NSA/HSRL/C1 - Laser failure

Starting at around 08:00 UTC on July 20, the HSRL laser output stopped. The laser was 
repaired by UW SSEC staff on Sept 10 but instrument work continued until Sept 15 22:00 UTC.  
All lidar profiles in this time period should be deemed "bad" and not used.

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• Calibration times(cal_time)
• Number of seeded shots(num_seeded_shots)
• Particulate extinction cross section per unit volume(beta_a)
• Combined gain factor(combined_gain)
• Cross polarization dark count(c_pol_dark_count)
• Profile mask(profile_mask)
• Low gain combined dark count(combined_dark_count_lo)
• Laser seeding quality(seed_quality)
• Molecular in molecular calibration(lidar_calibration_Cmm)
• High gain combined dark count(combined_dark_count_hi)
• Standard deviation of backscatter cross section (photon counting)(beta_a_backscatter_std)
• Molecular in combined calibration(lidar_calibration_Cmc)
• Overlap correction(geo_cor)
• Molecular calibration pulse(mol_cal_pulse)
• Particulate backscatter cross section per unit volume(beta_a_backscatter)
• Calibration time vector(cal_time_vector)
• Trigger of calibration change(cal_trigger)
• Transmitted energy(transmitted_energy)
• Molecular photon counts(molecular_counts)
• Combined merge threshold(combined_merge_threshold)
• Attenuated molecular return(atten_beta_r_backscatter)
• Low gain combined photon counts(combined_counts_lo)
• Circular depolarization ratio for particulate(depol)
• Laser frequency quality(frequency_quality)
• Aerosol in molecular calibration(lidar_calibration_Cam)
• High gain combined photon counts(combined_counts_hi)
• Optical depth of particulate(od)
• Laser lock quality(lock_quality)
• Molecular dark count(mol_dark_count)
• Cross polarized photon counts(cross_counts)