Aquadopp – s/n 9920

(1) Files

Stage	Filename	Size	Last modified
Raw	9920_recovery.dat	— not checked (no --raw-dir)
Stage1	dune2_1_2026_9920_stage1.nc	1 MB	2026-08-07 08:00 UTC
Stage2	dune2_1_2026_9920_stage2.nc	1 MB	2026-08-07 08:00 UTC
Stage3	dune2_1_2026_9920_stage3.nc	2 MB	2026-08-06 14:37 UTC

(2) Processing history

2026-07-26T18:41:57.504269Z - Processed by SeaSenseLib v0.6.0
Reader NortekAsciiReader
Format Nortek ASCII
Source file 9920_recovery.dat
Stages finalization, mapping, metadata_enrichment, metadata_extraction, unit_handling, validation
2026-07-29T12:10Z clock_drift=-55.0s over deployment (computer=20260725T13:13:20, instrument=20260725T13:14:15)
2026-07-29T12:10Z tilt QC (tilt≥30.0°→suspect, tilt≥50.0°→bad): suspect=1039, bad=0 | BEAM→ENU rotation applied: beam_angle=?° (from YAML), declination=-13.97° (ppigrf IGRF) | QARTOD gross-range+spike: east_velocity_qc=[good=8731, suspect=1087]
north_velocity_qc=[good=8731, suspect=1087]
pressure_qc=[good=9816]
temperature_qc=[good=9816]
up_velocity_qc=[good=8731, suspect=1087]
velocity_beam1_qc=[good=8779, suspect=1039]
velocity_beam2_qc=[good=8779, suspect=1039]
velocity_beam3_qc=[good=8779, suspect=1039]

(3) Time series (full deployment)

line = data; × = suspect; × = bad; + = interpolated.

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(4) Start & end windows — first / last 6 h

Left panel = first 7 h (1 h lead-in + 6 h of record) | Right panel = last 7 h (6 h of record + 1 h tail). ││ orange dashed = auto-detected (pressure-based) suggested deploy/recover time • ││ green dashed = YAML deployment_time / recovery_time • ││ grey = stage 1 raw record (same variable, same units).

Reading the grey background: where the raw stage 1 record is available and uses the same physical units as the stage 2/3 data, it is shown in light grey so you can visually verify that the chosen deployment window captures the in-water period. Cases where grey may be absent:

Sensors without their own pressure (e.g. a microCAT that relies on interpolated pressure from a nearby instrument) — interpolated pressure is only added at stage 3, so stage 1 has no pressure variable and no grey trace appears.
Velocity in beam or XYZ coordinates — if an Aquadopp or ADCP was configured to record in BEAM or XYZ mode, the stage 1 file contains beam/XYZ velocity variables while stage 3 stores ENU velocities; the variable names differ so no grey velocity trace is shown.
Conductivity — raw conductivity units sometimes differ between stage 1 and stage 3 (e.g. mS/cm vs S/m) and the grey trace is suppressed automatically to avoid a misleading scale mismatch.

If the orange vline is absent from the right-hand panel, no pressure-based recovery transition was detected in the final 25 % of the stage 1 record — the suggested recovery time equals the last raw sample. Check the timing table in the mooring summary report for the suggested UTC time.

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(5) Current rose diagrams

ENU panels split by QARTOD flag: good (flag ≤ 2, Blues), suspect (flag 3, Oranges), fail (flag 4, Reds). Direction toward which the current flows; 0° = N, clockwise.

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(6) Particle trajectory

Pseudo-Lagrangian displacement obtained by integrating east/north velocity over time (Euler forward; NaN velocities set to zero). Coloured by temperature. Origin (0, 0) = deployment position; axes in metres.

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(7) Hodograph

East vs north velocity (m s⁻¹). Left: full record. Right: eddy component — raw minus 4-day low-pass (rolling mean).

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(8) Current speed distribution

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(9) Data value distributions

Orange dashed = suspect threshold | Red dotted = fail threshold (gross-range QC). Histogram shows non-bad data only; bad-flagged count noted in red.

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(10) QC flag breakdown

Thresholds applied (as stored in stage 3 file)

Variable	Test	Suspect range / threshold	Fail range / threshold
pressure	gross-range	[-0.5, 7000.0]	[-5.0, 7000.0]
pressure	spike	\|Δ\| > 10.0	\|Δ\| > 50.0
pressure	flat-line	stuck ≥ 3 samples	stuck ≥ 10 samples
temperature	gross-range	[-2.0, 35.0]	[-2.5, 40.0]
temperature	spike	\|Δ\| > 2.0	\|Δ\| > 6.0
roll (tilt)	tilt	>30.0°	>50.0°

