Hello dear, 

Your score is way too low to secure a seat in computer science engineering in top colleges which are affiliated to Anna University like PSG University of Technology, Alagappa College of Engineering, MIT, Anna University, Chennai; Anna University, Tiruchirapally; SSN College of Engineering. If you are particular about the branch, trying for mediocre colleges can help you. 

Hope this helped you.

Thank you and keep asking:)

Thabk