Context Navigation

source: trunk/MagicSoft/Mars/mhcalib/MHCalibrationChargeBlindPix.cc@ 7725

Visit:

Last change on this file since 7725 was 5137, checked in by gaug, 20 years ago
* empty log message *
File size: 29.6 KB

Line
1	/* ======================================================================== *\
2	!
3	! *
4	! * This file is part of MARS, the MAGIC Analysis and Reconstruction
5	! * Software. It is distributed to you in the hope that it can be a useful
6	! * and timesaving tool in analysing Data of imaging Cerenkov telescopes.
7	! * It is distributed WITHOUT ANY WARRANTY.
8	! *
9	! * Permission to use, copy, modify and distribute this software and its
10	! * documentation for any purpose is hereby granted without fee,
11	! * provided that the above copyright notice appear in all copies and
12	! * that both that copyright notice and this permission notice appear
13	! * in supporting documentation. It is provided "as is" without express
14	! * or implied warranty.
15	! *
16	!
17	!
18	! Author(s): Markus Gaug 02/2004 <mailto:markus@ifae.es>
19	!
20	! Copyright: MAGIC Software Development, 2000-2004
21	!
22	!
23	\* ======================================================================== */
24
25	//////////////////////////////////////////////////////////////////////////////
26	//
27	// MHCalibrationChargeBlindPix
28	//
29	// Histogram class for the charge calibration of the Blind Pixel.
30	// Stores and fits the charges and stores the averaged assumed pedestal and
31	// single-phe FADC slice entries. Charges are taken from MExtractedSignalBlindPix.
32	// Performs the Single Photo-electron fit to extract the Poisson mean and its errors.
33	//
34	// Different fits can be chosen with the function SetFitFunc().
35	//
36	// The fit result is accepted under the condition that:
37	// 1) the Probability is greater than fProbLimit (default 0.001 == 99.7%)
38	// 2) at least fNumSinglePheLimit events are found in the single Photo-electron peak
39	//
40	// The single FADC slice entries are averaged and stored in fASinglePheFADCSlices, if
41	// their sum exceeds fSinglePheCut, otherwise in fAPedestalFADCSlices.
42	//
43	// Used numbers are the following:
44	//
45	// Electronic conversion factor:
46	// Assume, we have N_e electrons at the anode,
47	// thus a charge of N_e*e (e = electron charge) Coulomb.
48	//
49	// This charge is AC coupled and runs into a R_pre = 50 Ohm resistency.
50	// The corresponding current is amplified by a gain factor G_pre = 400
51	// (the precision of this value still has to be checked !!!) and again AC coupled to
52	// the output.
53	// The corresponding signal goes through the whole transmission and
54	// amplification chain and is digitized in the FADCs.
55	// The conversion Signal Area to FADC counts (Conv_trans) has been measured
56	// by David and Oscar to be approx. 3.9 pVs^-1
57	//
58	// Thus: Conversion FADC counts to Number of Electrons at Anode:
59	// FADC counts = (1/Conv_tran) * G_pre * R_pre * e * N_e = 8 * 10^-4 N_e.
60	//
61	// Also: FADC counts = 810^-4 GAIN * N_phe
62	//
63	// In the blind pixel, there is an additional pre-amplifier with an amplification of
64	// about 10. Therefore, we have for the blind pixel:
65	//
66	//
67	// FADC counts (Blind Pixel) = 810^-3 GAIN * N_phe
68	//
69	//////////////////////////////////////////////////////////////////////////////
70	#include "MHCalibrationChargeBlindPix.h"
71
72	#include <TStyle.h>
73	#include <TCanvas.h>
74	#include <TPaveText.h>
75	#include <TPaveStats.h>
76	#include <TGraph.h>
77
78	#include <TVector.h>
79	#include <TF1.h>
80	#include <TH1.h>
81	#include <TH2D.h>
82	#include <TRandom.h>
83
84	#include "MLog.h"
85	#include "MLogManip.h"
86
87	#include "MParList.h"
88
89	#include "MRawEvtPixelIter.h"
90
91	ClassImp(MHCalibrationChargeBlindPix);
92
93	using namespace std;
94
95	const Double_t MHCalibrationChargeBlindPix::gkElectronicAmp = 0.008;
96	const Double_t MHCalibrationChargeBlindPix::gkElectronicAmpErr = 0.002;
97	const Float_t MHCalibrationChargeBlindPix::gkSignalInitializer = -9999.;
98	const Float_t MHCalibrationChargeBlindPix::fgNumSinglePheLimit = 50.;
99	// --------------------------------------------------------------------------
100	//
101	// Default Constructor.
