There's a funny saying “If you get admit into SASTRA, you are a future TCS employee. “

Every year “atleast” 80% of all engineering students get into TCS. And some companies are CGPA biased. Above 8.0 or 8.5 will allow you to sit in some good companies like Ashok Leyland, EBay, etc. So get above 8.0 and it's almost a guarantee that you’ll get a job.

All the best!