source: trunk/MagicSoft/Mars/mhcalib/MHCalibrationTestCam.cc@ 4940

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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// MHCalibrationTestCam
27//
28// Fills the calibrated signal from an MCerPhotEvt into
29// MHCalibrationPix for every:
30//
31// - Pixel, stored in the TObjArray's MHCalibrationCam::fHiGainArray
32// or MHCalibrationCam::fHiGainArray, respectively.
33//
34// - Average pixel per AREA index (e.g. inner and outer for the MAGIC camera),
35// stored in the TObjArray's MHCalibrationCam::fAverageHiGainAreas and
36// MHCalibrationCam::fAverageHiGainAreas
37//
38// - Average pixel per camera SECTOR (e.g. sectors 1-6 for the MAGIC camera),
39// stored in the TObjArray's MHCalibrationCam::fAverageHiGainSectors
40// and MHCalibrationCam::fAverageHiGainSectors
41//
42// The signals are filled into a histogram and an array, in order to perform
43// a Fourier analysis (see MHGausEvents). The signals are moreover averaged on an
44// event-by-event basis and written into the corresponding average pixels.
45//
46// The histograms are fitted to a Gaussian, mean and sigma with its errors
47// and the fit probability are extracted. If none of these values are NaN's and
48// if the probability is bigger than MHGausEvents::fProbLimit (default: 0.5%),
49// the fit is declared valid.
50// Otherwise, the fit is repeated within ranges of the previous mean
51// +- MHCalibrationPix::fPickupLimit (default: 5) sigma (see MHCalibrationPix::RepeatFit())
52// In case this does not make the fit valid, the histogram means and RMS's are
53// taken directly (see MHCalibrationPix::BypassFit()) and the following flags are set:
54// - MBadPixelsPix::SetUncalibrated( MBadPixelsPix::kHiGainNotFitted ) and
55// - MBadPixelsPix::SetUnsuitable( MBadPixelsPix::kUnreliableRun )
56//
57// Outliers of more than MHCalibrationPix::fPickupLimit (default: 5) sigmas
58// from the mean are counted as Pickup events (stored in MHCalibrationPix::fPickup)
59//
60// The class also fills arrays with the signal vs. event number, creates a fourier
61// spectrum (see MHGausEvents::CreateFourierSpectrum()) and investigates if the
62// projected fourier components follow an exponential distribution.
63// In case that the probability of the exponential fit is less than
64// MHGausEvents::fProbLimit (default: 0.5%), the following flags are set:
65// - MBadPixelsPix::SetUncalibrated( MBadPixelsPix::kHiGainOscillating ) and
66// - MBadPixelsPix::SetUnsuitable( MBadPixelsPix::kUnreliableRun )
67//
68// This same procedure is performed for the average pixels.
69//
70// The following results are written into an MCalibrationCam:
71//
72// - MCalibrationPix::SetMean()
73// - MCalibrationPix::SetMeanErr()
74// - MCalibrationPix::SetSigma()
75// - MCalibrationPix::SetSigmaErr()
76// - MCalibrationPix::SetProb()
77// - MCalibrationPix::SetNumPickup()
78//
79// For all averaged areas, the fitted sigma is multiplied with the square root of
80// the number involved pixels in order to be able to compare it to the average of
81// sigmas in the camera.
82//
83/////////////////////////////////////////////////////////////////////////////
84#include "MHCalibrationTestCam.h"
85
86#include "MHCalibrationPix.h"
87
88#include "MLog.h"
89#include "MLogManip.h"
90
91#include "MParList.h"
92
93#include "MCalibrationTestCam.h"
94
95#include "MCalibrationCam.h"
96#include "MCalibrationPix.h"
97
98#include "MCerPhotEvt.h"
99#include "MCerPhotPix.h"
100
101#include "MGeomCam.h"
102#include "MGeomPix.h"
103
104#include "MBadPixelsCam.h"
105#include "MBadPixelsPix.h"
106
107ClassImp(MHCalibrationTestCam);
108
109using namespace std;
110
111const Int_t MHCalibrationTestCam::fgTestNbins = 900;
112const Axis_t MHCalibrationTestCam::fgTestFirst = -5.;
113const Axis_t MHCalibrationTestCam::fgTestLast = 5.;
114// --------------------------------------------------------------------------
115//
116// Default Constructor.
