Does the report show also the diagnostics information? Is "a merged" report available with information about erasure and diagnostics?

Yes, there is "merged" report available that includes both erasure and diagnostics.

The report is generated according to the process that is run:

1. Data Erasure Report (shows erasure results)
2. HW Report (shows diagnostics results)
3. Data Erasure Report (shows diagnostics + erasure results)