Bug #1488
ExpCutoff model produces a photon rate exceeded a maximum allowed value
| Status: | Closed | Start date: | 06/29/2015 | |
|---|---|---|---|---|
| Priority: | Normal | Due date: | ||
| Assigned To: |  Knödlseder Jürgen | % Done: | 100% | |
| Category: | - | |||
| Target version: | 1.2.0 | |||
| Duration: |
Description
I use gammalib-0.10.0 and ctools-0.9.0.
Simulating 'ExpCutoff’ spectral model (for both the poin-like and diffuse sources, type=“SpatialMap”), I obtain the following error:
terminate called after throwing an instance of 'GException::invalid_value' what(): *** ERROR in ctobssim::simulate_source(GCTAObservation*, GModels&, GRan&, GLog*): Invalid value. Photon rate 2.98098e+25 photons/sec for model "test point source" exceeds maximum allowed photon rate of 1e+06 photons/sec. Please check the model parameters for model "test point source" or increase the value of the hidden "maxrate" parameter. Aborted (core dumped)
Spectral model is the following:
<spectrum type="ExpCutoff"> <parameter name="Prefactor" scale="1e-16" value="1.0" min="1e-03" max="1000.0" free="1"/> <parameter name="Index" scale="-1" value="2.5" min="0.0" max="+5.0" free="1"/> <parameter name="Cutoff" scale="1e6" value="1.0" min="0.01" max="1000.0" free="1"/> <parameter name="Scale" scale="1e6" value="0.3" min="0.01" max="1000.0" free="0"/> </spectrum>
test.xml 
- spectral model used in simulations
(1.44 KB)
VelaX.fits - spatial map of Vela X diffuse emission (45 KB)
Recurrence
No recurrence.
History
#1
Updated by Knödlseder Jürgen almost 9 years ago
- Assigned To set to Knödlseder Jürgen
Can you post the full XML model and also the ctobssim parameters so that I can reproduce the problem?
#2
Updated by Burtovoi Aleksandr almost 9 years ago
- File test.xml added
- File VelaX.fits added
The spectral model is attached in test.xml.
I performed simulations for both point source and diffuse source (VelaX.fits spatial map is attached).
I used standard prod2-South_50h IRF.
Other ctobssim parameters are the following:
$ ctobssim RA of pointing (degrees) (0-360) [128.75] Dec of pointing (degrees) (-90-90) [-45.6] Radius of FOV (degrees) (0-180) [3.5] Start time (MET in s) [0.0] End time (MET in s) [191160] Lower energy limit (TeV) [0.1] Upper energy limit (TeV) [100.0] Calibration database [prod2] Instrument response function [South_50h] Model [test.xml]
#3
Updated by Knödlseder Jürgen over 7 years ago
- Target version set to 1.2.0
#4
Updated by Knödlseder Jürgen about 7 years ago
- Status changed from New to Feedback
- % Done changed from 0 to 100
I run ctobssim on the test data and with the current code in devel there seems to be no problem. For the record, here the output in the log file:
2017-02-26T19:40:39: +======================+ 2017-02-26T19:40:39: | Simulate observation | 2017-02-26T19:40:39: +======================+ 2017-02-26T19:40:39: === CTA observation === 2017-02-26T19:40:39: Simulation cone ...........: RA=128.75 deg, Dec=-45.6 deg, radius=4 deg 2017-02-26T19:40:39: Time interval .............: 0 - 191160 s 2017-02-26T19:40:39: Photon energy range .......: 100 GeV - 199.526231496888 GeV 2017-02-26T19:40:39: Event energy range ........: 100 GeV - 199.526231496888 GeV 2017-02-26T19:40:39: Simulation area ..........: 5.07673e+09 cm2 2017-02-26T19:40:39: Use model ................: _2FGLJ0835.3-4510 2017-02-26T19:40:39: Normalization ............: 1 [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: Flux .....................: 1.50079e-11 [_2FGLJ0835.3-4510] photons/cm2/s 2017-02-26T19:40:39: Normalized flux ..........: 1.50079e-11 [_2FGLJ0835.3-4510] photons/cm2/s 2017-02-26T19:40:39: Photon rate ..............: 0.076191 photons/s [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: MC source photons ........: 14566 [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: MC source events .........: 5019 [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: MC source events .........: 5019 (all source models) 2017-02-26T19:40:39: Photon energy range .......: 199.526231496888 GeV - 398.107170553497 GeV 2017-02-26T19:40:39: Event energy range ........: 199.526231496888 GeV - 398.107170553497 GeV 2017-02-26T19:40:39: Simulation area ..........: 7.90186e+09 cm2 2017-02-26T19:40:39: Use model ................: _2FGLJ0835.3-4510 2017-02-26T19:40:39: Normalization ............: 1 [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: Flux .....................: 1.12705e-11 [_2FGLJ0835.3-4510] photons/cm2/s 2017-02-26T19:40:39: Normalized flux ..........: 1.12705e-11 [_2FGLJ0835.3-4510] photons/cm2/s 2017-02-26T19:40:39: Photon rate ..............: 0.089058 photons/s [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: MC source photons ........: 17198 [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: MC source events .........: 6368 [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: MC source events .........: 6368 (all source models) 2017-02-26T19:40:39: Photon energy range .......: 398.107170553497 GeV - 794.328234724282 GeV 2017-02-26T19:40:39: Event energy range ........: 398.107170553497 GeV - 794.328234724282 GeV 2017-02-26T19:40:39: Simulation area ..........: 1.42113e+10 cm2 2017-02-26T19:40:39: Use model ................: _2FGLJ0835.3-4510 2017-02-26T19:40:39: Normalization ............: 1 [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: Flux .....................: 8.3795e-12 [_2FGLJ0835.3-4510] photons/cm2/s 2017-02-26T19:40:39: Normalized flux ..........: 8.3795e-12 [_2FGLJ0835.3-4510] photons/cm2/s 2017-02-26T19:40:39: Photon rate ..............: 0.119083 photons/s [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: MC source photons ........: 22663 [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: MC source events .........: 7730 [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: MC source events .........: 7730 (all source models) 2017-02-26T19:40:39: Photon energy range .......: 794.328234724282 GeV - 1.58489319246111 TeV 2017-02-26T19:40:39: Event energy range ........: 794.328234724282 GeV - 1.58489319246111 TeV 2017-02-26T19:40:39: Simulation area ..........: 2.52128e+10 cm2 2017-02-26T19:40:39: Use model ................: _2FGLJ0835.3-4510 2017-02-26T19:40:39: Normalization ............: 1 [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: Flux .....................: 6.10702e-12 [_2FGLJ0835.3-4510] photons/cm2/s 2017-02-26T19:40:39: Normalized flux ..........: 6.10702e-12 [_2FGLJ0835.3-4510] photons/cm2/s 2017-02-26T19:40:39: Photon rate ..............: 0.153975 photons/s [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: MC source photons ........: 29705 [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: MC source events .........: 10617 [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: MC source events .........: 10617 (all source models) 2017-02-26T19:40:39: Photon energy range .......: 1.58489319246111 TeV - 3.16227766016838 TeV 2017-02-26T19:40:39: Event energy range ........: 1.58489319246111 TeV - 3.16227766016838 TeV 2017-02-26T19:40:39: Simulation area ..........: 3.90561e+10 cm2 2017-02-26T19:40:39: Use model ................: _2FGLJ0835.3-4510 2017-02-26T19:40:39: Normalization ............: 1 [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: Flux .....................: 4.27777e-12 [_2FGLJ0835.3-4510] photons/cm2/s 2017-02-26T19:40:39: Normalized flux ..........: 4.27777e-12 [_2FGLJ0835.3-4510] photons/cm2/s 2017-02-26T19:40:39: Photon rate ..............: 0.167073 photons/s [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: MC source photons ........: 31963 [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: MC source events .........: 12028 [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: MC source events .........: 12028 (all source models) 2017-02-26T19:40:39: Photon energy range .......: 3.16227766016838 TeV - 6.30957344480193 TeV 2017-02-26T19:40:39: Event energy range ........: 3.16227766016838 TeV - 6.30957344480193 TeV 2017-02-26T19:40:39: Simulation area ..........: 5.86488e+10 cm2 2017-02-26T19:40:39: Use model ................: _2FGLJ0835.3-4510 2017-02-26T19:40:39: Normalization ............: 1 [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: Flux .....................: 2.77004e-12 [_2FGLJ0835.3-4510] photons/cm2/s 2017-02-26T19:40:39: Normalized flux ..........: 2.77004e-12 [_2FGLJ0835.3-4510] photons/cm2/s 2017-02-26T19:40:39: Photon rate ..............: 0.16246 photons/s [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: MC source photons ........: 31047 [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: MC source events .........: 11880 [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: MC source events .........: 11880 (all source models) 2017-02-26T19:40:39: Photon energy range .......: 6.30957344480193 TeV - 12.5892541179417 TeV 2017-02-26T19:40:39: Event energy range ........: 6.30957344480193 TeV - 12.5892541179417 TeV 2017-02-26T19:40:39: Simulation area ..........: 7.79872e+10 cm2 2017-02-26T19:40:39: Use model ................: _2FGLJ0835.3-4510 2017-02-26T19:40:39: Normalization ............: 1 [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: Flux .....................: 1.53688e-12 [_2FGLJ0835.3-4510] photons/cm2/s 2017-02-26T19:40:39: Normalized flux ..........: 1.53688e-12 [_2FGLJ0835.3-4510] photons/cm2/s 2017-02-26T19:40:39: Photon rate ..............: 0.119857 photons/s [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: MC source photons ........: 22788 [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: MC source events .........: 9471 [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: MC source events .........: 9471 (all source models) 2017-02-26T19:40:39: Photon energy range .......: 12.5892541179417 TeV - 25.1188643150958 TeV 2017-02-26T19:40:39: Event energy range ........: 12.5892541179417 TeV - 25.1188643150958 TeV 2017-02-26T19:40:39: Simulation area ..........: 8.03724e+10 cm2 2017-02-26T19:40:39: Use model ................: _2FGLJ0835.3-4510 2017-02-26T19:40:39: Normalization ............: 1 [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: Flux .....................: 6.31757e-13 [_2FGLJ0835.3-4510] photons/cm2/s 2017-02-26T19:40:39: Normalized flux ..........: 6.31757e-13 [_2FGLJ0835.3-4510] photons/cm2/s 2017-02-26T19:40:39: Photon rate ..............: 0.0507759 photons/s [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: MC source photons ........: 9701 [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: MC source events .........: 4511 [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: MC source events .........: 4511 (all source models) 2017-02-26T19:40:39: Photon energy range .......: 25.1188643150958 TeV - 50.1187233627271 TeV 2017-02-26T19:40:39: Event energy range ........: 25.1188643150958 TeV - 50.1187233627271 TeV 2017-02-26T19:40:39: Simulation area ..........: 8.13586e+10 cm2 2017-02-26T19:40:39: Use model ................: _2FGLJ0835.3-4510 2017-02-26T19:40:39: Normalization ............: 1 [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: Flux .....................: 1.47142e-13 [_2FGLJ0835.3-4510] photons/cm2/s 2017-02-26T19:40:39: Normalized flux ..........: 1.47142e-13 [_2FGLJ0835.3-4510] photons/cm2/s 2017-02-26T19:40:39: Photon rate ..............: 0.0119713 photons/s [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: MC source photons ........: 2284 [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: MC source events .........: 1051 [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: MC source events .........: 1051 (all source models) 2017-02-26T19:40:39: Photon energy range .......: 50.1187233627271 TeV - 100 TeV 2017-02-26T19:40:39: Event energy range ........: 50.1187233627271 TeV - 100 TeV 2017-02-26T19:40:39: Simulation area ..........: 8.13586e+10 cm2 2017-02-26T19:40:39: Use model ................: _2FGLJ0835.3-4510 2017-02-26T19:40:39: Normalization ............: 1 [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: Flux .....................: 1.2087e-14 [_2FGLJ0835.3-4510] photons/cm2/s 2017-02-26T19:40:39: Normalized flux ..........: 1.2087e-14 [_2FGLJ0835.3-4510] photons/cm2/s 2017-02-26T19:40:39: Photon rate ..............: 0.000983383 photons/s [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: MC source photons ........: 173 [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: MC source events .........: 93 [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: MC source events .........: 93 (all source models) 2017-02-26T19:40:39: MC source photons .........: 182088 [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: MC source events ..........: 68768 [_2FGLJ0835.3-4510] 2017-02-26T19:40:39: MC events .................: 68768 (all models)
#5
Updated by Knödlseder Jürgen about 7 years ago
- Status changed from Feedback to Closed