102	//
103	// Sets:
104	// - the default number for fNumSinglePheLimit (fgNumSinglePheLimit)
105	// - the default number of bins after stripping (30)
106	//
107	// Initializes:
108	// - all pointers to NULL
109	// - fASinglePheFADCSlices(0);
110	// - fAPedestalFADCSlices(0);
111	//
112	// Calls:
113	// - Clear()
114	//
115	MHCalibrationChargeBlindPix::MHCalibrationChargeBlindPix(const char name, const char title)
116	: fSinglePheFit(NULL),
117	fFitLegend(NULL),
118	fHSinglePheFADCSlices(NULL), fHPedestalFADCSlices(NULL)
119	{
120
121	fName = name ? name : "MHCalibrationChargeBlindPix";
122	fTitle = title ? title : "Statistics of the FADC sums of Blind Pixel calibration events";
123
124	fASinglePheFADCSlices.ResizeTo(1);
125	fAPedestalFADCSlices.ResizeTo(1);
126
127	SetNumSinglePheLimit();
128	SetProbLimit(0.001);
129	SetBinsAfterStripping(0);
130
131	Clear();
132	}
133
134	// --------------------------------------------------------------------------
135	//
136	// Default Destructor.
137	//
138	// Deletes (if Pointer is not NULL):
139	//
140	// - fFitLegend
141	// - fHSinglePheFADCSlices
142	// - fHPedestalFADCSlices
143	// - fSinglePheFit
144	//
145	MHCalibrationChargeBlindPix::~MHCalibrationChargeBlindPix()
146	{
147
148	//
149	// The next two lines are important for the case that
150	// the class has been stored to a file and is read again.
151	// In this case, the next two lines prevent a segm. violation
152	// in the destructor
153	//
154	gROOT->GetListOfFunctions()->Remove(fSinglePheFit);
155
156	if (fSinglePheFit)
157	delete fSinglePheFit;
158
159	if (fFitLegend)
160	delete fFitLegend;
161
162	if (fHSinglePheFADCSlices)
163	delete fHSinglePheFADCSlices;
164
165	if (fHPedestalFADCSlices)
166	delete fHPedestalFADCSlices;
167
168	}
169
170	// --------------------------------------------------------------------------
171	//
172	// Sets:
173	// - all variables to 0., except the fit result variables to gkSignalInitializer
174	// - all flags to kFALSE
175	// - all pointers to NULL
176	// - the default fit function (kEPoisson5)
177	//
178	// Deletes:
179	// - all pointers unequal NULL
180	//
181	// Calls:
182	// - MHCalibrationChargePix::Clear()
183	//
184	void MHCalibrationChargeBlindPix::Clear(Option_t *o)
185	{
186
187	fLambda = gkSignalInitializer;
188	fMu0 = gkSignalInitializer;
189	fMu1 = gkSignalInitializer;
190	fSigma0 = gkSignalInitializer;
191	fSigma1 = gkSignalInitializer;
192	fLambdaErr = gkSignalInitializer;
193	fMu0Err = gkSignalInitializer;
194	fMu1Err = gkSignalInitializer;
195	fSigma0Err = gkSignalInitializer;
196	fSigma1Err = gkSignalInitializer;
197
198	fLambdaCheck = gkSignalInitializer;
199	fLambdaCheckErr = gkSignalInitializer;
200
201	fFitFunc = kEPoisson5;
202
203	fNumSinglePhes = 0;
204	fNumPedestals = 0;
205
206	fChisquare = 0.;
207	fNDF = 0 ;
208	fProb = 0.;
209
210	SetSinglePheFitOK ( kFALSE );
211	SetPedestalFitOK ( kFALSE );
212
213	if (fFitLegend)
214	{
215	delete fFitLegend;
216	fFitLegend = NULL;
217	}
218
219	if (fSinglePheFit)
220	{
221	delete fSinglePheFit;
222	fSinglePheFit = NULL;
223	}
224
225	if (fHSinglePheFADCSlices)
226	{
227	delete fHSinglePheFADCSlices;
228	fHSinglePheFADCSlices = NULL;
229	}
230
231	if (fHPedestalFADCSlices)
232	{
233	delete fHPedestalFADCSlices;
234	fHPedestalFADCSlices = NULL;
235	}
236
237	MHCalibrationPix::Clear();
238	return;
239	}
240
241	/*
242	// --------------------------------------------------------------------------
243	//
244	// Our own clone function is necessary since root 3.01/06 or Mars 0.4
245	// I don't know the reason.
