According, to 2017 cut off you can check the details below.

Cut off is based on general category and other state quota. Cut off marks and rank varies according to the branches.

NIT Rourkela - You need to score more the 130 marks in JEE Main to get NIT Rourkela. To get CSE branch you need to score more then 215 marks.

To check the cut off rank you can refer below link

https://engineering.careers360.com/articles/jee-main-cutoff-for-nit-rourkela

NIT Durgapur- You need to score more the 135 marks in JEE Main to get NIT Rourkela. To get CSE branch you need to score more then 195 marks.

To check the cut off rank you can refer below link

https://engineering.careers360.com/articles/jee-main-cutoff-for-nit-durgapur

Good Luck!!