D Q R Report

DQRID : D060531.4

Start Date	Start Time	End Date	End Time	Data Quality Metric
05/01/2006	1700	07/31/2006	2359	Incorrect

Subject:	SGP/MFRSR/E1 - 420nm and 500nm channels flat-lining
DataStreams:	sgpmfrsrE1.a0, sgpmfrsrlangleyE1.c1, sgpmfrsrE1.b1, sgpmfrsrlangplotE1.c1
Description:	Channel 415 and sometimes 500 are over-ranging, i.e., the signal overloads the sensor and the result is flat data bounding solar noon. Typically the affected time range is between 1730 and 2000 UTC, though on partly cloudy days the time range expands slightly. Global, diffuse and direct data will all be affected and should not be used when the signal is over-ranging. Only channels 415 and 500 are affected.
Suggestions:	Look at daily plots and set values to missing when over-ranging is occurring
Measurements:	sgpmfrsrlangleyE1.c1: barnard_good_fraction_filter1 barnard_good_fraction_filter2 barnard_error_slope_filter2 barnard_error_slope_filter1 michalsky_badflag_filter1 michalsky_optical_depth_filter2 michalsky_optical_depth_filter1 barnard_solar_constant_sdist_filter1 michalsky_solar_constant_filter1 michalsky_solar_constant_filter2 barnard_badflag_filter1 michalsky_standard_deviation_filter2 barnard_badflag_filter2 michalsky_standard_deviation_filter1 barnard_number_points_filter1 barnard_number_points_filter2 barnard_optical_depth_filter1 michalsky_number_points_filter2 barnard_optical_depth_filter2 michalsky_number_points_filter1 barnard_solar_constant_sdist_filter2 barnard_error_fit_filter1 barnard_error_fit_filter2 michalsky_badflag_filter2 michalsky_solar_constant_sdist_filter2 michalsky_solar_constant_sdist_filter1 michalsky_good_fraction_filter2 michalsky_good_fraction_filter1 more sgpmfrsrlangplotE1.c1: michalsky_lnI_filter1 michalsky_lnI_filter2 barnard_lnI_filter2 barnard_lnI_filter1 michalsky_rejected_filter1 michalsky_rejected_filter2 barnard_rejected_filter1 barnard_rejected_filter2 more sgpmfrsrE1.a0: diffuse_hemisp_narrowband_filter1 direct_horizontal_narrowband_filter2 direct_horizontal_narrowband_filter1 diffuse_hemisp_narrowband_filter2 hemisp_narrowband_filter2 hemisp_narrowband_filter1 more sgpmfrsrE1.b1: hemisp_narrowband_filter2 hemisp_narrowband_filter1 direct_normal_narrowband_filter2 direct_normal_narrowband_filter1 diffuse_hemisp_narrowband_filter1 direct_horizontal_narrowband_filter2 direct_horizontal_narrowband_filter1 diffuse_hemisp_narrowband_filter2 more

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