246	//
247	// Creates new MHCalibrationCam
248	//
249	TObject MHCalibrationChargeBlindPix::Clone(const char ) const
250	{
251
252	MHCalibrationChargeBlindPix *pix = new MHCalibrationChargeBlindPix();
253	this->Copy(*pix);
254
255	this->fHGausHist.Copy(pix->fHGausHist);
256	this->fSinglePheFit->Copy(*(pix->fSinglePheFit));
257	this->fHSinglePheFADCSlices->Copy(*(pix->fHSinglePheFADCSlices));
258	this->fHPedestalFADCSlices->Copy(*(pix->fHPedestalFADCSlices));
259
260
261	return pix;
262	}
263	*/
264
265	// --------------------------------------------------------------------------
266	//
267	// Set bit kSinglePheFitOK from outside
268	//
269	void MHCalibrationChargeBlindPix::SetSinglePheFitOK (const Bool_t b )
270	{
271	b ? SETBIT(fFlags,kSinglePheFitOK) : CLRBIT(fFlags,kSinglePheFitOK);
272	}
273
274	// --------------------------------------------------------------------------
275	//
276	// Set bit kPedestalFitOK from outside
277	//
278	void MHCalibrationChargeBlindPix::SetPedestalFitOK(const Bool_t b)
279	{
280	b ? SETBIT(fFlags,kPedestalFitOK) : CLRBIT(fFlags,kPedestalFitOK);
281	}
282
283	// --------------------------------------------------------------------------
284	//
285	// Ask for status of bit kSinglePheFitOK
286	//
287	const Bool_t MHCalibrationChargeBlindPix::IsSinglePheFitOK() const
288	{
289	return TESTBIT(fFlags,kSinglePheFitOK);
290	}
291
292	// --------------------------------------------------------------------------
293	//
294	// Ask for status of bit kPedestalFitOK
295	//
296	const Bool_t MHCalibrationChargeBlindPix::IsPedestalFitOK() const
297	{
298	return TESTBIT(fFlags,kPedestalFitOK);
299	}
300
301	// --------------------------------------------------------------------------
302	//
303	// Normalizes fASinglePheFADCSlices and fAPedestalFADCSlices
304	//
305	void MHCalibrationChargeBlindPix::FinalizeSinglePheSpectrum()
306	{
307
308	if (fNumSinglePhes > 1)
309	for (Int_t i=0;i<fASinglePheFADCSlices.GetNrows();i++)
310	fASinglePheFADCSlices[i] = fASinglePheFADCSlices[i]/fNumSinglePhes;
311	if (fNumPedestals > 1)
312	for (Int_t i=0;i<fAPedestalFADCSlices.GetNrows();i++)
313	fAPedestalFADCSlices[i] = fAPedestalFADCSlices[i]/fNumPedestals;
314	}
315
316	// --------------------------------------------------------------------------
317	//
318	// Checks again for the size and fills fASinglePheFADCSlices with the FADC slice entries
319	//
320	void MHCalibrationChargeBlindPix::FillSinglePheFADCSlices(const MRawEvtPixelIter &iter)
321	{
322
323	const Int_t n = iter.GetNumHiGainSamples() + iter.GetNumLoGainSamples();
324
325	if (fASinglePheFADCSlices.GetNrows() < n)
326	fASinglePheFADCSlices.ResizeTo(n);
327
328	Int_t i=0;
329
330	Byte_t *start = iter.GetHiGainSamples();
331	Byte_t *end = start + iter.GetNumHiGainSamples();
332
333	for (Byte_t *ptr = start; ptr < end; ptr++, i++)
334	fASinglePheFADCSlices(i) = fASinglePheFADCSlices(i) + (Float_t)*ptr;
335
336	start = iter.GetLoGainSamples();
337	end = start + iter.GetNumLoGainSamples();
338
339	for (Byte_t *ptr = start; ptr < end; ptr++, i++)
340	fASinglePheFADCSlices(i) = fASinglePheFADCSlices(i) + (Float_t)*ptr;
341
342	fNumSinglePhes++;
343	}
344
345	// --------------------------------------------------------------------------
346	//
347	// Checks again for the size and fills fAPedestalFADCSlices with the FADC slice entries
348	//
349	void MHCalibrationChargeBlindPix::FillPedestalFADCSlices(const MRawEvtPixelIter &iter)
350	{
351
352	const Int_t n = iter.GetNumHiGainSamples() + iter.GetNumLoGainSamples();
353
354	if (fAPedestalFADCSlices.GetNrows() < n)
355	fAPedestalFADCSlices.ResizeTo(n);
356
357	Int_t i = 0;
358	Byte_t *start = iter.GetHiGainSamples();
359	Byte_t *end = start + iter.GetNumHiGainSamples();
360
361	for (Byte_t *ptr = start; ptr < end; ptr++, i++)
362	fAPedestalFADCSlices(i) = fAPedestalFADCSlices(i)+ (Float_t)*ptr;
363
364	start = iter.GetLoGainSamples();
365	end = start + iter.GetNumLoGainSamples();
366
367	for (Byte_t *ptr = start; ptr < end; ptr++, i++)
368	fAPedestalFADCSlices(i) = fAPedestalFADCSlices(i)+ (Float_t)*ptr;
369
370	fNumPedestals++;
371	}
372
373
374	// --------------------------------------------------------------------------
375	//
376	// Task to simulate single phe spectrum with the given parameters
377	//
378	Bool_t MHCalibrationChargeBlindPix::SimulateSinglePhe(Double_t lambda, Double_t mu0, Double_t mu1, Double_t sigma0, Double_t sigma1)
379	{
380
381	gRandom->SetSeed();
382
383	if (fHGausHist.GetIntegral() != 0)
384	{
385	*fLog << err << "Histogram " << fHGausHist.GetTitle() << " is already filled. " << endl;
386	*fLog << err << "Create new class MHCalibrationBlindPixel for simulation! " << endl;
387	return kFALSE;
388	}
389
390	if (!InitFit())
391	return kFALSE;
392
393	for (Int_t i=0;i<10000; i++)
394	fHGausHist.Fill(fSinglePheFit->GetRandom());
395
396	return kTRUE;
397	}
398
399	// --------------------------------------------------------------------------
400	//
401	// - Get the ranges from the stripped histogram
402	// - choose reasonable start values for the fit
403	// - initialize the fit function depending on fFitFunc
404	// - initialize parameter names and limits depending on fFitFunc
405	//
406	Bool_t MHCalibrationChargeBlindPix::InitFit()
407	{
408
409	//
410	// Get the fitting ranges
411	//
412	Axis_t rmin = fHGausHist.GetBinCenter(fHGausHist.GetXaxis()->GetFirst());
413	Axis_t rmax = fHGausHist.GetBinCenter(fHGausHist.GetXaxis()->GetLast());
414
415	if (rmin < 0.)
