Capella observation (id: 0121500201001). The color scale represents a logarithmic intensity scale. The dispersion (Beta) axis runs horizontally and increases to the right. All angles (Beta, Xdisp) are in radians. In the top panel the cross dispersion (Xdisp) is along the vertical axis whereas in the bottom panel this is replaced by the CCD recorded photon energy, or PHA, in units of eV. In the bottom panel the low level thresholds are clearly visible. Standard data selections for first order are indicated by the solid purple curves.