117//
118// Sets:
119// - fTestNbins to fgTestNbins
120// - fTestFirst to fgTestFirst
121// - fTestLast to fgTestLast
122//
123MHCalibrationTestCam::MHCalibrationTestCam(const char *name, const char *title)
124{
125
126 fName = name ? name : "MHCalibrationTestCam";
127 fTitle = title ? title : "Histogram class for testing the calibration";
128
129 SetTestNbins();
130 SetTestFirst();
131 SetTestLast ();
132}
133
134// --------------------------------------------------------------------------
135//
136// Gets or creates the pointers to:
137// - MCalibrationTestCam
138//
139// Searches pointer to:
140// - MCerPhotEvt
141//
142// Initializes, if empty to MGeomCam::GetNumAreas() for:
143// - MHCalibrationCam::fAverageHiGainAreas
144//
145// Initializes, if empty to MGeomCam::GetNumSectors() for:
146// - MHCalibrationCam::fAverageHiGainSectors
147//
148// Calls MHCalibrationCam::InitHists() for every entry in:
149// - MHCalibrationCam::fHiGainArray
150// - MHCalibrationCam::fAverageHiGainAreas
151// - MHCalibrationCam::fAverageHiGainSectors
152//
153// Sets Titles and Names for the Histograms
154// - MHCalibrationCam::fAverageHiGainAreas
155// - MHCalibrationCam::fAverageHiGainSectors
156//
157Bool_t MHCalibrationTestCam::ReInitHists(MParList *pList)
158{
159
160 MCerPhotEvt *signal = (MCerPhotEvt*)pList->FindObject("MCerPhotEvt");
161 if (!signal)
162 {
163 *fLog << err << "MCerPhotEvt not found... abort." << endl;
164 return kFALSE;
165 }
166
167
168 const Int_t npixels = fGeom->GetNumPixels();
169 const Int_t nsectors = fGeom->GetNumSectors();
170 const Int_t nareas = fGeom->GetNumAreas();
171
172 if (fHiGainArray->GetEntries()==0)
173 {
174 fHiGainArray->Expand(npixels);
175 for (Int_t i=0; i<npixels; i++)
176 {
177 (*fHiGainArray)[i] = new MHCalibrationPix("Calibrated Events",
178 "Test Calibration Pixel");
179
180 MHCalibrationPix &pix = (*this)[i];
181
182 pix.SetNbins(fTestNbins);
183 pix.SetFirst(fTestFirst);
184 pix.SetLast (fTestLast);
185
186 TH1F *h = pix.GetHGausHist();
187
188 h->SetName ("HTestHiGainPix");
189 h->SetTitle("Distribution of calibrated Photons Pixel ");
190 h->SetXTitle("Nr. Photons");
191 h->SetYTitle("Nr. of events");
192
193 InitHists((*this)[i],(*fBadPixels)[i],i);
194 }
195 }
196
197
198 if (fAverageHiGainAreas->GetEntries()==0)
199 {
200 fAverageHiGainAreas->Expand(nareas);
201
202 for (Int_t j=0; j<nareas; j++)
203 {
204 (*fAverageHiGainAreas)[j] =
205 new MHCalibrationPix("MHCalibrationTestAverageArea",
206 "Average Test Calibrations Area Idx ");
207
208 MHCalibrationPix &pix = GetAverageHiGainArea(j);
209
210 pix.SetNbins(fTestNbins*3);
