If you are sure about your interest in CSE, DTU is the best option for you. However, if you are yet to identify your area of interest then go through the following parameters

• Placement: DTU has ties with huge CSE companies like Amazon, and Microsoft that offer excellent packages to the students even better than Civil at IIT Roorkee. I know many friends from NSITs and DTU that work in Microsoft today.
• Research: The CS department is undoubtedly better in terms of research work and opportunities than the Civil.
• IAS: For IAS, the most preferred branch is Civil. However, if you do for Roorkee, you will have limited options for coaching which can be easily sought at IIT Delhi
• MBA: Again, because of better coaching institutes, IIT Delhi is better to prepare for CAT.

Once you are sure of your inclination making a decision won’t seem so difficult!