This spatial tool has been created by the IDFC Institute, Urban Expansion Observatory  at the Mahatma Education Society and Valectus in Mumbai to allow users to explore in granular detail,
the form that urban growth is taking across major Indian cities.
The data here shows the distribution of built-up area (resolution of 38 metres) and population (250 m) for four time periods: 1975, 1990, 2000 and 2014, as well as night-time lights (750 m) for 2012, 2013, 2014 and 2015. The user can also enable additional layers to visualise how urban growth has been occurring around transit networks and outside of municipal boundaries.
The built-up and population data has been extracted from the Global Human Settlement Layer (see link for more info). The night-time luminosity data has been extracted from the Visible Infrared Imaging Radiometer Suite (VIIRS) by the NOAA National Centers for Environmental Information (see link for more info).    For more details on the background and methodology, please see link.
Basemaps courtesy of Mapbox, Open Street Maps and DigitalGlobe, PostgreSQL 9.5 for data storage, Geoserver 2.11.2 for processing and OpenLayers 3 (JavaScript) for front-end development.    Download data here (link).
For further queries, please contact kshitij.batra@idfcinstitute.org.