Changes between Version 80 and Version 81 of Background_Dark_Model

Timestamp:

May 28, 2012, 10:05:22 AM (14 years ago)

Author:

watersc1

Comment:

--

Background_Dark_Model

@@ -12 +12 @@
 This test included everything in Test #21, but included the new static masks that were created to attempt to minimize the effect of static crosstalk issues.  After creating these masks, I realized that those areas should more properly be masked with a SUSPECT bit instead of the DETECTOR bit.  These regions are not really as bad as the defects removed with the DETECTOR mask, but we should be aware that detections in these areas are not as reliable as those in other areas.  This mask change increased the static masking by ~4%, which is larger than I expected to happen.  Because of this loss of area, we lose a large number of probable real sources (comparing the number of all N=12 objects shows a ~5% loss rate consistent with this area change).
 
-Looking at the ghost comparison map, it appears that a large number of ghosts are present in this reduction.  This reduction used the new reference catalog, suggesting that there might still be issues with the bright stars.  This explains why the number of 5-sigma single detections is increased relative to Test #21.
+Looking at the ghost comparison map, it appears that a large number of ghosts are present in this reduction.  This reduction used the new reference catalog, suggesting that there might still be issues with the bright stars (or a problem in the ghost threshold). This explains why the number of 5-sigma single detections is increased relative to Test #21.
 
 == May 21, 2012 ==