Do not join NSIT even if you get admission. They will not give u any facilities to pursue your Ph.D. They will not even give you a place to sit n do your work. Stipend / Fellowship is very little only 25k pm and that also comes after 4/5 months
They will make you do do lots of useless work and don''t give facility to even take printout etc. Most of the labs will always be found closed, so you don't even get a proper computer to do your work.
No financial assistance to present your paper in international conference. Teachers have no knowledge of how to do research.
In short it is a very bullshit place SO MY ADVICE DONT TAKE ADMISSION HERE