For EMOS1/2 and RGS:
These attributes correspond to the default CCD and default node of the instrument in question. In the stage where TIME values are actually computed, timeappend sets the OAL state to the correct CCD explicitly, so the attributes CCDID and/or QUADRANT bear no affect on the eventual outcome of this task. The value of the attribute CCDNODE, on the other hand, does. The setting applied corresponds to the default PRIMARY node; if the user wishes to switch to the redundant node, then s/he should set the instrument properties explicitly via the withsettingsand associated parameters.