These audit logs can be viewed using the NetVault reports. There is a pre-defined report Single User's Audit Trail. Reports can be customized to show audit data by including the Audits component class.
To run the Single User's Audit Trail:
This will reveal a small window where you can specify values for:
User(String) = 'user_you_wish_to_query'
Date fields = to specify a time span to cover