Kepler data for all the stars are processed at NASA Ames Research Center. Processing includes calibrating, removing bias (dark level) and smear (the photometer has no shutter) and converting values to fluxes. The multiple pixels making up a single star's psf is not combined, permitting users to perform their own photometry or other forms of analysis. Ensemble-normalized light curves are produced and placed in archives (MAST and NExA).
See instructions for Getting Kepler Light Curves.
Users are able to search data bases to ascertain what data exists on targets of potential interest, and to determine when specific observations will be available (consistent with proprietary restrictions) for access. Data Archive Program (DAP) users as well as unfunded users have access to data in a convenient form via internet.
At the end of the mission, final processing of data for the whole mission and light curves for all of the stars for the full duration of the mission is added to the archive. Light curves have included differential ensemble normalization. The Kepler archive in MAST is expected to be supported for ten years after the end of mission.
[Older tool: The Kepler Candidate Planet Data Explorer has an interactive table and graph plotting functions, but data has not been updated since 2011.]