cxi_file = None
    .type = str
    .help = cheetah file used to read in image data(.cxi).
  geom_file = None
    .type = str
    .help = geometry file to be read in for AGIPD detector (.geom).
  xgm_dir = None
    .type = str
    .help = The path to the XGM data
  xgm_addr = None
    .type = str
    .help = The address of the XGM device within raw data, for example \
            'SPB_XTD9_XGM/XGM/DOOCS:output'
  xgm_pulse_num = 120
    .type = int
    .help = The number of pulses written by XGM, up to 1000
  detector_distance = None
    .type = float
    .help = AGIPD Detector distance
  wavelength = None
    .type = float
    .help = AGIPD wavelength override
  mode = vds cxi
    .type = choice
    .optional = False
    .help = Input data file format. VDS: virtual data set. CXI: \
            Cheetah file format.
  sample_name = None
    .type = str
    .help = Descriptive name of the sample

  nexus_details {
    instrument_name = SwissFEL ARAMIS BEAMLINE ESB
      .type = str
      .help = Name of instrument
    instrument_short_name = ESB
      .type = str
      .help = short name for instrument, perhaps the acronym
    source_name = SwissFEL ARAMIS
      .type = str
      .help = Name of the neutron or x-ray storage ring/facility
    source_short_name = SwissFEL ARAMIS
      .type = str
      .help = short name for source, perhaps the acronym
    start_time = None
      .type = str
      .help = ISO 8601 time/date of the first data point collected in UTC, \
              using the Z suffix to avoid confusion with local time
    end_time = None
      .type = str
      .help = ISO 8601 time/date of the last data point collected in UTC, \
              using the Z suffix to avoid confusion with local time. \
              This field should only be filled when the value is accurately \
              observed. If the data collection aborts or otherwise prevents \
              accurate recording of the end_time, this field should be omitted
    end_time_estimated = None
      .type = str
      .help = ISO 8601 time/date of the last data point collected in UTC, \
              using the Z suffix to avoid confusion with local time. \
              This field may be filled with a value estimated before an \
              observed value is available.
    total_flux = None
      .type = float
      .help = flux incident on beam plane in photons per second
  }