Hey!

You can see previous year's cutoff and draw an estimate that which colleges are you going to get for Computer Science with your rank by using the link given below

https://engineering.careers360.com/articles/comedk-uget-cutoff

If we are to talk about the top 15 colleges, I am afraid but chances your chances for the branch you want are very slim. You could look into other colleges or branches based on your preference. Hope this helps.