These are documentation packages for satellite mission data downlinked to ground (usually via Xband, except for some missions).

Each ZIP file contains the full doc package for one mission. Once unzipped, the single spreadsheet provides an overview of the data at the various levels of packaging on the link:
- CADU level
- VCDU level
- ISP level

All header/trailer fields are shown in the structure, and by hovering your mouse on the various cells you can get more details:
- possible values for the field
- reference to the formal project document and section (where the full story is available)

All formal documents are present in the "docs" folder next to the spreadsheet, and can be accessed from the links at the top of spreadsheet for convenience (assuming you did not change the folder name or location).

Any question, comment, mistake found, please address to one of the names listed at the top of the spreadsheet.