I don’t know the Tiger agreement that well but for Virgin Narrow Body it’s 13 rosters with 11/12 alternating days off per roster. If you get allocated or bid for standby (and some do) it’s 13 days off. 42 annual leave is separate. I think, but don’t quote me, you can take annual leave as a single day or as 42 in a row if you know what I mean.
The recent Eba gets extra days off included when the company wants you to flip you from a late to an early. As a result the days off tend to be more than the minimum. I’ve heard anywhere’s from standard 11/12 to 18 off per 28 day roster. I think Tiger is a monthly roster but again don’t quote me.