1. A computed-tomography (CT) apparatus, comprising: a plurality of stationary photon-counting detectors configured to capture incident X-ray photons emitted from an X-ray source to obtain projection data; and a processing circuit configured to determine which photon-counting detectors of the plurality of stationary photon-counting detectors were polarized when the projection data was obtained, and assign a weight of zero to the projection data corresponding to the polarized photon-counting detectors during image reconstruction.