An imaging apparatus (400) includes a detector array (412) with at least one detector tile (418). The detector tile includes a photosensor array (422) with a two dimensional array of individual photosensitive detector pixels (424) located within a non-photosensitive area (426). The imaging apparatus also includes readout electronics (432) coupled to the photosensor array and including individual readout channel wells (602, 604) corresponding to the individual detector pixels. The imaging apparatus also includes an anti-aliasing filter (800) for a detector pixel that is located in at least one of a region of the photosensor array corresponding to the detector pixel or a region of the readout electronics corresponding to the detector pixel.