Data Quality Report

Data Quality Report for Order ID: 187608
User ID: eluke Date completed: 2017-09-08

All DQRs

DQR ID	Subject	Affected Data Streams	Data Quality Metric
D170731.1	ENA/CCN/C1 - Instrument in safe mode	enaaosccn100C1.a1	Incorrect

DQR ID: D170731.1 (Back to Top)

Start Date	Start Time	End Date	End Time	Data Quality Metric
2017-07-28	23:00:00	2017-07-29	00:00:10	Incorrect
2017-07-29	07:00:00	2017-07-29	08:00:00	Incorrect

Subject:	ENA/CCN/C1 - Instrument in safe mode
Affected Datastreams:	enaaosccn100C1.a1
Description	The instrument went into safe mode due to low counts. The data saved in safe mode is incorrect, as the instrument wasn't operating in the normal mode because aerosol concentration was very low.
Measurements	CCN_T_set_TEC3 (AOS CCN set point for temperature at bottom of column) CCN_temperature_gradient (Temperature difference between CCN_t_set_TEC3 and CCN_t_set_TEC1) CCN_T_nafion (AOS CCN Nafion temperature) N_CCN_bin_number (AOS bin number of lowest channel of OPC include in summation of N_CCN) CCN_alarm_code (CCN alarm code expressed as a summation of powers of 2. 0 indicates no detected problem) CCN_T_inlet (AOS CCN temperature of sample air at entrance to instrument) CCN_T_inlet_set (AOS CCN set point temperature for the inlet manifold) CCN_laser_current (AOS CCN OPC laser current) CCN_P_sample (AOS CCN sample pressure) CCN_Q_sample (AOS CCN volumetric flowrate of sample air) N_CCN (AOS number concentration of CCN) CCN_Q_sheath (AOS CCN volumetric flowrate of sheath air) CCN_T_read_TEC1 (AOS CCN observed temperature at top of column) CCN_temp_unstable (AOS CCN logical value, indicating whether the instrument has reached thermal gradient stabilization and is within 0.4 degrees C of the set point) CCN_overflow (Number of particles that are larger than 10um) CCN_T_nafion_set (AOS CCN set temperature for the Nafion humidifier) CCN_first_stage_monitor_voltage (First stage monitor voltage) size_bin_bounds (Droplet bin bounds) N_CCN_dN (AOS CCN droplet count by bin size) CCN_T_read_TEC2 (AOS CCN observed temperature at middle of column) CCN_T_set_TEC1 (AOS CCN set point for temperature at top of column) CCN_baseline_monitor (AOS CCN voltage used by DMT for OPC diagnostic purposes) CCN_T_OPC (AOS CCN temperature of the optical particle counter) CCN_T_read_TEC3 (AOS CCN (read) temperature at bottom of column) CCN_OPC_set (AOS CCN set point temperature for the optical particle counter (OPC)) CCN_T_set_TEC2 (AOS CCN set point for temperature at middle of column) size_bin (Size bins for CCN droplet count) CCN_T_sample (AOS CCN temperature of sample air entering the column) CCN_supersaturation_set_point (AOS CCN sample supersaturation set point value reported by instrument) CCN_proportional_valve_voltage (CCN Proportional valve voltage)