Well, It would be more easier for me to guide you if you had told your hoe state.

But now looking at your 50.3k CRL and also considering your Quota, your equivalent rank would be around 35k CRL

Note - this Equivalent CRL is given from the best of my knowledge and analyzing the performance of the students this year

Considering the best colleges among NIT for a CSE at this rank is away from your reach. I'm really sorry to notify you that.

But at this rank, I would recommend you to opt for 

Thanpur institute.

Yes, (I've no affliation with Thapur institute) but I've personaly observed that it is far better than lower ranking NIT's. As considering the infrastrcture, Alma mater, NIRF ranking stands better than many lower ranking NIT's.

All the best