Since, you've got some what low percentage in class 12 you can opt for the private institution in the chandigarh region. Here's the list of the private colleges of chandigarh:
1.Chandigarh University, Chandigarh
2.chitkara university, chandigarh
You can go for other too...
Thankyou

Well, for the private side you can try for Chandigarh University, CGC etc. 

Best of luck!!

Hii Lakshya...If have a strong interest toward computer science then IIITH is the best for you according to me. Hope this helps you.