416	rmin = 0.;
417
418	//
419	// First guesses for the fit (should be as close to reality as possible,
420	// otherwise the fit goes gaga because of high number of dimensions ...
421	//
422	const Stat_t entries = fHGausHist.Integral("width");
423	const Double_t lambda_guess = 0.5;
424	//const Double_t maximum_bin = fHGausHist.GetBinCenter(fHGausHist.GetMaximumBin());
425	const Double_t norm = entries/TMath::Sqrt(TMath::TwoPi());
426
427	//
428	// Initialize the fit function
429	//
430	switch (fFitFunc)
431	{
432	case kEPoisson4:
433	fSinglePheFit = new TF1("SinglePheFit",&fPoissonKto4,rmin,rmax,6);
434	rmin += 6.5;
435	break;
436	case kEPoisson5:
437	fSinglePheFit = new TF1("SinglePheFit",&fPoissonKto5,rmin,rmax,6);
438	rmin = 0.;
439	break;
440	case kEPoisson6:
441	fSinglePheFit = new TF1("SinglePheFit",&fPoissonKto6,rmin,rmax,6);
442	break;
443	case kEPolya:
444	fSinglePheFit = new TF1("SinglePheFit",&fPolya,rmin,rmax,8);
445	break;
446	case kEMichele:
447	fSinglePheFit = new TF1("SinglePheFit",&fFitFuncMichele,rmin,rmax,9);
448	break;
449	default:
450	*fLog << warn << "WARNING: Could not find Fit Function for Blind Pixel " << endl;
451	return kFALSE;
452	break;
453	}
454
455	if (!fSinglePheFit)
456	{
457	*fLog << warn << dbginf << "WARNING: Could not create fit function for Single Phe fit" << endl;
458	return kFALSE;
459	}
460
461	//
462	// For the fits, we have to take special care since ROOT
463	// has stored the function pointer in a global list which
464	// lead to removing the object twice. We have to take out
465	// the following functions of the global list of functions
466	// as well:
467	//
468	gROOT->GetListOfFunctions()->Remove(fSinglePheFit);
469
470	const Double_t mu_0_guess = 13.5;
471	const Double_t si_0_guess = 2.5;
472	const Double_t mu_1_guess = 30.;
473	const Double_t si_1_guess = si_0_guess + si_0_guess;
474	// Michele
475	const Double_t lambda_1cat_guess = 1.00;
476	const Double_t lambda_1dyn_guess = lambda_1cat_guess/10.;
477	const Double_t mu_1cat_guess = 50.;
478	const Double_t mu_1dyn_guess = 17.;
479	const Double_t si_1cat_guess = si_0_guess + si_0_guess;
480	const Double_t si_1dyn_guess = si_0_guess + si_0_guess/2.;
481	// Polya
482	const Double_t excessPoisson_guess = 0.5;
483	const Double_t delta1_guess = 8.;
484	const Double_t delta2_guess = 5.;
485	const Double_t electronicAmp_guess = gkElectronicAmp;
486	const Double_t electronicAmp_limit = gkElectronicAmpErr;
487
488	//
489	// Initialize boundaries and start parameters
490	//
491	switch (fFitFunc)
492	{
493
494	case kEPoisson4:
495	fSinglePheFit->SetParNames( "#lambda", "#mu_{0}", "#mu_{1}", "#sigma_{0}", "#sigma_{1}","Area");
496	fSinglePheFit->SetParameters(lambda_guess,mu_0_guess,mu_1_guess,si_0_guess,si_1_guess,norm);
497	fSinglePheFit->SetParLimits(0,0.,2.);
498	fSinglePheFit->SetParLimits(1,10.,17.);
499	fSinglePheFit->SetParLimits(2,17.,50.);
500	fSinglePheFit->SetParLimits(3,1.,5.);
501	fSinglePheFit->SetParLimits(4,5.,30.);
502	fSinglePheFit->SetParLimits(5,norm-(0.5norm),norm+(0.7norm));
503	break;
504	case kEPoisson5:
505	case kEPoisson6:
506	fSinglePheFit->SetParNames("#lambda","#mu_{0}","#mu_{1}","#sigma_{0}","#sigma_{1}","Area");
507	fSinglePheFit->SetParameters(lambda_guess,mu_0_guess,800.,si_0_guess,500.,norm);
508	fSinglePheFit->SetParLimits(0,0.,2.);
509	fSinglePheFit->SetParLimits(1,0.,100.);
510	fSinglePheFit->SetParLimits(2,300.,1500.);
511	fSinglePheFit->SetParLimits(3,30.,250.);
512	fSinglePheFit->SetParLimits(4,100.,1000.);
