Hello Candidate,
For BTech in Computer science engineering there are plenty of good colleges available in Gujarat. The top colleges offering CSE are :
Indian institute of technology, Gandhinagar
Sardar Vallabhbhai national institute of technology,surat
Institute of technology, Nirma University
Rai University
Government engineering college, bhawnagar
Dhirubhai Ambani institute of information and communication Technology.
All the best :)