The quotas are divided into Kadapa, Tirupati, Vja, Rajahmundry, Vskp. So the quotas are as follows for Tirupati Vskp in SL/3AC /2AC
General 40/161/9
Tatkal 77/116/20
Premium Tatkal 52/54/10
Tatkal and PRM tatkal are...
more... same for all stations.
The irony is pilgrims should book return ticket in tatkal on the day of arrival and Darshan in Tirupati before doing other things at 1000. They should be tensed till they get confirmed ticket in tatkal as they travel with family and kids.