Hello Shweta, 

In the first round, the cutoff score for an OBC category candidate is 172.80. As per the previous year cutoff trends, here are the cutoff scores for OBC candidates over the rounds - 

• Round 1 and 2 - 150.58
• Round 3,4 and 5 - 130
• Round 6 - 124

As you can see, the cutoffs dipped drastically after the second round, so I will say that you have a decent chance of getting a seat in AU in the fourth to the sixth round. Although, while waiting for the rounds do make sure to look for other institutes and universities to make sure you get a seat in your desired place.

All the Best!