Please check the state's rules on Leave and Holidays in which your organization is operating. If the state does not have any rules on Leave and Holidays, you should not mark absent for the weekly off, i.e., Sunday. Punjab State rules on Leave and Holidays state that no leave will be adjusted against the weekly off that falls in the intervening period of leave.
Casual Leave Guidelines
As far as casual leave is concerned, the state rules typically describe 7 days of CL in a calendar year. Accordingly, you can grant 1 CL after every 52 days, even to a probationer.
Regards