The analysis of post-ASO results needs to be as intensive of any work you do pre-ASO.
Results need to be studied. You must not spend a hurried two to three minutes looking at the data. You must review the new data before hurriedly implementing next steps.
Focusing too much on your keyword research and ASO is not enough.
Performing a proper analysis of your ranking pre-ASO will help you with your post-ASO efforts.
You need to check if you are ranking for all the keywords on your list- as well as words you might have already removed.
You should also be on the lookout for words you did not even know you were ranking in.
Include a wide range of keywords to track to cover all your bases.
All this data can help you formulate for effective ASO/keyword strategies if needed.