliCaloRawAnalyzerFakeALTRO.h"
22 : #include "AliCaloBunchInfo.h"
23 : #include "AliCaloFitResults.h"
24 : #include "AliLog.h"
25 : #include "TMath.h"
26 : #include <stdexcept>
27 : #include <iostream>
28 : #include "TF1.h"
29 : #include "TGraph.h"
30 : #include "AliCaloConstants.h"
31 :
32 : using namespace std;
33 :
34 42 : ClassImp( AliCaloRawAnalyzerFakeALTRO )
35 :
36 :
37 8 : AliCaloRawAnalyzerFakeALTRO::AliCaloRawAnalyzerFakeALTRO() : AliCaloRawAnalyzerFitter("Chi Square Fit", "FakeAltro")
38 40 : {
39 : // constructor
40 :
41 8 : fAlgo= Algo::kFakeAltro;
42 16 : }
43 :
44 : AliCaloRawAnalyzerFakeALTRO::~AliCaloRawAnalyzerFakeALTRO()
45 0 : {
46 : // destructor
47 :
48 : //delete fTf1;
49 0 : }
50 :
51 : AliCaloFitResults
52 : AliCaloRawAnalyzerFakeALTRO::Evaluate( const vector<AliCaloBunchInfo> &bunchvector,
53 : UInt_t altrocfg1, UInt_t altrocfg2 )
54 : {
55 : // Extracting signal parameters using fitting
56 :
57 0 : short maxampindex; //index of maximum amplitude
58 0 : short maxamp; //Maximum amplitude
59 0 : int index = SelectBunch( bunchvector, &maxampindex, &maxamp );
60 :
61 0 : if( index >= 0)
62 : {
63 0 : Float_t ped = ReverseAndSubtractPed( &(bunchvector.at(index)) , altrocfg1, altrocfg2, fReversed );
64 0 : Float_t maxf = TMath::MaxElement( bunchvector.at(index).GetLength(), fReversed );
65 0 : short maxrev = maxampindex - bunchvector.at(index).GetStartBin();
66 : // timebinOffset is timebin value at maximum (maxrev)
67 0 : short timebinOffset = maxampindex - (bunchvector.at(index).GetLength()-1);
68 0 : Float_t time = (timebinOffset*TIMEBINWITH)-fL1Phase;
69 0 : if( maxf < fAmpCut || maxamp > fOverflowCut ) // (maxamp - ped) > fOverflowCut = Close to saturation (use low gain then)
70 : {
71 0 : return AliCaloFitResults( maxamp, ped, Ret::kCrude, maxf, time, (int)time, 0, 0, Ret::kDummy);
72 : }
73 0 : else if ( maxf >= fAmpCut )
74 : {
75 0 : int first = 0;
76 0 : int last = 0;
77 0 : SelectSubarray( fReversed, bunchvector.at(index).GetLength(), maxrev, &first, &last, fFitArrayCut );
78 0 : int nsamples = last - first + 1;
79 :
80 0 : if( ( nsamples ) >= fNsampleCut )
81 : {
82 0 : Float_t tmax = (maxrev - first); // local tmax estimate
83 0 : TGraph *graph = new TGraph( nsamples, fXaxis, &fReversed[first] );
84 0 : fTf1->SetParameter(0, maxf*fkEulerSquared );
85 0 : fTf1->SetParameter(1, tmax - fTau);
86 : // set rather loose parameter limits
87 0 : fTf1->SetParLimits(0, 0.5*maxf*fkEulerSquared, 2*maxf*fkEulerSquared );
88 0 : fTf1->SetParLimits(1, tmax - fTau - 4, tmax - fTau + 4);
89 :
90 0 : if (fFixTau) {
91 0 : fTf1->FixParameter(2, fTau);
92 0 : }
93 : else {
94 0 : fTf1->ReleaseParameter(2); // allow par. to vary
95 0 : fTf1->SetParameter(2, fTau);
96 : }
97 :
98 : Short_t tmpStatus = 0;
99 : try {
100 0 : tmpStatus = graph->Fit(fTf1, "Q0RW");
101 0 : }
102 : catch (const std::exception & e) {
103 0 : AliError( Form("TGraph Fit exception %s, fit status %d", e.what(),tmpStatus) );
104 0 : return AliCaloFitResults( maxamp, ped, Ret::kNoFit, maxf, time,
105 0 : (int)time, Ret::kDummy, Ret::kDummy, Ret::kDummy, AliCaloFitSubarray(index, maxrev, first, last) );
106 0 : }
107 :
108 0 : if( fVerbose == true )
109 : {
110 0 : AliCaloRawAnalyzer::PrintBunch( bunchvector.at(index) );
111 0 : PrintFitResult( fTf1 ) ;
112 0 : }
113 : // global tmax
114 0 : tmax = fTf1->GetParameter(1) + timebinOffset - (maxrev - first) // abs. t0
115 0 : + fTf1->GetParameter(2); // +tau, makes sum tmax
116 0 : Float_t timemax = (tmax*TIMEBINWITH)-fL1Phase;
117 0 : delete graph;
118 0 : return AliCaloFitResults( maxamp, ped , Ret::kFitPar,
119 0 : fTf1->GetParameter(0)/fkEulerSquared,
120 0 : timemax,
121 0 : (int)timemax,
122 0 : fTf1->GetChisquare(),
123 0 : fTf1->GetNDF(),
124 0 : Ret::kDummy, AliCaloFitSubarray(index, maxrev, first, last) );
125 :
126 : // delete graph;
127 :
128 : }
129 : else
130 : {
131 0 : Float_t chi2 = CalculateChi2(maxf, maxrev, first, last);
132 0 : Int_t ndf = last - first - 1; // nsamples - 2
133 0 : return AliCaloFitResults( maxamp, ped, Ret::kCrude, maxf, time,
134 0 : (int)time, chi2, ndf, Ret::kDummy, AliCaloFitSubarray(index, maxrev, first, last) );
135 : }
136 0 : } // ampcut
137 0 : }
138 0 : return AliCaloFitResults( Ret::kInvalid, Ret::kInvalid );
139 0 : }
140 :
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