National Sample Survey Organization is.
The National Sample Survey (NSS) is one of the oldest continuing household sample surveys in the developing world. The survey is conducted on a regular basis by the National Sample Survey Organisation (NSSO), India's premier data collection agency. The National Sample Survey Office(NSSO) in India is a unique setup to carry out surveys on socio-economic, demographic, agricultural and industrial subjects for collecting data from house holds and from enterprises located in villages and in the towns. NSSO round covers socio-economic statistical data about India like Employment and Unemployment, housing condition, domestic tourism, Drinking water, sanitation, Land and livestock holdings, Social consumption, health, Domestic tourism expenditure, Labour Force, Construction, Industries, Manufacture, etc.