Engineering Entrance Exam

The counselling and seat allotment of JEE Mains 2017 will be conducted by Joint Seat Allocation Authority (JoSAA). JEE Mains 2017 counselling and seat allotment will tentatively be conducted in 6 rounds. JEE Mains 2017 counselling and seat allotment will be conducted for 31 NITs, 20 IIITs and 18 GFTIs, which are the participating institutes of JEE Mains 2017. The joint counselling and seat allotment of JEE Main 2017 will be conducted online, while registration (option entry), will tentatively start from the first week of July 2017. Only the qualifying candidates of JEE Mains 2017 will be able to participate in JEE Mains 2017 counselling and seat allotment.

Hello Kavya,
You have good chances to get admission at SASTRa University, Thanjavur.
You might also get ECE and CSE.
You need to apply through stream 2 if you have not appeared for JEE Mains exam.
Those who have appeared for JEE, they can apply through stream 1. In stream 1, 70% seats are filled and in stream 2, 30% seats are filled.
As your JEE score is not good, you just apply through stream 2 where you can get admission with your board exam marks itself.
So, I think you can get admission through stream 2 as you have really good percentage. Your total percentage out of 100 is only considered and not your marks in main subjects like physics, chemistry and maths/biology. The official website to apply for SASTRA University is www.sastra.edu and the last date is June 10.
all the best!