513	fSinglePheFit->SetParLimits(5,norm/1.5,norm*1.5);
514	break;
515
516	case kEPolya:
517	fSinglePheFit->SetParameters(lambda_guess, excessPoisson_guess,
518	delta1_guess,delta2_guess,
519	electronicAmp_guess,
520	10.,
521	norm,
522	0.);
523	fSinglePheFit->SetParNames("#lambda","b_{tot}",
524	"#delta_{1}","#delta_{2}",
525	"amp_{e}","#sigma_{0}",
526	"Area", "#mu_{0}");
527	fSinglePheFit->SetParLimits(0,0.,1.);
528	fSinglePheFit->SetParLimits(1,0.,1.);
529	fSinglePheFit->SetParLimits(2,6.,12.);
530	fSinglePheFit->SetParLimits(3,3.,8.);
531	fSinglePheFit->SetParLimits(4,electronicAmp_guess-electronicAmp_limit,
532	electronicAmp_guess+electronicAmp_limit);
533	fSinglePheFit->SetParLimits(5,0.,40.);
534	fSinglePheFit->SetParLimits(6,norm-0.1,norm+0.1);
535	fSinglePheFit->SetParLimits(7,-10.,10.);
536	break;
537	case kEMichele:
538	fSinglePheFit->SetParNames("#lambda_{cat}","#lambda_{dyn}",
539	"#mu_{0}","#mu_{1cat}","#mu_{1dyn}",
540	"#sigma_{0}","#sigma_{1cat}","#sigma_{1dyn}",
541	"Area");
542	fSinglePheFit->SetParameters(lambda_1cat_guess, lambda_1dyn_guess,
543	mu_0_guess, mu_1cat_guess,mu_1dyn_guess,
544	si_0_guess, si_1cat_guess,si_1dyn_guess,
545	norm);
546	fSinglePheFit->SetParLimits(0,0.01,2.0);
547	fSinglePheFit->SetParLimits(1,0.,0.5);
548	fSinglePheFit->SetParLimits(2,10.,16.);
549	fSinglePheFit->SetParLimits(3,25.,50.);
550	fSinglePheFit->SetParLimits(4,16.,18.5);
551	fSinglePheFit->SetParLimits(5,1.,5.);
552	fSinglePheFit->SetParLimits(6,10.,50.);
553	fSinglePheFit->SetParLimits(7,5.,10.);
554	fSinglePheFit->SetParLimits(8,norm/2.,norm*2.5);
555	break;
556
557	default:
558	*fLog << warn << "WARNING: Could not find Fit Function for Blind Pixel " << endl;
559	return kFALSE;
560	break;
561	}
562
563	fSinglePheFit->SetRange(rmin,rmax);
564
565	return kTRUE;
566	}
567
568	// --------------------------------------------------------------------------
569	//
570	// - Retrieve the parameters depending on fFitFunc
571	// - Retrieve probability, Chisquare and NDF
572	//
573	void MHCalibrationChargeBlindPix::ExitFit()
574	{
575
576
577	//
578	// Finalize
579	//
580	switch (fFitFunc)
581	{
582
583	case kEPoisson4:
584	case kEPoisson5:
585	case kEPoisson6:
586	case kEPoisson7:
587	fLambda = fSinglePheFit->GetParameter(0);
588	fMu0 = fSinglePheFit->GetParameter(1);
589	fMu1 = fSinglePheFit->GetParameter(2);
590	fSigma0 = fSinglePheFit->GetParameter(3);
591	fSigma1 = fSinglePheFit->GetParameter(4);
592
593	fLambdaErr = fSinglePheFit->GetParError(0);
594	fMu0Err = fSinglePheFit->GetParError(1);
595	fMu1Err = fSinglePheFit->GetParError(2);
596	fSigma0Err = fSinglePheFit->GetParError(3);
597	fSigma1Err = fSinglePheFit->GetParError(4);
598	break;
599	case kEPolya:
600	fLambda = fSinglePheFit->GetParameter(0);
601	fMu0 = fSinglePheFit->GetParameter(7);
602	fMu1 = 0.;
603	fSigma0 = fSinglePheFit->GetParameter(5);
604	fSigma1 = 0.;
605
606	fLambdaErr = fSinglePheFit->GetParError(0);
607	fMu0Err = fSinglePheFit->GetParError(7);
608	fMu1Err = 0.;
609	fSigma0Err = fSinglePheFit->GetParError(5);
610	fSigma1Err = 0.;
611	case kEMichele:
612	fLambda = fSinglePheFit->GetParameter(0);
613	fMu0 = fSinglePheFit->GetParameter(2);
614	fMu1 = fSinglePheFit->GetParameter(3);
615	fSigma0 = fSinglePheFit->GetParameter(5);
616	fSigma1 = fSinglePheFit->GetParameter(6);
617
618	fLambdaErr = fSinglePheFit->GetParError(0);
619	fMu0Err = fSinglePheFit->GetParError(2);
620	fMu1Err = fSinglePheFit->GetParError(3);
621	fSigma0Err = fSinglePheFit->GetParError(5);
622	fSigma1Err = fSinglePheFit->GetParError(6);
