The CXC system is equipped with a 264 × 264 pixel pnCDD with a physical pixel size of 48 µm × 48 µm and an imaging area of 161 mm2. The on-chip electronics in combination with a fully column-parallel readout enables low noise operation at about 3 e-/pixel (ENC), and frame rates of up to 1000 Hz. Due to the advanced detector design, the internal potential distribution of the pnCCD can be adjusted by the operation voltages depending on the requirements of the individual experiments. Thus, excellent energy resolution (145 eV for Mn-Kα) and high spatial resolution modes (Δx < 15 µm) are available, as well as high charge handling capacity (up to 400000 e- per pixel), and anti-blooming modes for handling extremely high amounts of signal charges.