Hello,

Sastra University take admission by two ways, 70% of seats are filled on the basis of the Jee score and 12th marks in which 75% weightage is given to the 12th marks and 25% weightage is given to the Jee score. Rest 30% seats are filled on the basis of candidates normalized aggregate marks of 12th only. 

So, majorly to get admission in this university you have to score more in 12th. According to your rank it is difficult to get admission.

All the best