Dear Vatsal, for getting admission in NSUT(previously NSIT) for B.Tech you should score well in JEE MAINS as the score of JEE MAINS is considered. Your rank should be under 5k to get Computer Science and Engineering branch in GEN category. If your rank is above the aforementioned you may get IT, ECE, ICE depending upon the cut offs for respective branches.
For M.Tech, GATE score is considered and being one of the top colleges of engineering the cut off level matches its reputation.
All the best
Hope this helps
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