Hi admission for DTU ,NSUT and IIIT D take place through JAC  Delhi counselling on the basis of jee main rank . JAC Delhi 2022 registration and choice filling will start from third week of September (tentatively).

for reference you can check on this link

https://engineering.careers360.com/articles/jac-delhi

here is the official website of JAC Delhi counselling

https://jacdelhi.admissions.nic.in