https://pfspipe.ipmu.jp/jira This file is an XML representation of an issue en-us 8.3.4 803005 13-09-2019 https://pfspipe.ipmu.jp/jira/browse/PIPE2D-1253 DRP 2-D Pipeline <p>Some of FLUXSTD have low S/N for their PSF flux. Here is a plot for visit=92557.<br/> <span class="image-wrap" style=""><img src="https://pfspipe.ipmu.jp/jira/secure/attachment/16147/16147_image+%281%29.png" style="border: 0px solid black" /></span></p> <p> </p> <p><font color="#1d1c1d">If I separate the upper/lower half of this broad correlation and plot the (RA,Dec) distribution of FLUXSTD, I got this figure. The red points are the lower half (i.e., FLUXSTDs with low S/N for their brightness). The cobra positioning accuracy was not great at the field edge and I am likely looking at that effect. But, I will look at the raster data to make sure if things are consistent.</font><span class="image-wrap" style=""><img src="https://pfspipe.ipmu.jp/jira/secure/attachment/16148/16148_image+%282%29.png" style="border: 0px solid black" /></span></p> PIPE2D-1253

Low S/N for bright FLUXSTD

Task Normal Done Done Masayuki Tanaka Masayuki Tanaka Wed, 12 Jul 2023 04:07:24 +0000 Fri, 28 Jul 2023 07:01:54 +0000 Fri, 28 Jul 2023 07:01:54 +0000 0 1 <p>This fig is based on a raster scan with with=93357 - 93364 (i.e., different visits from the plots above because they do not have a raster scan). Bluer colors mean more flux loss. The flux loss is very naively defined as the ratio between the flux at the center and the maximum flux during the raster sequence. The overall trend is similar to the plot above and the low S/N FLUXSTD is likely due to the suboptimal cobra positions at the field edge.</p> <p><span class="image-wrap" style=""><img src="https://pfspipe.ipmu.jp/jira/secure/attachment/16201/16201_image-2023-07-28-16-00-49-039.png" style="border: 0px solid black" /></span></p> Relates PIPE2D-1251 Development Rank 0|zzsyov: