A radiation detector assembly is provided that includes a semiconductor detector, plural pixelated anodes disposed on a surface of the semiconductor detector, and at least one processor. Each pixelated anode generates a primary signal responsive to reception of a photon by the pixelated anode. The at least one processor is operably coupled to the pixelated anodes, and determines when a primary signal is generated by a given pixelated anode. Responsive to determining the presence of the primary signal in the given pixelated anode, the at least one processor disconnects the given pixelated anode from an electrical source, wherein a re-directed primary signal is directed to a surrounding pixelated anode of the given pixelated anode. The at least one processor identifies the surrounding pixelated anode, and assigns an event for the primary signal to a pre-determined sub-pixel portion of the given pixelated anode based on the identified surrounding pixelated anode.