rcal-846 Add mosaic info to the science products RTD page

[ddavis-stsci]

Resolves RCAL-846

Closes #1252

This PR adds a description of the i2d (mosaic) data to read-the-docs.

Checklist

• added entry in CHANGES.rst under the corresponding subsection
• [N/A] updated relevant tests
• updated relevant documentation
• updated relevant milestone(s)
• added relevant label(s)
• [N/A] ran regression tests, post a link to the Jenkins job below. How to run regression tests on a PR

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.85%. Comparing base (1aec135) to head (51ba23b).
Report is 5 commits behind head on main.

❗ Current head 51ba23b differs from pull request most recent head 7bf99f1

Please upload reports for the commit 7bf99f1 to get more accurate results.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1262      +/-   ##
==========================================
- Coverage   78.93%   78.85%   -0.09%     
==========================================
  Files         117      117              
  Lines        8086     8088       +2     
==========================================
- Hits         6383     6378       -5     
- Misses       1703     1710       +7     

Flag	Coverage Δ		*Carryforward flag
nightly	62.84% <ø> (+0.06%)	⬆️	Carriedforward from 1aec135

*This pull request uses carry forward flags. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[schlafly]

Looks good to me, though I left a comment inline with some questions about some of the fields in the i2d files...

[schlafly]

Did you check the units here? The flux calibration step is supposed to make sure the units are MJy/sr (or the square of that for the variances), but we may have errors, of course. I had understood the context image to be N x nrows x ncols, where N depends on the number of input images, and is 1 for sky cells with fewer than 32 input images. Not true?

[ddavis-stsci]

I must have looked at an old file. I've updated the units.

for the number of planes in the context image I thought as you said, it should be the number of input images modulo 32. In the output I see
context (NDArrayType): shape=(2, 9191, 8642), dtype=uint32 # Context Data
The number of input images was 8 (not all overlapping).
Maybe a bug?

[schlafly]

Was this the number of input SCAs or exposures? If the latter, maybe the number of SCAs is >32, and this is the fact that we're not grouping? But yeah, I suspect a bug of some kind.

[ddavis-stsci]

8 detectors, the asn code looks for individual detector files that touch a skycell. In this case WFI01, WFI02, WFI10 & WFI11 for the given visit and skycell.

…

On 6/3/24 4:52 PM, Eddie Schlafly wrote: Was this the number of input SCAs or exposures? If the latter, maybe the number of SCAs is >32, and this is the fact that we're not grouping? But yeah, I suspect a bug of some kind. — Reply to this email directly, view it on GitHub <https://urldefense.com/v3/__https://github.com/spacetelescope/romancal/pull/1262*issuecomment-2146101116__;Iw!!CrWY41Z8OgsX0i-WU-0LuAcUu2o!2kc26SIo1VJ3lgqZNjJX5H3ZHyHD6Xv_9J-jX5Ljo-yT2FSzotAFclSfeuEV_9oigEirfuG8-zR9G9lRZVZSNNB8$>, or unsubscribe <https://urldefense.com/v3/__https://github.com/notifications/unsubscribe-auth/ALXCXWL2QWP2WYNSJHLYNLDZFTJPBAVCNFSM6AAAAABIXECV5SVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDCNBWGEYDCMJRGY__;!!CrWY41Z8OgsX0i-WU-0LuAcUu2o!2kc26SIo1VJ3lgqZNjJX5H3ZHyHD6Xv_9J-jX5Ljo-yT2FSzotAFclSfeuEV_9oigEirfuG8-zR9G9lRZVGoEwuJ$>. You are receiving this because you authored the thread.Message ID: ***@***.***>

[schlafly]

Weird, thanks. Let's file a ticket to investigate the number of planes to expect, but looks good to me.