Using Greaseweazle to judge disks and drives?

[ankls]

Hi, I'm pulling my old Amiga disks out of "long term storage" and find quite a few unreadable and am unable to write them properly. But surely this is not a binary thing, since degradation of disks is going on gradually. The same with old PC drives...

Now I wonder if Greaseweazle could be extended to assist in judging the quality of drives or media.

Like, for example, writing defined data to a disk (not necessarily in an existing format) and then judging some sort of error-rate or similar when reading back. Are there criteria for the quality of the returned signal that can be easily accessed?