A detector slice circuit for a CT imaging system may include a plurality of sensors for detecting photons passing through an object and a first electronic component configured to determine an energy of photons detected by the plurality of sensors and generate photon count data, which may be a count of detected photons in one or more energy bins. The detector slice circuit may further include a second electronic component configured to receive the photon count data from the first electronic component and is clocked at a first clock rate； a local memory storage configured to receive the photon count data from the second electronic component at the first clock rate and to output the photon count data at a second clock rate.
