[Gotthard2][Correct] Store mask data properly for gotthard2 25um

Description

@mramilli reported a bug in the offline correction where the mask is stored with the wrong number of stripes.

It seems I made the mistake of forgetting about storing the mask after interleaving in the same way it is done for the data and gain.

This fix has a high priority as it needs to be available for the users by next week.

How Has This Been Tested?

• HOTFIXED in production

Relevant Documents (optional)

Types of changes

• Bug fix (non-breaking change which fixes an issue)

Checklist:

Reviewers

@hammerd @schmidtp

added Priority label

assigned to @ahmedk

changed milestone to %3.12.4

LGTM

(Feel free to merge irrespective of the performance question)

added 1 commit

• c85772f1 - remove redundant copy

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added 1 commit

• 748f4c2a - Small refactors and last piece of fix after testing for storing the right mask array

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changed the description

resolved all threads

merged

mentioned in commit a722d718