Flag counts

Variable	N	Good %	Suspect %	Bad %	Interp. %	Missing %
east_velocity	9,818	88.9	11.1	–	–	–
north_velocity	9,818	88.9	11.1	–	–	–
pressure	9,818	100.0	–	–	–	–
temperature	9,818	100.0	–	–	–	–
up_velocity	9,818	88.9	11.1	–	–	–
velocity_beam1	9,818	89.4	10.6	–	–	–
velocity_beam2	9,818	89.4	10.6	–	–	–
velocity_beam3	9,818	89.4	10.6	–	–	–

(A) NetCDF metadata

Dimension	Size
time	9,818
beam	3

Time-series variables

Variable	Type	Dims	N	Valid	Min / Max	Units	Long name	Standard name	QC flag
amplitude	float32	time, beam	29,454	29,454	63 / 130	counts	Acoustic signal amplitude		–
battery_voltage	float32	time	9,818	9,818	12.1 / 12.4	volts	Battery voltage	battery_voltage	–
current_direction	float32	time	9,818	9,818	0.06001 / 359.9	degrees	Current direction (0=N, clockwise)	direction_of_sea_water_velocity	–
current_speed	float32	time	9,818	9,818	0.005791 / 0.9213	m s-1	Horizontal current speed	sea_water_speed	–
day	int32	time	9,818	9,818	—	1-31			–
depth	float32	time	9,818	9,818	557.3 / 688.1	meters	Depth	depth	–
direction	float32	time	9,818	9,818	0 / 0	degrees	Current direction	direction	–
east_velocity	float32	time	9,818	9,818	-0.8975 / 0.7406	m s-1	Eastward sea water velocity	eastward_sea_water_velocity	✓
error_code	int32	time	9,818	9,818	—				–
heading	float32	time	9,818	9,818	0 / 359.7	degrees	Heading angle	platform_heading_angle	–
hour	int32	time	9,818	9,818	—	0-23			–
magnitude	float32	time	9,818	9,818	0 / 0	m s-1	Current magnitude	magnitude	–
minute	int32	time	9,818	9,818	—	0-59			–
month	int32	time	9,818	9,818	—	1-12			–
north_velocity	float32	time	9,818	9,818	-0.6844 / 0.7064	m s-1	Northward sea water velocity	northward_sea_water_velocity	✓
pitch	float32	time	9,818	9,818	-36.6 / 1.5	degrees	Pitch angle	platform_pitch_angle	–
pressure	float32	time	9,818	9,818	561.2 / 693	dbar	Pressure	sea_water_pressure	✓
roll	float32	time	9,818	9,818	-18.1 / 15.7	degrees	Roll angle	platform_roll_angle	–
second	int32	time	9,818	9,818	—	0-59			–
speed_of_sound	float32	time	9,818	9,818	1449 / 1479	m s-1	Speed of sound in sea water	speed_of_sound_in_sea_water	–
speed_of_sound_used	float32	time	9,818	9,818	1459 / 1488	m s-1			–
status_code	int32	time	9,818	9,818	—				–
temperature	float32	time	9,818	9,818	-0.05 / 7.02	degC	Temperature	sea_water_temperature	✓
up_velocity	float32	time	9,818	9,818	-0.4767 / 0.5587	m s-1	Upward sea water velocity	upward_sea_water_velocity	✓
velocity_beam1	float32	time	9,818	9,818	-0.845 / 0.855	m s-1			✓
velocity_beam2	float32	time	9,818	9,818	-0.319 / 0.424	m s-1			✓
velocity_beam3	float32	time	9,818	9,818	-0.653 / 0.268	m s-1			✓
velocity_x	float32	time	9,818	9,818	-0.6451 / 0.7804	m s-1	X velocity (instrument XYZ frame)		–
velocity_y	float32	time	9,818	9,818	-0.6415 / 0.2879	m s-1	Y velocity (instrument XYZ frame)		–
velocity_z	float32	time	9,818	9,818	-0.7935 / 0.8196	m s-1	Z velocity (instrument XYZ frame)		–
year	int32	time	9,818	9,818	—				–

Scalar metadata variables

Variable	Type	Value	Units	Long name
InstrDepth	int32	519
clock_drift_seconds	float32	-55.0	s	total linear clock drift applied
clock_offset	int32	0	s
end_time	<U16	2026-07-25T11:44
instrument	<U8	aquadopp
serial_number	<U5	9920*
start_time	<U16	2026-07-11T20:30

