Hello Sairaj,
Yes getting around 480 is considered good in Aiats. If you get that year round you can be sure of getting a government medical college seat. The ranks considered topmost are from 1-200 Air. You'll get the best college of your state with that rank in AIATS.
Keep Practicing.
1. Go thoroughly the Akash books
2. check out the previous year question papers and solve more sample papers.
3. you need to notice your mistakes in the paper and check where you are lagging in.
Hope it helps.
All the best.
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile