On what basis is your rank calculated for the architecture module in JEE?

Admission to Nits, Iits and CFTIs participating though Central Seat Allocation Board will be based on All India Rank subject to the condition that the candidate should have secured at least 75% marks in the 12th class examination, or be in the top 20 percentile in the 12th class examination conducte

Based on JEE Paper 2 marks, ranks are allocated. If 2 papers have the same marks, the paper with higher marks in the drawing part will get a higher ranking.