XMM-Newton Science Analysis System


omsrclistcomb (omsrclistcomb-2.22) [xmmsas_20141104_1833-14.0.0]

Meta Index / Home Page / Notes on the Source / QUALITY FLAGS

Notes on individual quality 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.

Notes

1. QFLAG The quality flag for each source in each filter obtained from the input source-lists.

2. QFLAG_COMB The quality flag for each source in each filter obtained using the combined source-list.