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Details

• Type: Bug
• Status: To Do
• Resolution: Unresolved
• Fix Version/s: None
• Component/s:
• Labels:
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• Team:

Description

SourceDetectionTask can silently corrupt the provided exposure by fitting and subtracting an invalid background model that that results in the image being all nans. I believe the task should realize that the background model is invalid and raise an exception in this situation.

I first saw the problem with an image that had several hundred counts of background. Detection detected a single source and the results were as described. I have attached code demonstrating the issue. Setup meas_algorithms and run showBackgroundBug.py to see the problem.

Attachments

1. postIsr.fits
19.45 MB
Russell Owen
2. showBackgroundBug.py
2 kB
Russell Owen

People

• Assignee:
Unassigned
Reporter:
Russell Owen
Watchers:
Jim Bosch, John Swinbank, Paul Price, Russell Owen