Hi Ashutosh,

Congratulations on the JEE mains score, but I am sorry say that you are not eligible to take an admission in any IIITs or NITs, because as rules put down by the authorities says, a candidate is eligible to sit for counselling of JOSAA if he has a minimum of 75% in 12th and have qualified JEE mains. 

As we can see that your 12th percentage is very much less than 75% so you won't be allowed to sit for JOSAA counselling which provides all the NITs, IIITs and GFTIs.

I wish you best of luck

Thank you