Update handling of background subtraction steps for MIRI MRS

[stscijgbot-jp]

Issue JP-3010 was created on JIRA by David Law:

Now that there has been some time to study and work with assorted kinds of MRS data from commissioning and Cycle 1 we should revisit how background subtraction is being handled by the pipeline.  At present there is a substantial disconnect between best practice, what the pipeline is meant to do (which differs from person to person), and what the pipeline actually does (which differs for MAST vs offline).

At present, the MAST data products are quite confusing; in cases of a dedicated background there appears to be a science cube, a background cube, a master-bg subtracted science cube, and another copy of the background cube?  This should be streamlined.

At the same time, there are substantial improvements that could be made to how both the spec2 and spec3 background steps work.

This ticket is being created to track this issue for discussion at an upcoming Cal WG to converge on the best path forward.

[stscijgbot-jp]

Comment by Alicia Canipe on JIRA:

Reassigning to Anton Koekemoer for CalWG tracking

[stscijgbot-jp]

Comment by Anton Koekemoer on JIRA:

checking in with David Law to get an idea of the state of readiness for the proposed spec2 and spec3 background algorithms, in terms of scheduling a future discussion with the CalWG.

[stscijgbot-jp]

Comment by David Law on JIRA:

Not yet ready to be worked; MIRI team needs to look into it further.  Estimate early Fall 2023.

[stscijgbot-jp]

Comment by Anton Koekemoer on JIRA:

thanks for filing this ticket - to help with prioritizing it, could we ask MIRI (David Law) also please to indicate rating numbers in the "Criticality Rationale" field for the "impact" and "urgency", along with the text describing the reason for the rating numbers? (see the figure further down the page at https://outerspace.stsci.edu/display/JWSTPWG/INS+Ticket+Prioritization])

[stscijgbot-jp]

Comment by David Law on JIRA:

Assigning back to myself, as action is on the MIRI team to figure out what if anything to do before anyone else can dig into this.

[stscijgbot-jp]

Comment by Anton Koekemoer on JIRA:

thanks David Law  for the update, also please add the rating numbers (scale of 1-4) for the MIRI team's assessment of the "impact" and "urgency" in the "criticality rationale field, along with a few words describing the rationale.