it is not a chipmunk we do not have chipmunks in India it is three strip Indian palm tree squirrel more from Wikipedia
The Indian Palm Squirrel (Funambulus palmarum) also known as Three-Striped Palm Squirrel, is a species of rodent in the Sciuridae family that can be easily domesticated and kept as pets. It is found naturally in India (south of the Vindhyas) and Sri Lanka. In the late 19th century, the Palm Squirrel was accidentally introduced into Western Australia where it has since become a minor pest that is actively eradicated due to its lack of natural predators. The closely related Five-striped Palm Squirrel Funambulus pennantii is found in northern India but partly overlaps in range with this species.