Hi, soe of the top colleges/1st tier colleges in Delhi University to study Bachelors in Computer Science are:

• Hansraj College
• Miranda House
• Indraprastha College for Women
• Shaheed Shukhdev College of Business Studies
• Sri Guru Gobind Singh of Commerce
• Shaheed Rajguru College of Applied Science
• Keshav Mahavidyalaya
• Sri Venkateshawara
• Ram Lal Anand College
• Deen Dayal Upadyaya College

With 91% in OBC category, you'll pass the cut off bar of most of these colleges by 1st list or maximum by 3rd list. You can get a relative idea of what your chances are by refering to last year's cut off from the DU official website.

Good Luck