Functionality to read and analyse data from RHESSI mission archive

[hayesla]

Describe the feature

There is now lots of nice data products available on the rhessi mission archive
https://hesperia.gsfc.nasa.gov/rhessi3/mission-archive/index.html

It would be good to scope out and add functionality to sunkit-instruments on ways to read this data and analyse it. For example, a way to read the rhessi spec and srm files which could then be imported into sunkit-spex to do spectral fitting etc.

The image cubes could be read in as ndcubes etc.

More to think about here and scoped out as a project

things to think about:

• the visibility files could be used together with xrayvision to construct images (maps) in python
• the event lists/flare list reader
• the spectrum files and srm files for both the standard energy resolution files and the flare high resolution files
• reading the image cubes as mapcubes (ndcubes) or something

[hayesla]

@ianan if you have any other thoughts here on what would be nice to have RHESSI wise

[ianan]

For these files to be useful often requires additional info from other files, which is easily available within sswidl, for instance flare list info or times for flares/night/saa/decimation, times for "good" detectors etc

From looking at the current functionality already have the ability to read the summary and dbase files (lightcurves and flags) which gives some of this info, but need to double check that.