Next: On the Fly Bad Pixel Detection for the Chandra X-ray Observatory's Aspect Camera . ... Using these models we have produced a set of simulations of the Chandra point spread function (PSF) which is available to the users via PSF library files. ... The image pixels indicate the number of counts used for each PSF image. ... High resolution library (I) with a step of 1 arcminute between images: contains 1$$m pixel images covering a 1 to +1 arcminutes grid (3 3) about the optical axis. ...