211 pix.SetFirst(fTestFirst);
212 pix.SetLast (fTestLast);
213
214 TH1F *h = pix.GetHGausHist();
215
216 h->SetName ("HTestPix");
217 h->SetTitle("Test Calibrations Area Idx ");
218 h->SetXTitle("Nr. Photons");
219 h->SetYTitle("Nr. of events");
220
221 pix.InitBins();
222 pix.ChangeHistId(j);
223 pix.SetEventFrequency(fPulserFrequency);
224
225 h->SetTitle( Form("%s%s", h->GetTitle()," Runs: "));
226 }
227 }
228
229
230 if (fAverageHiGainSectors->GetEntries()==0)
231 {
232 fAverageHiGainSectors->Expand(nsectors);
233
234 for (Int_t j=0; j<nsectors; j++)
235 {
236 (*fAverageHiGainSectors)[j] =
237 new MHCalibrationPix("MHCalibrationTestAverageSector",
238 "Average Test Calibrations Sector ");
239
240 MHCalibrationPix &pix = GetAverageHiGainSector(j);
241
242 pix.SetNbins(fTestNbins*3);
243 pix.SetFirst(fTestFirst);
244 pix.SetLast (fTestLast);
245
246 TH1F *h = pix.GetHGausHist();
247
248 h->SetName ("HTestPix");
249 h->SetTitle("Test Calibrations Sector ");
250 h->SetXTitle("Nr. Photons");
251 h->SetYTitle("Nr. of events");
252
253 pix.InitBins();
254 pix.ChangeHistId(j);
255 pix.SetEventFrequency(fPulserFrequency);
256
257 h->SetTitle( Form("%s%s", h->GetTitle()," Runs: "));
258 }
259 }
260
261
262 fMeanMeanPhotPerArea.Set(nareas);
263 fRmsMeanPhotPerArea .Set(nareas);
264 fMeanSigmaPhotPerArea.Set(nareas);
265 fRmsSigmaPhotPerArea.Set(nareas);
266
267 SetLoGain(kFALSE);
268
269 return kTRUE;
270}
271
272
273// -------------------------------------------------------------------------------
274//
275// Retrieves pointer to MCerPhotEvt:
276//
277// Retrieves from MGeomCam:
278// - number of pixels
279// - number of pixel areas
280// - number of sectors
281//
282// Fills HiGain histograms (MHGausEvents::FillHistAndArray())
283// with:
284// - MCerPhotPix::GetNumPhotons(pixid);
285//
286Bool_t MHCalibrationTestCam::FillHists(const MParContainer *par, const Stat_t w)
287{
288
289 MCerPhotEvt *calibration = (MCerPhotEvt*)par;
290 if (!calibration)
291 {
292 gLog << err << "No argument in MHCalibrationTestCam::Fill... abort." << endl;
293 return kFALSE;
294 }
295
296 const Int_t npixels = fGeom->GetNumPixels();
297 const Int_t nareas = fGeom->GetNumAreas();
298 const Int_t nsectors = fGeom->GetNumSectors();
299
300 TArrayF sumareahi (nareas);
301 TArrayF sumsectorhi(nsectors);
302 TArrayI numareahi (nareas);
303 TArrayI numsectorhi(nsectors);
304
305 for (Int_t i=0; i<npixels; i++)
306 {
307
308 MHCalibrationPix &histhi = (*this)[i];
309
310 const MCerPhotPix *pix = calibration->GetPixById(i);
311 if (!pix)
312 continue;
313
314
315 const Float_t signal = pix->GetNumPhotons();
