https://engineering.careers360.com/articles/sastra-btech-admission

Read this article to find whether your percentile is upto the mark for admission in CSE or not.

Your boards marks is enough to fulfil the eligibility criteria for admission since minimm requirement of marks of boards is 60% from PCM and optional elective. But what will be taken into account is your JEE MAINS percentile.

Let's hope for the best and hope you have a bright and promising career in near future.

Thank You