= Fixing Problems with Daily Reductions =
Please try these things only if you know what you are doing.  It takes considerable effort to recover the WSO daily reductions when they proceed out of order or need to be redone.

== Quick Summary of WSO Data Reduction Process ==

 . Data files for each observation are transferred daily by the WSO Shutdown program to /data/scans/rawdata/transfer
 . Analysis must be done in order day by day using '''~wso/src/reductions/WTelred'''.  Use '''/home/wso/scripts/checkwso''' to see which files are available.
 . If things get done out of order then the final data sets must be altered to remove the offending data and the reductions then re-run in proper order. This is tedious and requires care.
 . 
  . Meanfld's are appended daily to ''/wso/scans/mf/rawmf''
   . At month end the MFs are evaluated using '''~wso/src/reductions/MF.monthly''' and good ones ultimately added individually to ''mf.ds'' and daily averages in ''mf''.
  . Magscans are put into ''/wso/scans/level0/sn#### aux0/sn####'' and ''ns0/sn####'' and appended to ''level1, level1.aux'', and ''level1.ns''.
   . After immediate evaluation and trouble bit setting using '''settrouble''', a call to '''Dolev3''' extends ''/wso/scans/level3'' and updates daily synoptic maps and coefficients in ''/anonftp/wso'' and files on the WSO web site in ''/web/wso/htdocs''
   . Monthly evaluation is done before making final synoptic maps and daily plots for SGD

== WSO Daily Reduction Fixes ==
==== Fixing Magnetograms ====
 . '''WRedoMAG''' 
  . '''WRedoMAG''' requires 3 parameters giving the Day, Serial_number, and Filename.  There is an optional 4th parameter, "-a"   The output of the program will be captured and added to a reduction script at /data/scans/reduction.scripts/YYYY_Day.MAGredo.script
  . '''WRedoMAG''' re-reduces magnetogram Serial_number that has already been reduced.  Data are found in the directory /data/scans/reduced/Day in the file Filename 
  . Example: ''WRedoMAG Oct28 9906 1028:1755_MG01'' redoes the reduction of magnetogram 9906 found on /data/scans/reduced/Oct28/1028:1755_MG01
 . '''WRedoMag.timefix2''' does the same, but does not automatically capture a record of the reduction script.

==== Fixing Level 3 Remapped Magnetograms ====
 . '''pokel3'''
  . '''pokel3''' sets values in a single level 3 magnetogram to missing in a rectangle specified by xmin, xmax, ymin, & ymax
 . '''pokel3_runs'''
  . '''pokel3_runs''' is a script that calls pokel3 to set to missing a range of values in a particular level 3 re-mapped magnetogram to eliminate bad pixels.  It is generally used when a partial magnetogram must be included in the synoptic chart, but the interpolation/extrapolation fails leaving bad values in the level 3 magnetogram.  '''pokel3_runs''' has a record of all adjusted level 3 magnetogram pixels since it was started in 1992 to keep a record of corrected scans.  New lines are added when needed and lines already run are commented out of the script.
   - x is 0 at right edge; y is 0 at bottom of print3
   - x is 22 at left edge; y is 29 at top   of print3
  . 
 . '''print3 -n sn=SN''' will provide a print-out and some information about a level 3 magnetogram
 . '''plotl3''' SN (in ~wso/scans/scripts) will make a plot of level 3 magnetogram SN.

==== Fixing Meanfield Reductions ====
 . '''WRedoMF'''
  . '''WRedoMF''' requires 2 arguments, the DAY and the MFNUMBER of the first target Meanfield.
  . '''WRedoMF''' re-reduces all of the MF's in the appropriate directory in the same order as usual, but instead of adding to the end of rawmf.ds, it starts with the specified MFNUMBER.  It searches first for files in /data/scans/rawdata/DAY and if that directory does not exist it looks in /data/scans/reduced/DAY.  It does not make a record of the re-reduction, but it should.
  . Example: ''WRedoMF Oct28 67062'' would redo the MF reduction for the MF files in /data/scans/reduced/Oct28 starting with 67062.


----
Return to [[WSOReductions|WSO Reductions]]