Steps for masking

== Generation of the automasks ==

First, process 100 i band 3pis using DEFAULT_DARKTEST as the reduction.  Then run the following ppMerge:  

ppMerge dark.XY02.mdc dark.XY02 -recipe PPMERGE PPMERGE_FLAT -Db VARIANCES F -Di ITER 3 -Df FRACLOW 0.0 -Df FRACHIGH 0.0 -D COMBINE MEDIAN -type flat'  

dark.XY02.mdc looks like this: 

rawImfile MULTI

rawImfile  METADATA  
    IMAGE       STR    neb://ipp005.0/gpc1/darktest.20101213/o5367g0082o.184503/o5367g0082o.184503.ch.168800.XY02.fits
END

(but with all 100 images)

Then, when ppMerge finishes, run 'makemasks.pl' from ~heather/staticmask. This has various cuts based on the median stddev, sigma stddev and %images used, and uses a kernel to reject bad pixels that do not also have bad neighbors.   

== Combining the automask with cte, dark, flat masks ==

go.maskmerge merges together the cte,dark, flat, and automask for each chip.

== Masking ==

same as before, use 'fixmask XY??' to mask a chip, 'fixmask XY?? xy??' to start masking at a certain cell.

== Merging/culling cells that were masked twice ==

When masking, it is possible to exit out and restart a cell. This leads to duplicate cell entries in the static mask. 'fix.single.test XY??' will take the latest cell in a mask as the correct one, as well as find masks that are inconsistent.  

== Special Chips == 

While masking, we discovered that the old CTE mask was not valid for certain chips. Chris generated a new CTE mask, and I removed the old CTE mask and added the new CTE mask to the manual masks.

XY11 -- Because of CTE issues, had not been masked yet.

XY14 -- required the new dark as well. This is the only chip with the new dark (the old dark was masking the first and 3rd column)

== Camera Changes ==

Changes (since the previous mask)

2010-02-28    OTA14 improves
2010-07-23    OTA11 improves (possibly before, this was the date it was noticed)
2010-09-12    "camera voltage change"
2010-09-27    bathtub rings visible in phase 2 devices

For this mask (2010-12-15) I chose a start date of 07-23-2010

== ingesting the chips ==

see /data/ipp004.0/gpc1/detrend/gpcmask.20101215/register.mask.20101215.sh for the script