An "astute observation" refers to a keen or sharp assessment, understanding, or insight about something. It means being observant, perceptive, and able to discern important details or patterns that others might miss. Full definition
And yes, very astute observation about the late 90s style. (theadoredlife.com)
The show is, first and foremost, incredibly well written, with astute observations about pop culture, particularly as it relates to ethnic identity. (metacritic.com)
Her photographic work begins with astute observation, love of people and travel which is reflected in the nuances of her street photography. (cpw.org)