With your marks, it’s difficult to get the most preferred branches at SASTRA University. You won’t be able to get CSE, IT-related branches, or any integrated 5-year courses.
Also, SASTRA University doesn’t have any management quota. But there is an NRI quota. For this quota, the cutoff is less. However, in order to be eligible for the quota, you should have a close relative who lives in a foreign country.