WFI Weekly & Daily Health Check Instructions
		HOME INDEX SEARCH HELP NEWS

Description

This page contains instructions on how to run the Weekly Health Check at the 2p2

Instructions

On the oh machine, in Service account:

• Start up jp2pp with the userid=51021
• Run the OB: WFI_Weekly_Health_Check
  This will generate 25 images (5 Bias and 20 Beta-light images).
• or with the OT select in the Calibration Queue the WFI_Weekly_Health_check OB.

On the off machine as user astro:

• On /data/reduced/Monthly_Health_Check/ do a export PATH=$PATH:/home/astro/scripts
  
• Then run the script: renameMHC.py yyyy-mm-dd First Dark # + First Image #
  This will create a symbolic link for each image for input into the midas batch
• At the astro home dir. start MIDAS inmidas -p 66 , once inside midas cd /data/reduced/Monthly_Health_Check
• set the context: set/con wfi
• Run the script: @@ WFIfits2bdf 1 25
  This will create the catalogues needed to reduce the data
• Run the script: @@ ccd_standard_test 5n YYMMDD ccd5n_ norm 25
  where 5n corresponds to the number of the ccd (i.e. 50 to 57).
  Note1: This means that you have to run this script 8 times!
  Note2: It is VERY important to use the date format YYMMDD. You will encounter many problems if you do not (e.g. 20 September 2001 = 010920)
  Note3: If you need to re-run the test, first give the command: > rm *5n YYMMDD* to remove the created by ccd_standard_test (otherwise they are not re-created)
• Check that the graphs are reasonable and the summary is printed on the 2p2 printer. If so:
• Run the script: MHC2epu + yymmdd + epu password

This sends the appropriate data to the t2p2web account on epu and puts it in the directories: ~t2p2web/2p2T/CCDs/5n/Data_ST/

On epu as user t2p2web:

• Run the script to update the web pages: updateMHC WFI

• Check the output for each chip paying particular attention to:
  1.- Is the Bias level within 2 sigmas ?
  2.- Is the intensity level of the last point following the line from the previous points ?
  3.- Is the gain within 2 sigmas ?
  4.- Is the RON within 2 sigmas ?
  5.- Is the shutter error within 2 sigmas ?
  6.- Is the linearity error OK ?
  If the answer to any of the above questions is NO, run the test again next day.
  
  Notice that the Beta Light output light depends on temperature ~ -0.3% / °C. So you would expect some variation in intensity if the test was done at too extreme temperature.
  
  

Send comments to <ls-220@eso.org> Last update: June 15th. 2003