According to the discussion paper its just public sector data which they go on to define as
"Public sector data is data held by the Australian government as it fulfils its various functions. Government agencies collect, hold and use
data on topics as diverse as weather patterns, who is coming and going from Australia, and administrative data about access to government services by both businesses and individuals.
Data means any facts, statistics, instructions, concepts, or other information in a form capable of being communicated, analysed or processed (whether by an individual or by other means including a computer, electronic and automated means). Data can exist at different levels of detail, including aggregated to the category or population or at the more detailed unit record."
I’m sure theres more to it but at this time of the morning I havent the capacity for reading all of it.