NSA/MPL/C1 - Detector Failure

Beginning 12/25, the signal return displayed serious aliasing, reflection, or ringing of 
the detector, with a highly repetitive pattern repeating six or more times within the 
lowest 15 km.  On 01/02, the detector became very difficult to put into any type of operating 
condition. When it did operate, the "aliased" signal pattern was still present.

The detector was replaced.

• background_signal_std
• laser_temp
• energy_monitor
• signal_return
• background_signal

NSA/MPL/C1 - Missing data

System was down for detector replacement.

• base_time
• time
• laser_temp
• range_offset
• lon
• signal_return
• dead_time_corrected
• Pressure, associated geometric height, at altitude, NGM model output(height)
• range
• lat
• shots_per_avg
• scope_temp
• polarization_control_voltage
• Preliminary cloud base height above ground level(preliminary_cbh)
• alt
• max_altitude
• time_offset
• background_signal_std
• range_bin_width
• num_bins
• detector_temp
• pulse_rep
• range_bin_time
• polarization_control
• range_bins
• energy_monitor
• background_signal
• num_channels

NSA/MPL/C1 - No cross polarized data

The cross polarizor was not functioning so there is no cross polarized data.  All data 
during the specified period is circularly polarized.

• signal_return

NSA/MPL/C1 - Bad Cross-Polarized data

The polarizer box was not recycled when the system was rebooted; thus only circularly 
polarized light was being emitted.  Ignore all cross polarized data.

• Attenuated backscatter, cross pol(signal_return_cross_pol)
• background_signal_cross_pol
• aqc_signal_return_cross_pol
• Preliminary cloud base height above ground level, cross-pol(preliminary_cbh_cross_pol)
• background_signal_std_cross_pol
• polarization_control_voltage_cross_pol

• polarization_control_voltage
• signal_return

• Attenuated backscatter, cross pol(signal_return_cross_pol)
• polarization_control_voltage_cross_pol
• aqc_signal_return_cross_pol
• background_signal_std_cross_pol
• background_signal_cross_pol
• Preliminary cloud base height above ground level, cross-pol(preliminary_cbh_cross_pol)

NSA/MPL/C1/C2 - No cross polarization data

Even though the polarization voltage was reported as switching between circular and cross 
polarization states, there was no cross polarization taking place because the 
polarization box had not been recycled following a system reboot.

You will not be able to create depolarization values.  However all other processes, such 
as cloud base determination should be ok.

• Attenuated backscatter, cross pol(signal_return_cross_pol)
• background_signal_cross_pol
• aqc_signal_return_cross_pol
• Preliminary cloud base height above ground level, cross-pol(preliminary_cbh_cross_pol)
• background_signal_std_cross_pol
• polarization_control_voltage_cross_pol

• polarization_control_voltage
• signal_return

• Attenuated backscatter, cross pol(signal_return_cross_pol)
• polarization_control_voltage_cross_pol
• aqc_signal_return_cross_pol
• nsamples_cross_pol_average
• background_signal_std_cross_pol
• background_signal_cross_pol
• Preliminary cloud base height above ground level, cross-pol(preliminary_cbh_cross_pol)