316
317 if (signal < 0.0001)
318 continue;
319
320 const Int_t aidx = (*fGeom)[i].GetAidx();
321 const Int_t sector = (*fGeom)[i].GetSector();
322
323 histhi.FillHistAndArray(signal) ;
324
325 sumareahi [aidx] += signal;
326 numareahi [aidx] ++;
327 sumsectorhi[sector] += signal;
328 numsectorhi[sector] ++;
329 }
330
331 for (Int_t j=0; j<nareas; j++)
332 {
333 MHCalibrationPix &histhi = GetAverageHiGainArea(j);
334 histhi.FillHistAndArray(numareahi[j] == 0 ? 0. : sumareahi[j]/numareahi[j]);
335 }
336
337 for (Int_t j=0; j<nsectors; j++)
338 {
339 MHCalibrationPix &histhi = GetAverageHiGainSector(j);
340 histhi.FillHistAndArray(numsectorhi[j] == 0 ? 0. : sumsectorhi[j]/numsectorhi[j]);
341
342 }
343
344 return kTRUE;
345}
346
347// --------------------------------------------------------------------------
348//
349// Calls:
350// - MHCalibrationCam::FitHiGainArrays() with flags:
351// MBadPixelsPix::kTestNotFitted and MBadPixelsPix::kTestOscillating
352//
353Bool_t MHCalibrationTestCam::FinalizeHists()
354{
355
356 *fLog << endl;
357
358 TArrayI numaidx;
359 numaidx.Set(fGeom->GetNumAreas());
360
361 for (Int_t i=0; i<fHiGainArray->GetSize(); i++)
362 {
363
364 MHCalibrationPix &hist = (*this)[i];
365
366 if (hist.IsEmpty())
367 continue;
368
369 if (!hist.FitGaus())
370 if (!hist.RepeatFit())
371 hist.BypassFit();
372
373 hist.CreateFourierSpectrum();
374
375 const Float_t area = (*fGeom)[i].GetA();
376 const Int_t aidx = (*fGeom)[i].GetAidx();
377
378 fMeanMeanPhotPerArea[aidx] += hist.GetMean() / area;
379 fRmsMeanPhotPerArea [aidx] += hist.GetMean() / area * hist.GetMean() / area;
380 fMeanSigmaPhotPerArea[aidx] += hist.GetSigma()/ area;
381 fRmsSigmaPhotPerArea [aidx] += hist.GetSigma()/ area * hist.GetSigma() / area;
382 numaidx[aidx]++;
383 }
384
385
386 for (Int_t j=0; j<fAverageHiGainAreas->GetSize(); j++)
387 {
388
389 MHCalibrationPix &hist = GetAverageHiGainArea(j);
390 if (hist.IsEmpty())
391 continue;
392
393 if (!hist.FitGaus())
394 if (!hist.RepeatFit())
395 hist.BypassFit();
396
397 hist.CreateFourierSpectrum();
398
399 fRmsMeanPhotPerArea [j] -= fMeanMeanPhotPerArea [j]*fMeanMeanPhotPerArea [j]/numaidx[j];
400 fRmsSigmaPhotPerArea[j] -= fMeanSigmaPhotPerArea[j]*fMeanSigmaPhotPerArea[j]/numaidx[j];
401
402 fMeanMeanPhotPerArea [j] /= numaidx[j];
403 fMeanSigmaPhotPerArea[j] /= numaidx[j];
404 fRmsMeanPhotPerArea [j] /= numaidx[j]-1.;
405 fRmsSigmaPhotPerArea [j] /= numaidx[j]-1.;
406
407 if (fRmsMeanPhotPerArea [j] > 0.)
408 fRmsMeanPhotPerArea [j] = TMath::Sqrt(fRmsMeanPhotPerArea [j]);
409 if (fRmsSigmaPhotPerArea [j] > 0.)
