Schematics of the detectors comprising the LETA+LETB telescope (shown as a cross-section of circular detectors). Beige portions correspond to the detector mountings, yellow portions indicate inactive silicon, and red sections are detector guard rings. Segments are colored dark blue to indicate their thresholds are raised in each of the dynamic threshold modes (1, 2, and 3, left to right, respectively). The white squares shown on the L2A and L4A dectectors in mode 3 are ‘pixel’ segments.