If you are looking for the best college for CS then go for DTU among the aforementioned institutes. Although all the colleges will offer great opportunities, DTU has an upper hand in certain areas.

• DTU has an amazing coding culture. Students of every branch be it CS or EP are involved in coding at some level.
• Technical societies like IEEE, ASME, CSI, and IET organize a number of coding competitions to ensure the active participation of the students. 
• DTU has a number of entrepreneurs who are on the lookout for coders. So here, you will not only learn coding but also implement it.
• Its location plays a big role in improving its brand value and opportunities. 
• DTU has a rich legacy and has given birth to a number of well-reputed colleges. It has a strong alumni network owing to its early establishment.
• Located in Delhi NCR, students are exposed to better placement opportunities in IT companies.
• DTU has an amazing placement scenario. DTU's highest package stood at INR 1.8 CPA whereas the average package stood at INR 15.16 LPA.
• DTU has the highest non-tech placement percentage (47%) among other colleges.

Ultimately a college can only give you the initial kick in your career but the rest depends on your hard work and determination!

For a better understanding, I will compare both IIIT Delhi and NSIT Delhi based on some common aspects

• Placement : The placement scenario of both the institutes is similar with IIIT Delhi having a slight advantage. NIST's median package stood at INR 16 LPA while IIIT Delhi's average package stood at INR 23.72 LPA
• Campus : NSIT has a higher campus than IIIT Delhi but is old. IIIT Delhi is a relatively new institute so its infrastructure and campus facilities are modern.
• Hostels : NSIT has bigger rooms than IIIT Delhi but IIIT DELHI has rooms with better facilities. There is the provision of AC at night in summer and a heater at night in winter.
• Faculty : IIIT DELHI is the clear winner as its faculty pool is even better than some IITs.
• Reputation : Being older NSIT enjoys a better brand value and recognition both in and outside India. 
• Coding Culture : IIIT DELHI has a much better coding culture than NSUT because the institute is CS centered.
• Fees : IIIT Delhi charges higher fees around ?4.62 Lakhs (1st Year Fees) while NSIT fees are around ?2.29 Lakhs (1st Year Fees)
• Clubs : NSUT has a better campus life and extracurricular culture because of the various clubs so it has an edge in this aspect. 
• Campus Life: IIIT Delhi has a very rigorous and tiresome campus life while NSIT has a more laid-back campus life. 
• Curriculum : IIIT DELHI has a more updated and modern curriculum in comparison to NSITs outdated curriculum irreverent to the industrial trends.

Overall, if you want a rigorous campus life more focused on academics choose IIIT Delhi but if you are looking for a relaxed experience NSIT is the one for you.

NIT Trichy does not only offer a better placement scenario but also offers a unique learning experience especially if you are a north Indian. You will get to learn many new things and experience the diversity of cultures. A friend shared his experience. After studying at NIT Trichy

• Language: He was able to differentiate between Tamil, Telugu, and Malayalam. He made some amazing South Indian friends that taught him a lot about their cultures
• Crowd: The peer quality is no joke here as you will be surrounded by some of the best minds in the country. This intense competition will only encourage you to perform better
• Extracurricular: NIT Trichy has around 50 clubs catering to various passions and fields. There are technical as well as social clubs that are completely run by the students. There are clubs for everything from theater and drama to music and fine arts. 
• Soft Skills: At NIT Trichy you will get the chance to inculcate some amazing soft skills that will enhance your CV. You can become a marketing manager for a national-level college tech or cultural fest.
• English Language: The only way to survive here is to speak English so NIT Trichy also helps in improving your English language which is very important in today's world.

To summarize, NIT Trichy is better than NSIT and DTU in every aspect except location.

Both DTU and NSUT are tier-1 engineering colleges offering excellent education and opportunities to their students. However, while choosing one over the other you would like to consider the following points 

• NSUT has a number of CS-related courses and gives an edge over its counterparts in terms of internships and placements.
• NSUT does not function under the umbrella of DU anymore.
• The authority of NSUT is very lethargic and thus the standards of fests conducted are also very poor. 
• NSUT has very few core opportunities.
• In NSUT, very few marks are allotted despite the students working hard. A poor GPA often affects your placements.
• There are strict rules for attendance here so you might not be able to enjoy college life.

In all, DTU seems to be a better option than NSUT.

On the basis of placements, I would rank the aforementioned institutes in the following order

Bits Pilani, Pilani Campus>|IT H>Bits Goa>Bits Hyderabad>Top 3 Nits>|IT Delhi/NSUT>DTU

BITS Pilani has a better placement scenario than IIIT Hyderabad although its average package is less than IIIT Hyderabad, this is because BITS has a number of branches and the average package is calculated after considering the packages of all branches whereas IIIT Hyderabad has only two branches ie CS and ECE. Both these branches are top branches so automatically its average package becomes higher than BITS Pilani. If you compare the placements of the CS branch alone, BITS Pilani will have the upper hand. However, if you want to pursue a career in research in CS, ten choosing IIIT Hyderabad will offer better opportunities. Basically, IIIT Hyderabad will make you a better coder whereas BITS Pilani will make you a better engineer.

It's important to note that the above ranking is based on placements alone and if you consider the research culture, then NITs will fare better than BITS mainly because they are government institutes and receive huge funds solely for the purpose of research.

Both IIIT Delhi and NSIT are well-established institutes both offering good quality education in a diverse way. IIIT Delhi is a research and CS-oriented institute while NSIT offers an overall college experience in a variety of branches. NSIT might be a good option for you it has a number of advantages like

• It's located in the capital city of India so the placement opportunities and exposure offered are top-notch.
• The academic workload is minimal which leaves students with enough time to pursue other passions.
• Talented peers enhance the overall learning experience.
• NSIT has a very good coding culture and the majority of the students are involved in coding.
• NSIT has an excellent placement scenario and the median package this year stood at INR 16 LPA.
• The cutoffs are higher thereby maintaining the standard of education.

So unless you want to enter the Management and IAS field, consider joining NSIT.

Here are a few pros and cons of the institute that will help you understand this matter better

Pros

• NSIT offers an excellent ROI considering its minimal fees and excellent scholarships, internship stipends, and placement opportunities. 
• The academic workload is very low and studying a month prior is more than enough to ace the exams here. This helps you save time for MOOCs and build up your CV.
• The quality of companies that visit for placement is top-notch. The institute welcomes diverse recruiters from silicon valley startups to very established big MNCs. 
• NSIT Delhi has some of the most talented people taking admission here. The 1% of people in AIEEE or JEE-MAINS get to study here. An excellent peer culture helps you gain extra knowledge of life.
• NSIT has a very rich coding culture and has produced some of the best coders. Online coding is common here and people can be seen involved in Codechef, SPOJ, Codeforces, and TopCoder.

Cons

• The syllabus is outdated, obsolete, and fails to meet industry trends.
• The faculty is pretty demotivated and has no interest in teaching. You will have to resort to self-study most of the time and seek help from your seniors.
• Being a government college, getting some administrative work done is a big task. The results are often full of errors and approaching the administration and getting your query solved is difficult.
• The research culture is pathetic here and the faculty do nothing to promote it among students. In fact, it’s difficult to even approach them for a project.

Overall, the institute offers a plethora of opportunities, especially in the IT sector but the quality of academics is a bit on the average side. As for your question, the yearly compensation is not 1 crore but much less. The figures are misleading and pay us just like what Google would pay in India around INR 24-25 LPA.