Dear Viswanathan, 

Congratulations on good score. 

The probability of security seat depends on factors such as exam attempted, category, reservations (if any), course, locality, college in preference. As data regarding this is missing its hard to predict. Hence you can revert back with all data required or can use the predictor tool. 

This tool helps you find colleges in your preference of course, locality etc. Here is the link for it :

https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.careers360.com/college-predictor&ved=2ahUKEwj70qbOg6fjAhVDOI8KHTQWD_EQFjAAegQIBxAD&usg=AOvVaw2AOFtKT1Kl7aX4aICHr3xY&cshid=1562647638730

Hope this helps. 

Good luck.