Hi, Mayank.

Cut off for counselling is

• Civil Engineering 7245
• Computer Engineering 3539
• Electronics and Telecommunication Engineering 7876
• Petroleum Engineering 15896
• Petro Chemical Engineering 10360
• Mechanical Engineering  3424
• Mechanical Engineering 3775

For CSE, a rank around 2000 will be very good. So according to last year, you should have a score around 155. 
As you got 800 rank it is very sure that you'll get into cse brank in the college

Goodluck