Hi there,
Hope you are doing well.
There are only a few NITs which provide BTech + MTech in CSE, which are:-

• NIT Rourkela
• NIT Hamirpur
• NIT Patna
• NIT Agartala

along these few GFTIs also provide the same course:-

• IIEST Shibpur
• IIIT Gwalior
• IIIT Kancheepuram

Hope it would help.
Thank You