IPP Progress Report for the week 2009.10.05 - 2009.10.09

(Up to IPP Progress Reports)

Eugene Magnier

Heather Flewelling

• continued md5sum checking of raw images, repaired a total of 182 images to date. More scripts written to make this easier to manage.
• started to fill md5sums into the gpc1 database. waiting on 3 hosts to finish checks to continue the rest (then I will fill the gaps which are missing because of NFS errors, nebulous errors, or unresolved because of inconsistent md5sums)
• helped Natalia get started with IPP software and dvo
• processed MD01.20091007 and MD02.20091007 through to magic
• processed SVS.20091005
• finished processing MD10.20090925
• destreaked MD09.20090925 and M31.20090925

Bill Giebink

Paul Price

• MD08 stack processing
  • Low rate of failures: 0/19680 chip, 1/329 camera, 3/34403 warp, 15/3912 stack
  • Tested a few following Gene's merge: no problem
• Organising UK tour
• Stacking (branches/pap)
  • Produce non-convolved stack using convolved stack's rejection mask
  • Works, ready for merge

Bill Sweeney

Chris Waters

• Cleanup: Ran cleanup on chip, warp, stack, and diff stages for a large list of old labels. This freed up 33 TB, or about 4% of the total cluster disk space. Updated and corrected bugs in ippTools and ipp_cleanup.pl to properly handle the cleanup of old data. Checked why certain labels do not clean successfully, and discovered that the majority are due to Nebulous issues (to be resolved next week).

• Fringe: Investigated the way the fringe scale is calculated by looking at the samples. Switched to one background sample per cell (down from 9) and saw some improvement. Checking the chips that still do not scale correctly indicates that the samples that should be influencing the fit are being clipped as outliers. Rewriting this clipping should correctly scale the fringes.

• Flat: Constructed remaining flat-verify runs for domeflats. The residual patterns likely correlate with dome screen tension (and do not correlate with anything other than date). Processed skyflat exposures with the domeflat, revealing a static pattern (due to the screen tension pattern not being averaged out). Working on constructing a skyflat for comparison.