<xs:documentation>This object contains the attributes of raw data acquired by the DAS measurement instrument. This includes the raw data unit, the location of the raw data acquired along the fiber optical path, and information about times and (optional) triggers. Note that the actual raw data samples, times and trigger times arrays are not present in the XML files but only in the HDF5 files because of their size. The XML files only contain references to locate the corresponding HDF files, which contain the actual raw samples, times, and (optional) trigger times.</xs:documentation>