Ah, the murky world of database queries in TSM.
Even in old versions of TSM, where the database engine was some proprietary thing, you could still issue select statements. Now that DB2 runs under the hood in TSM, you have all the power and flexibility that DB2 provides for getting the information you want from DB2.
Log in as your TSM admin, connect to DB2, connect to the TSMDB1 database, and start looking around. I haven't taken the time to dig through the innards of newer versions of TSM, but you'll likely find tables that contain what you're looking for. (You can get information on the fields in tables with 'describe table <owner>.<tablename>.)
Report back and let us know what you find!
-JD.