623	break;
624	default:
625	break;
626	}
627
628	fProb = fSinglePheFit->GetProb();
629	fChisquare = fSinglePheFit->GetChisquare();
630	fNDF = fSinglePheFit->GetNDF();
631
632	*fLog << all << "Results of the Blind Pixel Fit: " << endl;
633	*fLog << all << "Chisquare: " << fChisquare << endl;
634	*fLog << all << "DoF: " << fNDF << endl;
635	*fLog << all << "Probability: " << fProb << endl;
636
637	}
638
639	// --------------------------------------------------------------------------
640	//
641	// - Executes InitFit()
642	// - Fits the fHGausHist with fSinglePheFit
643	// - Executes ExitFit()
644	//
645	// The fit result is accepted under condition:
646	// 1) The results are not nan's
647	// 2) The NDF is not smaller than fNDFLimit (5)
648	// 3) The Probability is greater than fProbLimit (default 0.001 == 99.9%)
649	// 4) at least fNumSinglePheLimit events are in the single Photo-electron peak
650	//
651	Bool_t MHCalibrationChargeBlindPix::FitSinglePhe(Option_t *opt)
652	{
653
654	if (!InitFit())
655	return kFALSE;
656
657	fHGausHist.Fit(fSinglePheFit,opt);
658
659	ExitFit();
660
661	//
662	// The fit result is accepted under condition:
663	// 1) The results are not nan's
664	// 2) The NDF is not smaller than fNDFLimit (5)
665	// 3) The Probability is greater than fProbLimit (default 0.001 == 99.9%)
666	// 4) at least fNumSinglePheLimit events are in the single Photo-electron peak
667	//
668	if ( TMath::IsNaN(fLambda)
669	\|\| TMath::IsNaN(fLambdaErr)
670	\|\| TMath::IsNaN(fProb)
671	\|\| TMath::IsNaN(fMu0)
672	\|\| TMath::IsNaN(fMu0Err)
673	\|\| TMath::IsNaN(fMu1)
674	\|\| TMath::IsNaN(fMu1Err)
675	\|\| TMath::IsNaN(fSigma0)
676	\|\| TMath::IsNaN(fSigma0Err)
677	\|\| TMath::IsNaN(fSigma1)
678	\|\| TMath::IsNaN(fSigma1Err)
679	\|\| fNDF < fNDFLimit
680	\|\| fProb < fProbLimit )
681	return kFALSE;
682
683	const Stat_t entries = fHGausHist.Integral("width");
684	const Float_t numSinglePhe = TMath::Exp(-1.0fLambda)fLambda*entries;
685
686	if (numSinglePhe < fNumSinglePheLimit)
687	{
688	*fLog << warn << "WARNING - Statistics is too low: Only " << numSinglePhe
689	<< " in the Single Photo-Electron peak " << endl;
690	return kFALSE;
691	}
692	else
693	*fLog << all << numSinglePhe << " in Single Photo-Electron peak " << endl;
694
695	SetSinglePheFitOK();
696	return kTRUE;
697	}
698
699	// --------------------------------------------------------------------------
700	//
701	// - Retrieves limits for the fit
702	// - Fits the fHGausHist with Gauss
703	// - Retrieves the results to fLambdaCheck and fLambdaCheckErr
704	// - Sets a flag IsPedestalFitOK()
705	//
706	void MHCalibrationChargeBlindPix::FitPedestal (Option_t *opt)
707	{
708
709	// Perform the cross-check fitting only the pedestal:
710	const Axis_t rmin = 0.;
711	// const Axis_t rmax = fHGausHist.GetBinCenter(fHGausHist.GetMaximumBin());
712	const Axis_t rmax = fSinglePheCut;
713
714	FitGaus(opt, rmin, rmax);
715
716	const Stat_t entries = fHGausHist.Integral("width");
717	const Double_t pedarea = fFGausFit->Integral(0.,fSinglePheCut);
718
719	fLambdaCheck = TMath::Log(entries/pedarea);
720	// estimate the error by the error of the obtained area from the Gauss-function:
721	fLambdaCheckErr = fFGausFit->GetParError(0)/fFGausFit->GetParameter(0);
722
723	SetPedestalFitOK(IsGausFitOK());
724	return;
725	}
726
727
728	// -------------------------------------------------------------------------
729	//
730	// Draw a legend with the fit results
731	//
