• SynopticChartReductions

Making MDI Magnetic Field Synoptic Charts

DESCRIPTION:

The magnetic and intensity Carrington Rotation synoptic charts are generated as soon as the definitive MDI data are processed for the period. They require 3 (or 4?) days of data after the nominal end of the CR.

INSTRUCTIONS: To make the magnetic field charts:

1. On your own machine (for speed), cd /synoptic/new_scripts/synop_qual.

2. Run new_cr [CR] for the new Carrington Rotation. You can also run new_cr_noscale to highlight mostly one-pixel cosmic ray effects.
   • The magnetograms for the entire CR (plus a few days after) will pop up in DS9 for you to look at.

   • To set the Cosmic Ray bits edit the file CR####.####-#### where the numbers are the CR, and the first and the last day. Indicate in the file the day and image numbers for which the bit must be set. When finished, run the file and save it in the directory CR.BitsSet.Lists NoteOnCosmicRays

   • If any other trouble bits need to be set, run 'udpate' in a sonar window. It will prompt you for the day and image numbers, and the quality bit(s) you want to set. Quality bit definitions are at http://soi.stanford.edu/production/QUALITY/.

3. Once quality bits are set, run 'make_magsynop.pl [CR] [FIRST] [LAST] on n02 in the directory /synoptic/new_scripts

   • Here CR is the Carrington Rotation and FIRST and LAST are the beginning and end times of the CR. There is an alias called 'carrot' (run on sonar) that will get those times for you:

     • alias carrot "echo \!* > /tmp/cr;echo \!*;~kehcheng/work/synop/carrot < /tmp/cr"

       • sonar.Stanford.EDU: carrot 2067
         • 2067
         • T_FIRST = 2008.02.21_17:34:00_TAI 982690440.315253 5529.73
         • T_ROT = 2008.03.06_09:44:30_TAI 983871870.041679 5543.41
         • T_LAST = 2008.03.20_01:40:33_TAI 985052432.670730 5557.07
         • T_EARTH = 2008.03.06_09:31:46_TAI 983871105.862488
   • So to make the synoptic charts for CR 2067, on n02 run make_magsynop.pl 2067 5529.73 5557.07.
   • make_magsynop.pl puts the new files in /synoptic/carrot/M/[CR]
     • You can ignore the error messages about not being able to read the overview.fits files.
     • Missing magnetograms also generate a complaint
     This takes roughly 15 minutes to run.
4. Make the gif images for the fits files that were created by make_magsynop.pl.
   • Run /ssw/gen/setup/ssw_idl on your machine. Then

     • IDL> .run /synoptic/new_scripts/plot_synop

     • IDL> .run /synoptic/new_scripts/synop_gif_loop

   • To make each of the 0, 15 E/W, 30 E/W, 45 E/W, and 60 E/W gif files for both line of sight and radial, do

     • IDL> synop_gif_loop,####,####

   • this calls plot_synop for each set of parameters, e.g. plot_synop in='/synoptic/carrot/M/1909/synop_Ml_30W.1909.fits',/gif,/next,/carrot

     • IDL> exit

5. Check the images to make sure they look OK. You may need to set additional trouble bits if it looks like a bad image was used, and rerun make_magsynop.pl and remake the gif images. You can check the files online at

   • http://soi.stanford.edu/magnetic/index6.html

6. Update the file /synoptic/carrot/latest to reflect the latest CR that's available when you have updated the charts.