Global attributes

Attribute	Value
raw_format	nortek-ascii
raw_filename	9920_recovery.dat
raw_filesize_bytes	1743000
raw_mtime_utc	2026-07-25T13:15:40Z
raw_sha256	d9b9cf72d79b2910f614b43ee4839f644f5e46d0c0e5e80f802aecf3d96013e7
raw_metadata_schema	seasenselib/raw-opaque-1.0
raw_metadata	{"schema": "seasenselib/raw-opaque-1.0", "raw_format": "nortek-ascii", "raw_filename": "9920_recovery.dat", "blocks": {"attributes": {"number_of_measurements": "9960", "number_of_checksum_errors": "0", "time_of_first_measurement": "11/07/2026 17:00:00", "time_of_last_measurement": "25/07/2026 12:58:00", "measurement_interval": "120 sec", "sampling_rate": "NORMAL", "average_interval": "3 sec", "measurement_load": "74 %", "transmit_pulse_length": "0.75 m", "blanking_distance": "0.50 m", "compass_update_rate": "5 sec", "diagnostics_measurements": "ENABLED", "diagnostics_-_interval": "43200 sec", "diagnostics_-_number_of_samples": "20", "diagnostics_-_cell_number": "1", "diagnostics_-_number_of_pings": "20", "analog_input_1": "NONE", "raw_magnetometer_output": "OFF", "external_input_2": "NONE", "external_input_3": "NONE", "power_output": "12V", "powerlevel": "HIGH", "coordinate_system": "BEAM", "sound_speed": "MEASURED", "salinity": "35.0 ppt", "distance_between_pings": "10.00 m", "number_of_beams": "3", "number_of_pings_per_burst": "17", "software_version": "1.40.16", "deployment_name": "9920", "wrap_mode": "OFF", "deployment_time": "11/07/2026 17:00:00", "system1": "125", "system2": "55", "system3": "32", "system4": "437", "system5": "65 65 65 0", "system9": "0 0 -1", "system10": "0 -1 1 0", "system11": "0 -1 -1 0", "system12": "0", "system13": "1481 259 7128 10862", "system14": "-16627 934 10828 -128", "system16": "0 0 0 0", "system17": "5461", "system22": "43200", "system28": "20", "system29": "1", "system30": "20", "system31": "15618 15646 15673 15699", "system42": "0", "system43": "0", "system44": "0", "system45": "6", "start_command": "Recorder deployment", "crc_download": "ON", "serial_number": "A6L 5229", "hardware_revision": "4 (E)", "recorder_size": "9 MByte", "firmware_version": "3.42", "velocity_range": "NORMAL", "sync_signal_data_out_delay": "0 sec", "sync_signal_power_down_delay": "0 sec", "pressure_sensor": "YES", "compass": "YES", "tilt_sensor": "YES", "system_1": "1", "head_frequency": "2000 kHz", "pressure_sensor_calibration": "0 12 64848 6424", "system7": "-19553 440 11845 -102", "system8": "0 0 -1", "system15": "32471 722 -750 722", "system18": "3600", "system19": "3600", "system20": "10000"}, "calibration": {"transformation_matrix": [[0.7356, -0.3677, -0.3677], [0.0, -0.637, 0.637], [0.7888, 0.7888, 0.7888]], "magnetometer_calibration_matrix": [[0.991, 0.022, -0.0229], [0.022, 1.0, -0.0062], [-0.018, 0.0304, 0.9507]], "compass_hard_iron_calibration": [5, -90, 10]}, "configuration": null, "other": {"global_attributes": {"coordinate_system": "BEAM"}}}, "variables": {"month": {"column_number": "1", "original_name": "Month", "units": "1-12"}, "day": {"column_number": "2", "original_name": "Day", "units": "1-31"}, "year": {"column_number": "3", "original_name": "Year"}, "hour": {"column_number": "4", "original_name": "Hour", "units": "0-23"}, "minute": {"column_number": "5", "original_name": "Minute", "units": "0-59"}, "second": {"column_number": "6", "original_name": "Second", "units": "0-59"}, "error_code": {"column_number": "7", "original_name": "Error code"}, "status_code": {"column_number": "8", "original_name": "Status code"}, "velocity_beam1": {"column_number": "9", "original_name": "Velocity (Beam1\|X\|East)", "units": "m/s"}, "velocity_beam2": {"column_number": "10", "original_name": "Velocity (Beam2\|Y\|North)", "units": "m/s"}, "velocity_beam3": {"column_number": "11", "original_name": "Velocity (Beam3\|Z\|Up)", "units": "m/s"}, "amplitude_beam1": {"column_number": "12", "original_name": "Amplitude (Beam1)", "units": "counts"}, "amplitude_beam2": {"column_number": "13", "original_name": "Amplitude (Beam2)", "units": "counts"}, "amplitude_beam3": {"column_number": "14", "original_name": "Amplitude (Beam3)", "units": "counts"}, "battery_voltage": {"column_number": "15", "original_name": "Battery