Hello Vallabhkumar!

For getting a seat in IIIT you must have secured a valid rank in JEE MAINS and cleared the cutoff of that particular IIIT in which you are seeking admission. Sports quota isn't considered in IIITs while seeking admission. 

I have given you information regarding government IIITs. There are some colleges who have named themselves as IIIT but they aren't genuine. 

Hope that helps!