You can check your chances in various colleges based on your score and category, you should try Careers360 college predictor and rank predictor.

Link for Careers360 rank predictor:- https://engineering.careers360.com/gate-college-predictor

All the very best and good luck.

Anyways to give you an idea

IITB,IISC will close at approx AIR100.
IITD,IITM, approx AIR 150 to AIR200
IITK Separate Written Test,Interview(Shortlist Cutoff AIR400-500)
IITKGP,IITR approx AIR 150 - AIR 300
IITH,
IITJ,IITP, Approx AIR 200 - AIR 350 - AIR 500 - AIR 600

NITT,NITK,NITW etc Approx AIR400 - AIR1000
NITC,NITA etc Approx AIR 800- AIR 1200
DCE,NSIT,COEP etc Approx < AIR 1400,1500

Now the next logical question is , how much is that AIR corresponds to , GATE 2013 AIR 1 = 69.33
GATE 2012 AIR 1 = 90
GATE 2010 AIR 1 = 85.33