I stumbled upon a site -- n2yo.com -- that helps you track real time the satellites that are orbiting the earth.
One of the pages on the site says it's a website providing mainly satellite tracking Services. "The software used for tracking is using mainly space surveillance data provided by "Space Track", a website consisting of a partial catalog of observations collected by the US Space Surveillance Network, operated by US Air Force Space Command (AFSPC). AFSPC does not make any warranties as to the accuracy or completeness of the data provided..." (Source)
I could locate Cartosat-2A here.