• Well I am not sure if you can get admission in NIT Calicut in any branch because your OBC-NCL rank is 83747 which is very high and you can only get NIT Calicut in lower branches if you are appearing in spot round counselling but you can get new NITs with this rank in 5th or 6th round of counselling but you won't be able to get branches like CSE , Mechanical or electrical.                        You must try govt. colleges in your state which take admissions through JEE mains score. You will be definitely eligible to take admissions in those colleges. Best of luck

Sorry to say that you cannot get seat in NITs 

The competition is cutthroat it's really difficult to get nit Calicut also even other nits 

As cutoffs close at 7 thousand itself 

Anyway u can try state top colleges else 

U can go for private colleges 

There are many colleges accepting JEE score