Once you have cleared Immigration, you are to move towards arrival baggage carousel followed by customs clearance.
There are two channels of customs clearance for arriving passengers:
Green Channel - for passengers not having any dutiable goods or other items for which declaration is not required.
Red Channel - for passengers having dutiable goods or any other items for which declaration is required.
For more details, please visit www.cbec.gov.in
Respective flight belt details are efficiently displayed on the Flight Information Display System as well as on the respective carousel at the arrival hall.
You may also refer to the airport signages to find your baggage.