Hey there in csab only those nit take part which has some empty seats left and the probability of getting any NIT in CSAB its depends upon the no of seats available this year cutoff and the no apply for CSAB. MOSTLY 3-4 seats are available in each NIT. According to you jee mains ranking we cannot predict as there are many more criteria while selecting a candidates and some times they left the seat empty instead of taking student. 

Hello Sara Ramya shri

You can't be able to get admission in any NITs IIITs and government engineering Colleges with this rank in JEE mains. Even you can't able to get it in special round counselling. So you should choose an another option, I mean some good private engineering college.

All the best