What is the level of NSIT DELHI compared to IITs and NITs?

Like every other Institute NSUT has its own pros and cons. It enjoys a good location in addition to excellent placement opportunities and a number of societies. However, it has no wifi access and the institute does not have a CGPA system. This affects your future prospects to a great extent.

Here is a comprehensive comparison of NSUT Delhi with IITs and NITs

• NITS vs Old IITs : Obviously, I think all old IITs are better than NSUTs considering factors like academics, infrastructure, faculty, research, etc 
• NSUT VS New IITs: Although IITs have a brand value attached to them, the new IITs have poor infrastructure and faculty pool. NSUT on the other hand has better infrastructure and also enjoys a good location. So if you want to go for CS/IT, choose NSUT else consider your personal preferences.
• NSUT vs NITs: The top NITs are better than NSUT but the problem is they are located in South India. So, as a South Indian, you may face some issues.

Choose whatever aligns with your preferences!