voltage", "units": "V"}, "speed_of_sound": {"column_number": "16", "original_name": "Soundspeed", "units": "m/s"}, "speed_of_sound_used": {"column_number": "17", "original_name": "Soundspeed used", "units": "m/s"}, "heading": {"column_number": "18", "original_name": "Heading", "units": "degrees"}, "pitch": {"column_number": "19", "original_name": "Pitch", "units": "degrees"}, "roll": {"column_number": "20", "original_name": "Roll", "units": "degrees"}, "pressure": {"column_number": "21", "original_name": "Pressure", "units": "dbar"}, "depth": {"column_number": "22", "original_name": "Pressure", "units": "m"}, "temperature": {"column_number": "23", "original_name": "Temperature", "units": "degrees C"}, "analog_input_1": {"column_number": "24", "original_name": "Analog input 1"}, "analog_input_2": {"column_number": "25", "original_name": "Analog input 2"}, "magnitude": {"column_number": "26", "original_name": "Speed", "units": "m/s"}, "direction": {"column_number": "27", "original_name": "Direction", "units": "degrees"}}}
processor_name	SeaSenseLib
processor_version	0.6.0
processing_level	L1
processor_module	seasenselib.readers.nortek_ascii_reader
processor_module_name	Nortek ASCII
processor_module_key	nortek-ascii
processor_runtime	CPython
processor_runtime_version	3.11.7
processor_execution_time_utc	2026-07-26T18:41:57.5Z
processor_machine	EFWmac14-2.local
processor_os	Darwin 25.5.0
date_created	2026-07-26T18:41:57.5Z
date_modified	2026-07-26T18:41:57.5Z
Conventions	CF-1.13
coordinate_system	ENU
nortek_pressure_cal_number_of_beams	3
nortek_pressure_cal_system5	65 65 65 0
nortek_pressure_cal_system7	-19553 440 11845 -102
nortek_pressure_cal_	0 0 0 0
nortek_pressure_cal_system8	0 0 -1
nortek_pressure_cal_system9	0 0 -1
nortek_pressure_cal_system10	0 -1 1 0
nortek_pressure_cal_system11	0 -1 -1 0
nortek_pressure_cal_system13	1481 259 7128 10862
nortek_pressure_cal_system14	-16627 934 10828 -128
nortek_pressure_cal_system15	32471 722 -750 722
nortek_pressure_cal_system16	0 0 0 0
nortek_pressure_cal_system17	5461
nortek_pressure_cal_system18	3600
nortek_pressure_cal_system19	3600
nortek_pressure_cal_system20	10000
nortek_T_M11	0.7356
nortek_T_M12	-0.3677
nortek_T_M13	-0.3677
nortek_T_M21	0.0
nortek_T_M22	-0.637
nortek_T_M23	0.637
nortek_T_M31	0.7888
nortek_T_M32	0.7888
nortek_T_M33	0.7888
nortek_pointing_down	False
mooring_name	dune2
waterdepth	745
longitude	-28 01.234
latitude	65 48.405
deployment_latitude	00 00.000 N
deployment_longitude	000 00.000 W
deployment_time	2026-07-11T20:30
seabed_latitude	00 00.000 N
seabed_longitude	000 00.000 W
recovery_time	2026-07-25T11:44
qc_convention	OceanSITES reference table 2
suggested_deployment_time	2026-07-11T20:30:00
suggested_recovery_time	2026-07-25T11:44:00
suggested_window_source	pressure_pmin10dbar
suggested_window_clock	raw_instrument_clock
suggested_deployment_time_utc	2026-07-11T20:30:00
suggested_recovery_time_utc	2026-07-25T11:43:05
stage1_first_nonnull	2026-07-11T17:00:00
stage1_last_nonnull	2026-07-25T12:58:00
stage1_time_start	2026-07-11T17:00:00
stage1_time_end	2026-07-25T12:58:00
yaml_deployment_time	2026-07-11T20:30:00
yaml_recovery_time	2026-07-25T11:44:00
stage2_source_file	dune2_1_2026_9920_stage2.nc
stage2_source_mtime	2026-07-29T12:10:34Z
stage2_source_sha256	a45e2284
magnetic_declination	-13.965613674756257
magnetic_declination_units	degrees_east
magnetic_declination_method	ppigrf IGRF at deployment midpoint
magnetic_declination_lat	65.73188333333333
magnetic_declination_lon	-26.2
magnetic_declination_latlon_source	mooring YAML (latitude/longitude)
coordinate_system_source	rotated from XYZ by oceanarray stage3
tilt_suspect_threshold	30.0
tilt_fail_threshold	50.0

Not applicable to this instrument: Velocity, T-S diagram, Current roses, Analog channels.

Aquadopp — s/n 9920

(1) Files

(2) Processing history

(3) Time series (full deployment)

(4) Start & end windows — first / last 6 h

(5) Current rose diagrams

(6) Particle trajectory

(7) Hodograph

(8) Current speed distribution

(9) Data value distributions

(10) QC flag breakdown

Thresholds applied (as stored in stage 3 file)

Flag counts

(A) NetCDF metadata

Time-series variables

Scalar metadata variables

Global attributes