How many rounds of DTU LEET counselling will take place?

No, you are not eligible for the DTU LEET (Lateral Entry Entrance Test) if you are currently pursuing B.Tech in Biotechnology from NSUT

As per the official website of DTU, there are reservations for various categories as per the government of India norms. These include:

Scheduled Caste (SC)
Scheduled Tribe (ST)
Other Backward Classes (OBC)
Persons with Disabilities (PwD)
The reservation policy is implemented to ensure a fair and inclusive admission process. The exact percentage of reservations for each category can be found on the DTU website or the official admission brochure. The reservation policy includes 53.3% of seats for the General category, 10% for Scheduled Castes (SC), 5% for Scheduled Tribes (ST), and 10% for Persons with Disabilities (PwD).

Candidates need to provide a signed printout of the completed application form, admit card, mark sheets and certificates from the qualifying examination (Diploma), relevant reservation certificates (if applicable), two recent photographs, and a medical fitness certificate.

Offcourse you are eligible my friend to write exam if you secured a minimum percentage or marks according to DTU Tgen your eligible for that college 

In the DTU LEET (Delhi Technological University Lateral Entry Entrance Test) for CSE (Computer Science Engineering), Physics and Chemistry are typically not included for Diploma students. The subjects generally covered in the exam for lateral entry students are:

1. Mathematics
2. Engineering Mechanics
3. Computer Science & Engineering Basics (such as Data Structures, Programming Languages)
4. Basic Electrical Engineering

The focus is more on technical subjects related to the engineering discipline, especially computer science, rather than basic sciences like Physics and Chemistry.