Hello Dear,

CSAB round is same as JOSSA counselling round. Only the difference is that CSAB round is for filling the vacant seats.

If seats are vacant for your category then they will consider your category rank. If there are only open category seats are vacant after JOSSA then your CRL will be considered.

Reporting time for CSAB is less when compared with the JOSSA. But the process of counselling will be same as JOSSA.

Hope this helps you.

All the Best!!!