hii puneet,

 as you mention above your rank in the ews category. there is a neglagible chance you have to get cs or it in any nit but you get any other branch in lower nits or you get cs or IT  in any good private college for more information you use career 360 predictors.

I am providing you the link for the previous years and expected for this year cutoffs of various colleges that take admission on the basis of JEE MAINS Examination. Visit the link and know your chances:-

Https://engineering.careers360.com/articles/jee-main-cutoff