  We employ electrostatic conversion drift calculations to match CCD pixel
signal covariances observed in flat field exposures acquired using candidate
sensor devices for the LSST Camera. We thus constrain pixel geometry
distortions present at the end of integration, based on signal images recorded.
We use available data from several operational voltage parameter settings to
validate our understanding. Our primary goal is to optimize flux point-spread
function (FPSF) estimation quantitatively, and thereby minimize sensor-induced
errors which may limit performance in precision astronomy applications. We
consider alternative compensation scenarios that will take maximum advantage of
our understanding of this underlying mechanism in data processing pipelines
currently under development.
  To quantitatively capture the pixel response in high-contrast/high dynamic
range operational extrema, we propose herein some straightforward laboratory
tests that involve altering the time order of source illumination on sensors,
within individual test exposures. Hence the word {\it hysteretic} in the title
of this paper.
