Exam

So you are eligible for stream 2 as you haven't written JEE Mains. It's hard to get a seat in main campus of sastra with your score. If you want only CSE you can apply for kumbakonam campus of sastra you can have a chance to get CSE.

Maybe you can get other branch seats with your score. You can try up to last round of counselling for those seats or you can join in any branch you got and if you done well in 1st year of engineering by getting 9CGP you can avail CSE offer.

You haven't mentioned your state board name. If you are from Tamilnadu, you can have chances of getting seat in kumbakonam campus of sastra. Apply for both campuses so that you can have more opportunities. Statistics vary every year, so try your luck. Wish you best.

Under Tamil Nadu quota, you may have 50-50 chances of getting bio engineering branches in main campus. Try up to last round of counselling procedure so that you may get your wished. If you are okay with kumbakonam campus you can apply for that so that you can get a sure seat with good branch. Wish you luck.

Under stream 1 maybe you can have chances to get other branch seats but not CSE/ECE because of JEE percentile. So attend counselling procedure so that you can try upto last you may get you wished. Otherwise you can have another chance that you may join in the branch you got in sastra for 1st year. If you done well in 1st year ( as every branch students have same courses in 1st year) by getting 9 CGP you can have a chance to get into CSE. Wish you luck.

You have 50-50 chances of getting mechanical branch under Tamilnadu quota as per previous years statistics. Counselling will go for 3 rounds, don't expect your offer in 1st round of counselling maybe try up to last you may get a chance. Wish you luck. Statistics vary from year to year.