410 fRmsSigmaPhotPerArea [j] = TMath::Sqrt(fRmsSigmaPhotPerArea [j]);
411 }
412
413 for (Int_t j=0; j<fAverageHiGainSectors->GetSize(); j++)
414 {
415
416 MHCalibrationPix &hist = GetAverageHiGainSector(j);
417 if (hist.IsEmpty())
418 continue;
419
420 if (!hist.FitGaus())
421 if (!hist.RepeatFit())
422 hist.BypassFit();
423
424 hist.CreateFourierSpectrum();
425 }
426
427 return kTRUE;
428}
429
430
431// --------------------------------------------------------------------------
432//
433// The types are as follows:
434//
435// Fitted values:
436// ==============
437//
438// 0: Fitted Mean Test Calibration (MHGausEvents::GetMean())
439// 1: Error Mean Test Calibration (MHGausEvents::GetMeanErr())
440// 2: Sigma fitted Test Calibration (MHGausEvents::GetSigma())
441// 3: Error Sigma Test Calibration (MHGausEvents::GetSigmaErr())
442//
443// Useful variables derived from the fit results:
444// =============================================
445//
446// 4: Returned probability of Gauss fit (calls: MHGausEvents::GetProb())
447//
448// Localized defects:
449// ==================
450//
451// 5: Gaus fit not OK (calls: MHGausEvents::IsGausFitOK())
452// 6: Fourier spectrum not OK (calls: MHGausEvents::IsFourierSpectrumOK())
453//
454// Converted values:
455// =================
456//
457// 7: Fitted Mean Test Calibration (MHGausEvents::GetMean()) by MGeomPix::GetA()
458// 8: Fitted Mean Error Calibration (MHGausEvents::GetMeanErr()) by MGeomPix::GetA()
459// 9: Fitted Sigma Test Calibration (MHGausEvents::GetSigma()) by MGeomPix::GetA()
460// 10: Fitted Sigma Error Calibration (MHGausEvents::GetSigmaErr()) by MGeomPix::GetA()
461//
462Bool_t MHCalibrationTestCam::GetPixelContent(Double_t &val, Int_t idx, const MGeomCam &cam, Int_t type) const
463{
464
465 if (fHiGainArray->GetSize() <= idx)
466 return kFALSE;
467
468 const MHCalibrationPix &pix = (*this)[idx];
469
470 if (pix.IsEmpty())
471 return kFALSE;
472
473 switch (type)
474 {
475 case 0:
476 val = pix.GetMean();
477 break;
478 case 1:
479 val = pix.GetMeanErr();
480 break;
481 case 2:
482 val = pix.GetSigma();
483 break;
484 case 3:
485 val = pix.GetSigmaErr();
486 break;
487 case 4:
488 val = pix.GetProb();
489 break;
490 case 5:
491 if (!pix.IsGausFitOK())
492 val = 1.;
493 break;
494 case 6:
495 if (!pix.IsFourierSpectrumOK())
496 val = 1.;
497 break;
498 case 7:
499 val = pix.GetMean()/cam[idx].GetA();
500 break;
501 case 8:
502 val = pix.GetMeanErr()/cam[idx].GetA();
503 break;
504 case 9:
505 val = pix.GetSigma()/cam[idx].GetA();
506 break;
507 case 10:
508 val = pix.GetSigmaErr()/cam[idx].GetA();
509 break;
510 default:
511 return kFALSE;
512 }
513 return kTRUE;
514}
515
516// --------------------------------------------------------------------------
517//
518// Calls MHCalibrationPix::DrawClone() for pixel idx
519//
520void MHCalibrationTestCam::DrawPixelContent(Int_t idx) const
521{
522 (*this)[idx].DrawClone();
523}
524
525
526//------------------------------------------------------------
527//
528// For all averaged areas, the fitted sigma is multiplied with the square root of
529// the number involved pixels
530//
531void MHCalibrationTestCam::CalcAverageSigma()
532{
533
534 for (UInt_t j=0; j<fGeom->GetNumAreas(); j++)
535 {
536
537 MHCalibrationPix &hist = GetAverageHiGainArea(j);
538
539 const Float_t numsqr = TMath::Sqrt((Float_t)fAverageAreaNum[j]);
540 fAverageAreaSigma[j] = hist.GetSigma () * numsqr;
541 fAverageAreaSigmaVar[j] = hist.GetSigmaErr () * hist.GetSigmaErr() * numsqr;
542
543 fAverageAreaRelSigma [j] = fAverageAreaSigma[j] / hist.GetMean();
544 fAverageAreaRelSigmaVar[j] = fAverageAreaSigmaVar[j] / (fAverageAreaSigma[j]*fAverageAreaSigma[j]);
545 fAverageAreaRelSigmaVar[j] += hist.GetMeanErr()*hist.GetMeanErr()/hist.GetMean()/hist.GetMean();
546 fAverageAreaRelSigmaVar[j] *= fAverageAreaRelSigma[j];
547 }
548}
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