Dear Rahul,
saptools and sybmgmtdb they aren't tablespaces or tables. They are system and user databases respectively in Sybase.
Is it the data or the log portion getting filled in regularly? Assuming it id the log. I would suggest you to have "trunc log on chkpt" enabled for them. Secondly have a dedicated log device created for each of the database.
Regards,
Ajith Prabhakaran