Hello dear, 

Your score is pretty low to get into Civil in any of the top notch colleges affiliated to Anna University. There is almost no chance to secure a seat in MIT, PSG university of Technology, SSN institute of Technology, Alagappa College of Engineering, Anna University, Chennai; Anna University, Tiruchirapally. If you're really interested and determined to stick to Civil Engineering, you would be getting into any of the mediocre colleges with your score. 

Hope this helped you 

Thank you and keep asking:)