Hi dear,

You have scored 97.5691433 percentile in JEE main that means your rank should be around 21203. You can also calculate your rank as

Rank=(100-your percentile)×869010÷100

You have to go IIEST Shibpur or IITs for aerospace engineering because aerospace engineering is not provided in NITs, BITs and IITs. With this rank you are eligible for IIEST Shibpur.

Hope it helps.