Check SOURCE_ID and source_id

[tomasstolker]

• The column of the Gaia source ID was changed from source_id to SOURCE_ID so both are now checked
• The gaia_epoch attribute needed to be set when reading from a query_file
• Fixed an issue related to the number of dimensions when plotting the posterior

[gotten]

I get the same error as the CI on a fresh install of your PR.

[gotten]

ndim also includes the parameters of the host star. so it is bigger than the amount of labels. so the if statement that checks the dims and appends a label uses a value that wasnt expected.

ndim is a weird leftover from the way we ran the initial code.

if i recall

• the host star can be fixed at median coordinates or used with the gaia measurements as prior (also with or without RV prior) 0, 5, 6 dims
• the background star can be fit with ra dec and propermotions and fixed at infinity or the parallax is fit with a realistic prior based on the original Gaia DR3 priors (another 4 or 5 dims)

a robust fix is to revamp the ndim system. for now we need to change the number in the if statement that appends a parallax to the labels. I think we kind of assume in the end that we use "11" dimensions in almost all fits. I'm running a test now with ndim==4 replaced by ndim ==10 and ndim==5 replaced by ndim==11.

[tomasstolker]

Right, I agree, it requires a more complete implementation! Let me try to fix this case and I will leave a more robust implementation for someone else, since I don't know the code sufficiently well for that.

[gotten]

Still crashes?. So label is defined by us as something that is 4 or 5 long. And cornerplot looks at the size of samples (extracted from dynesty results) for the size of the for loop that also goes over the labels. So there can be a mismatch there.

[tomasstolker]

I couldn't find an easy fix, so reverted those changes!