Hey there

Admissions in sastra university is like 70% of the seats is made through stream 1 on the basis of JEE Main scores and normalized scores of the 10+2 or equivalent exam. 25% weightage is given to JEE Main scores and the remaining 75% is given to marks scored in 10+2 or equivalent examination. The combined scores is used to prepare the rank list. Seeing your JEE percentile your rank will be around 67k and your 12th CGPA is good So you have chances of getting sastra university. But getting Top branches is tough.

check the link

https://engineering.careers360.com/articles/sastra-university-btech-eligibility-criteria

good luck