Bug #1447
Fit errors too large
| Status: | Closed | Start date: | 03/18/2015 | |
|---|---|---|---|---|
| Priority: | Normal | Due date: | ||
| Assigned To: | - | % Done: | 0% | |
| Category: | - | |||
| Target version: | 1.0.0 | |||
| Duration: |
Description
When simulating and fitting the Crab for different spatial and spectral models, the errors often seem too large. Particularly when parameters are correlated. This therefore seems to be another manifestation of Issue #1060 https://cta-redmine.irap.omp.eu/issues/1060.
One example:
(I attach the script I am running)
Input:
crab_spatial = gl.GModelSpatialEllipticalDisk(crabdir,0.025,0.015,90.)
crab_spectrum = gl.GModelSpectralLogParabola(3.2e-17,-2.47,gl.GEnergy(1,“TeV"),-0.24)
Output:
Recurrence
No recurrence.
Related issues
History
#1
Updated by Buehler Rolf almost 10 years ago
When I use simpler models (Pointsource / Powerlaw) the errors seem fine.
#2
Updated by Mayer Michael over 9 years ago
Hi Rolf, could you try to more constrain the parameter ranges?
#3
Updated by Knödlseder Jürgen over 9 years ago
- Target version set to 1.0.0
#4
Updated by Knödlseder Jürgen over 9 years ago
Rolf, can this issue be closed now or is there still an issue?
#5
Updated by Buehler Rolf over 9 years ago
Yes, this can be closed. The flux was not being simulated correctly due to the problem reported in GammaLib Issue #1492
#6
Updated by Knödlseder Jürgen over 9 years ago
- Status changed from New to Closed