Validate the output of all reader masks

[evrose54]

Requested Update

Description

This issue requests that we should go through all of the reader plugins and verify that the masking that they implement works as expected and produces valid output. If possible, it'd also be nice to generalize common data manipulations used by readers so that we could ensure the code is working in just one location.

Background and Motivation

This stems from testing @jsolbrig and I performed on PR #427. When checking the output of B03Rad, we noticed that values of -999.8 still existed when reading from abi_netcdf. Further testing showed that all Rad channels had the same issue. Ref channels were fine, which makes this a bit confusing. Masking performed in that PR should be applied to all values less than or equal to -999.0, which didn't seem to occur here.

Code to demonstrate issue

geoips.plugins.modules.readers.abi_netcdf:get_data:1079 in PR #427.

Checklist for Completion

• Check the output of masks for all readers
• Fix problems if they exist
• Considering abstracting masking code to a singular location to be used by all readers instead. This would improve maintainability and would reduce code duplication where applicable.