Hello Aspirant,
With your rank you can't get your desired branch in Nit till the 7th round of Josaa counselling,  one thing that can be done is to try for Csab counselling.

Hello Bhupendra,
Yeah, you have to participate in the CSAB special round 2019 to get the best seat with your crl rank. But no one can pridict the closing ranks. So, once you can check the previous year closing ranks for all NITs, GFTIs and IIITs and fill your choices in the special round counciling of CSAB 2019 then you can get the seat definitely. I will provide one link. You can check the previous year closing ranks. Here is the link.
https://drive.google.com/file/d/1-CMzw-QVCt-acNMOYYhsks5StbMaXCG6/view?usp=drivesdk
You can go through this link and check it. Hope it helps you.
Thank you.