As there are limited seats in sastra university. With the rank you got it may be difficult to join in sastra . To join in sastra you may get rank less than 3000 in main campus and lessthan 1500 in src. You can get seat if and only if possible in last councelling . But then all important groups may be occupied . You know that sastra councelling is also started . You can kindly check in sastra web site

https://sastra.edu/