OPJU,Raigarh (http://www.opju.ac.in/) is best Btech college  in computer science engineering.

The Department of Computer Science and Engineering at OP Jindal University imparts quality education at undergraduate and postgraduate level with emphasis on basic computing principles, rapidly evolving technology, and continuous need for innovation in this field. To ensure that students are sought by IT companies, the department provides training in various cutting edge technologies, inculcate professional behavior, instill ethical values and develop leadership and team working capabilities. The program provides flexible curriculum enabling the students to achieve their goals and make them industry ready.

Hello,

Some of the top colleges for BTech in computer science engineering are as follows-

• Indian Institute of Technology Madras
• Indian Institute of Technology,Bombay
• Delhi Technological University, Delhi
• Indian Institute of Engineering Science and Technology Shibpur
• Jadavpur University, Kolkata
• Dayananda Sagar College of Engineering, Bangalore
• College of Engineering, Pune
• Lovely Professional University, Phagwara
• RV College of Engineering, Bangalore
• PSG College of Technology, Coimbatore

For more details, you may consider going through the following link-

https://engineering.careers360.com/colleges/list-of-computer-science-engineering-colleges-in-india