732	void MHCalibrationChargeBlindPix::DrawLegend(Option_t *opt)
733	{
734
735	TString option(opt);
736
737	if (!fFitLegend)
738	{
739	fFitLegend = new TPaveText(0.05,0.05,0.95,0.95);
740	fFitLegend->SetLabel(Form("%s%s", "Results of the single PhE Fit (",
741	(fFitFunc == kEPoisson4) ? "Poisson(k=4))" :
742	(fFitFunc == kEPoisson5) ? "Poisson(k=5))" :
743	(fFitFunc == kEPoisson6) ? "Poisson(k=6))" :
744	(fFitFunc == kEPolya ) ? "Polya(k=4))" :
745	(fFitFunc == kEMichele ) ? "Michele)"
746	: " none )" ));
747	fFitLegend->SetTextSize(0.05);
748	}
749	else
750	fFitLegend->Clear();
751
752	const TString line1 =
753	Form("Mean: #lambda = %2.2f #pm %2.2f",fLambda,fLambdaErr);
754	TText *t1 = fFitLegend->AddText(line1.Data());
755	t1->SetBit(kCanDelete);
756
757	const TString line6 =
758	Form("Mean #lambda_{check} = %2.2f #pm %2.2f",fLambdaCheck,fLambdaCheckErr);
759	TText *t2 = fFitLegend->AddText(line6.Data());
760	t2->SetBit(kCanDelete);
761
762	if (option.Contains("datacheck"))
763	{
764	if (fLambda + 3.fLambdaErr < fLambdaCheck - 3.fLambdaCheckErr
765	\|\|
766	fLambda - 3.fLambdaErr > fLambdaCheck + 3.fLambdaCheckErr )
767	{
768	TText *t = fFitLegend->AddText("#lambda and #lambda_{check} more than 3#sigma apart!");
769	t->SetBit(kCanDelete);
770	}
771	}
772	else
773	{
774
775	const TString line2 =
776	Form("Pedestal: #mu_{0} = %2.2f #pm %2.2f",fMu0,fMu0Err);
777	TText *t3 = fFitLegend->AddText(line2.Data());
778	t3->SetBit(kCanDelete);
779
780	const TString line3 =
781	Form("Width Pedestal: #sigma_{0} = %2.2f #pm %2.2f",fSigma0,fSigma0Err);
782	TText *t4 = fFitLegend->AddText(line3.Data());
783	t4->SetBit(kCanDelete);
784
785	const TString line4 =
786	Form("1^{st} Phe-peak: #mu_{1} = %2.2f #pm %2.2f",fMu1,fMu1Err);
787	TText *t5 = fFitLegend->AddText(line4.Data());
788	t5->SetBit(kCanDelete);
789
790	const TString line5 =
791	Form("Width 1^{st} Phe-peak: #sigma_{1} = %2.2f #pm %2.2f",fSigma1,fSigma1Err);
792	TText *t6 = fFitLegend->AddText(line5.Data());
793	t6->SetBit(kCanDelete);
794	}
795
796	const TString line7 =
797	Form("#chi^{2} / N_{dof}: %4.2f / %3i",fChisquare,fNDF);
798	TText *t7 = fFitLegend->AddText(line7.Data());
799	t7->SetBit(kCanDelete);
800
801	const TString line8 =
802	Form("Probability: %6.4f ",fProb);
803	TText *t8 = fFitLegend->AddText(line8.Data());
804	t8->SetBit(kCanDelete);
805
806	if (IsSinglePheFitOK())
807	{
808	TText *t = fFitLegend->AddText("Result of the Fit: OK");
809	t->SetBit(kCanDelete);
810	}
811	else
812	{
813	TText *t = fFitLegend->AddText("Result of the Fit: NOT OK");
814	t->SetBit(kCanDelete);
815	}
816
817	fFitLegend->SetFillColor(IsSinglePheFitOK() ? 80 : 2);
818	fFitLegend->Draw();
819
820	return;
821	}
822
823
824	// -------------------------------------------------------------------------
825	//
826	// Draw the histogram
827	//
828	// The following options can be chosen:
829	//
830	// "": displays the fHGausHist, the fits, the legend and fASinglePheFADCSlices and fAPedestalFADCSlices
831	// "all": executes additionally MHGausEvents::Draw(), with option "fourierevents"
832	// "datacheck" display the fHGausHist, the fits and the legend
833	//
834	void MHCalibrationChargeBlindPix::Draw(Option_t *opt)
835	{
836
837	TString option(opt);
838	option.ToLower();
839
840	Int_t win = 1;
841
842	TVirtualPad *oldpad = gPad ? gPad : MH::MakeDefCanvas(this,900, 600);
843	TVirtualPad *pad = NULL;
844
845	if (option.Contains("all"))
846	{
847	option.ReplaceAll("all","");
848	oldpad->Divide(2,1);
849	win = 2;
850	oldpad->cd(1);
851	TVirtualPad *newpad = gPad;
