MAST: Locate & Download FGS data?

[keflavich]

Does the MAST API (and/or, the Observations interface) support access to & retrieval of JWST FGS data? I was surprised at this null result:

regionCoords = coordinates.SkyCoord(0*u.deg, 0*u.deg, frame='galactic')

matched_obs = Observations.query_criteria(
    coordinates=regionCoords,
    radius=3*u.deg,
    obs_collection = 'JWST',
    instrument_name='FGS',
)

(matched_obs is empty)

because there are many observations executed in the Galactic Center region, and each includes several FGS images.

It may be that I specified the instrument_name incorrectly, but I couldn't piece together how to determine the correct instrument name.

FGS data are not associated with program IDs, even when they are taken under a specific program, e.g.:

>>> obs_table = Observations.query_criteria(proposal_id=2221, )
>>> set(obs_table['instrument_name'])
{'MIRI/IMAGE', 'NIRCAM/IMAGE'}

but the FGS data can be found by get_product_list:

Observations.get_product_list('90458115')

Is there a direct way to search for the JWST FGS data, or do I have to search first for all executed programs, then filter through the product lists?