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The 3.2 gigapixel LSST camera, an array of 189 thick fully-depleted CCDs,will repeatedly image the southern sky and accomplish a wide variety of sciencegoals. However, its trove of tens of billions of object images impliesstringent requirements on systematic biases imprinted during shift-and-stareCCD observation. In order to correct for these biases which, withoutcorrection, violate requirements on weak lensing precision, we investigate CCDsystematics using both simulations of charge transport as well as with a uniquebench-top optical system matched to the LSST's fast f/1.2 beam. By illuminatingsingle CCDs with realistic scenes of stars and galaxies and then analyzingthese images with the LSST data management pipelines, we can characterize thesurvey's imaging performance well before the camera's first light. We presentmeasurements of several CCD systematics under varying conditions in thelaboratory, including the brightness-dependent broadening of star and galaxyimages, charge transport anomalies in the silicon bulk as well as the edges,and serial deferred charge. Alongside these measurements, we also present thedevelopment and testing of physics-based models which inform corrections ormitigation strategies for these systematics. Optimization of the CCD surveyoperation under a variety of realistic observational conditions, includingsystematic effects from the optics, clocking, sky brightness, and imageanalysis, will be critical to achieve the LSST's goals of precision astronomyand cosmology.

Characterization of LSST CCDs Using Realistic Images, Before First Light