Firefly-1974: support Rubin v2 mask header format

[robyww]

Firefly-1974: support rubin v2 mask header format

Support mask in the FITS header form

MSKN0001= 'BAD     '
MSKM0001=        1
MSKD0001= 'Bad pixel in the instrument, including bad amplifiers.'
MSKN0002= 'COSMIC_RAY'
MSKM0002=        2 
MSKD0002= 'A cosmic ray affected this pixel.'                             
etc

Testing

• https://fireflydev.ipac.caltech.edu/firefly-1974-mask/firefly
• using the upload panel try both old and new FITS
  • http://web.ipac.caltech.edu/staff/roby/mask/NEW_MASK_future_visit_image.fits
  • http://web.ipac.caltech.edu/staff/roby/mask/calexp_HSC_i_HSC-I_1228_0_38_HSC_runs_RC2_w_2021_14_DM-29519_sfm.fits

How to show mask

• upload the image from the url and then choose only the first HDU, the choose load image
• go to the drawing layers and click enable to show the mask layers
• enable some or all of the layers
• The new mask format allows for a description of the mask that will show up in the layer

[lrebull]

nice! this is really cool. (when can we get it this nice for spherex? i'm betting they'd have to make changes to their data which will be ...tough.)

[kpuriIpac]

Looks great! One small typo bug I found in code that I pointed out below.

One pre-existing bug I found, that may be easy to fix here:

• I accidentally went to Tools -> Layers -> Add Mask to Image
• do this (for either one of the fits files) and you'll see a console error, then go to Drawing Layers -> you may see something like bit # 1 - loading, turn this off and it stays turned off with the console error.
• I think fix is simple in OverlayPlotView.js: plot.cubeCtx?.cubePlane (line 72)