Hello Kayser,
The NBU master do not provide the modified information to user. If it desing like that the application become very complex and defficult to manage the query and maintain the database. For that NBU provide very good tool, call OpsCenter.
This product give you multiple option to genrate the day to day reports and very helpful for modified script and report. It help to reduce the day to day manuall work of admin.
Example:
Backup failure
Backup complition
Data size backedup
etc .....
For more information please refer the OpsCenter guide.
http://www.veritas.com/docs/000004623
Thanks & Regards,