NIT

Yes, definitely you can pursue Masters in Technology M.Tech in Data Science from Indian Institute of Technology IITs and National Institute of Technology NITs through Graduate Aptitude Test in Engineering GATE because both the institutions accepts GATE entrance exam scores primarily for admission to MTech. There are some other colleges in Delhi who offers M.Tech course through Gate scores like Delhi Technological University DTU, Amity University Noida, Netaji Subhas University of Technology NSUT, Indraprastha Institution of Information Technology IIIT Delhi.

Yes, you can get some NIT which are situated near Uttar Pradesh which have low cutoff ranks including NIT Patna, NIT Allahabad and NIt Bhopal. You may be able to get branches like Civil Engineering, Mechanical Engineering and Electrical Engineering in NIT Patna or NIT Allahabad.

If you got 98.8 percentile in JEE Mains exam then it is considered as most best score 

The possible NIT names are given as following 

1 MNIT Allahabad 

2 VINIT Nagpur 

3 NIT Surathkal 

4 NIT Rourkela 

5 NIT Trichy 

With JEE Main CRL rank 99500 and OBC-NCL rank 33000, consider:

- *NITs:* NIT Patna, NIT Jamshedpur, NIT Allahabad, NIT Bhopal, NIT Calicut

- *Branches:* Electronics, Electrical, Mechanical Engineering

- *Next Steps:* Check JoSAA website for cutoff ranks and participate in counseling for seat allocation.

You might not get good NIT colleges and also good branch in NIT, you might have to take lower NIT and the branches will be like civil, chemical, environmental engineering

While for IIIT, you can try for IIIT Nagpur with lower branch, also, you can try. IIIT Ranchi. 

No, it's not possible to get a seat at NIT in admission process 2025 with this JEE Mains score because your score 61 would be around 70-80 percentile which is very low as compared to the cutoff percentile of NITs even it is very difficult to get a lower ranked NITs like NIT Patna, Bhagalpur if you belong to Unreserved category there may be chance if you belong to SC ST category to get low ranked NITs.

The JEE Main scores are admitted at all of 31 National Institutes of Technology (NITs) in India to various courses of Bachelor of Technology (B.Tech). These are famous NITs such as NIT Trichy, NIT Warangal, NIT Surathkal, MNIT Jaipur, NIT Rourkela and many others scattered in various states. Your JEE Main rank will determine whether you get an admission into a particular college and in a particular branch and category, cutoffs change every year with variables such as the difficulty of the exam and its number of applicants.

Your JEE Mains ST category rank is 6690 so you would have quite a good opportunity in getting admission in different NITs, GFTIs and IIITs. Though the best departments in the best institutes may be hard, there are other reputed institutes that provide various type of engineering degrees in which you will have a chance to get an admission under JoSAA counseling. The advice is to be active during the counseling rounds and discuss all the possible options.

Several NITs offer M.Sc. Mathematics programs through the IIT JAM exam. These include NIT Trichy, NIT Warangal, NIT Calicut, NIT Jalandhar, NIT Rourkela, NIT Allahabad (MNNIT), and NIT Durgapur. Additionally, NITs like NIT Agartala, NIT Hamirpur, NIT Jamshedpur, NIT Manipur, NIT Srinagar, and NIT Silchar also participate in the CCMN (Centralized Counseling for M.Sc./M.Sc. (Tech.) Admissions) for M.Sc. programs, including mathematics

With a rank of 2426 in IIT JAM (Mathematics), you are likely eligible for several NITs and some of the newer IITs for MSc programs. You should be able to get into NITs like NIT Silchar, NIT Srinagar, and possibly some others with your rank

You might also be eligible for newer IITs like IIT Jodhpur, IIT Mandi, or IIT Ropar, but it depends on the specific programme and cutoff for each institute.