1. A self-diagnostic apparatus for a radiographic imaging system, the system including a radiographic source and a camera, the apparatus comprising (a) a scintillator positioned between the optical pathway of the radiographic source and the camera, (b) a resolution target located at the periphery of the scintillator and made of a material that passes at least short wave ultraviolet light; (c) a short wave ultraviolet source positioned in line of sight of the scintillator and target; and, (d) a control system for capturing a self-diagnostic reference image by activating the ultraviolet source, and activating the camera to take an image created by the visible light emitted by the scintillator material when illuminated by the UV light.