XMM-Newton Science Analysis System


omdetect (omdetect-5.41) [xmmsas_20230412_1735-21.0.0]

Notes on individual flags

1. Bad Pixels A point-source will have this flag set if any pixel within the photometry aperture, or any within the background annulus, has a corresponding pixel in the quality image with a non-zero value. Similarly, an extended source will have this flag set if any corrsponding pixel in the quality image has a non-zero value. The quality image was added to the image file by omcosflag, and a “bad” pixel may either be a damaged or dead one.
2. Weird source Indicates that the source has an isolated extremely bright pixel.