852	pad = newpad;
853	pad->Divide(2,2);
854	pad->cd(1);
855	}
856	else if (option.Contains("datacheck"))
857	{
858	pad = oldpad;
859	pad->Divide(1,2);
860	pad->cd(1);
861	fHGausHist.SetStats(0);
862	}
863	else
864	{
865	pad = oldpad;
866	pad->Divide(2,2);
867	pad->cd(1);
868	}
869
870	if (!IsEmpty() && !IsOnlyOverflow() && !IsOnlyUnderflow())
871	gPad->SetLogy();
872
873	gPad->SetTicks();
874
875	fHGausHist.Draw();
876	if (fFGausFit )
877	{
878	fFGausFit->SetLineColor(kBlue);
879	fFGausFit->Draw("same");
880	if (!option.Contains("datacheck"))
881	{
882	TLine *line = new TLine(fSinglePheCut, 0., fSinglePheCut, 10.);
883	line->SetBit(kCanDelete);
884	line->SetLineColor(kBlue);
885	line->SetLineWidth(3);
886	line->DrawLine(fSinglePheCut, 0., fSinglePheCut, 2.);
887	}
888	}
889
890	if (fSinglePheFit)
891	{
892	fSinglePheFit->SetFillStyle(0);
893	fSinglePheFit->SetLineWidth(3);
894	fSinglePheFit->SetLineColor(IsSinglePheFitOK() ? kGreen : kRed);
895	fSinglePheFit->Draw("same");
896	}
897
898	pad->cd(2);
899	DrawLegend(option.Data());
900
901	if (option.Contains("datacheck"))
902	return;
903
904	pad->cd(3);
905
906	if (fASinglePheFADCSlices.GetNrows()!=1)
907	{
908	if (fHSinglePheFADCSlices)
909	delete fHSinglePheFADCSlices;
910
911	fHSinglePheFADCSlices = new TH1F(fASinglePheFADCSlices);
912	fHSinglePheFADCSlices->SetName("SinglePheFADCSlices");
913	fHSinglePheFADCSlices->SetTitle(Form("%s%4.1f","Assumed Single Phe FADC Slices, Sum > ",fSinglePheCut));
914	fHSinglePheFADCSlices->SetXTitle("FADC slice number");
915	fHSinglePheFADCSlices->SetYTitle("FADC counts");
916	const Int_t nbins = fHSinglePheFADCSlices->GetNbinsX();
917	TH2D *nulls = new TH2D("Nulls",fHSinglePheFADCSlices->GetTitle(),nbins,0.,
918	fHSinglePheFADCSlices->GetXaxis()->GetBinCenter(nbins),
919	100,0.,50.);
920	nulls->SetDirectory(NULL);
921	nulls->SetBit(kCanDelete);
922	nulls->GetXaxis()->SetTitle(fHSinglePheFADCSlices->GetXaxis()->GetTitle());
923	nulls->GetYaxis()->SetTitle(fHSinglePheFADCSlices->GetYaxis()->GetTitle());
924	nulls->GetXaxis()->CenterTitle();
925	nulls->GetYaxis()->CenterTitle();
926	nulls->SetStats(0);
927	nulls->Draw();
928	fHSinglePheFADCSlices->Draw("same");
929	}
930
931	pad->cd(4);
932	if (fAPedestalFADCSlices.GetNrows()!=1)
933	{
934
935	if (fHPedestalFADCSlices)
936	delete fHPedestalFADCSlices;
937
938	fHPedestalFADCSlices = new TH1F(fAPedestalFADCSlices);
939	fHPedestalFADCSlices->SetName("PedestalFADCSlices");
940	fHPedestalFADCSlices->SetTitle(Form("%s%4.1f","Pedestal FADC Slices, Sum < ",fSinglePheCut));
941	fHPedestalFADCSlices->SetXTitle("FADC slice number");
942	fHPedestalFADCSlices->SetYTitle("FADC counts");
943	const Int_t nbins = fHPedestalFADCSlices->GetNbinsX();
944	TH2D *nullp = new TH2D("Nullp",fHPedestalFADCSlices->GetTitle(),nbins,0.,
945	fHPedestalFADCSlices->GetXaxis()->GetBinCenter(nbins),
946	100,0.,50.);
947	nullp->SetDirectory(NULL);
948	nullp->SetBit(kCanDelete);
949	nullp->GetXaxis()->SetTitle(fHPedestalFADCSlices->GetXaxis()->GetTitle());
950	nullp->GetYaxis()->SetTitle(fHPedestalFADCSlices->GetYaxis()->GetTitle());
951	nullp->GetXaxis()->CenterTitle();
952	nullp->GetYaxis()->CenterTitle();
953	nullp->SetStats(0);
954	nullp->Draw();
955	fHPedestalFADCSlices->Draw("same");
956	}
957
958	if (win < 2)
959	return;
960
961	oldpad->cd(2);
962	MHCalibrationPix::Draw("fourierevents");
963	}
964
965
966
967
968
969
970
971
972
973
974

Note: See TracBrowser for help on using the repository browser.

Download in other formats: