Quality control coding - Revision history

Ilker at 09:18, 28 August 2023

2023-08-28T09:18:00Z

← Older revision		Revision as of 09:18, 28 August 2023
Line 22:		Line 22:
	\| Bit 0		\| Bit 0
	\| Poor figure of merit		\| Poor figure of merit
	\| 1.05		\| 1.15
	\| 0		\| 0
	\| 0		\| 0

Ilker at 09:17, 28 August 2023

2023-08-28T09:17:47Z

← Older revision		Revision as of 09:17, 28 August 2023
Line 22:		Line 22:
	\| Bit 0		\| Bit 0
	\| Poor figure of merit		\| Poor figure of merit
	\| 2		\| 1.05
	\| 0		\| 0
	\| 0		\| 0
Line 29:		Line 29:
	\| Bit 1		\| Bit 1
	\| Large fraction of data with spikes		\| Large fraction of data with spikes
	\| 40%		\| 5%
	\| 0		\| 0
	\| 0		\| 0
Line 36:		Line 36:
	\| Bit 2		\| Bit 2
	\| Anomalously large disagreement between dissipation estimates from probes		\| Anomalously large disagreement between dissipation estimates from probes
	\| ~~N/A~~		\| 2.772
	\| 1		\| 1
	\| 4		\| 4
Line 43:		Line 43:
	\| Bit 3		\| Bit 3
	\| Too many iterations of despiking routine		\| Too many iterations of despiking routine
	\| ~~To be confirmed~~		\| 8
	\| 0		\| 0
	\| 0		\| 0

Ilker at 10:40, 1 February 2023

2023-02-01T10:40:17Z

← Older revision		Revision as of 10:40, 1 February 2023
Line 21:		Line 21:
	\| 1		\| 1
	\| Bit 0		\| Bit 0
	\| ~~if FOM > FOM_limit~~		\| Poor figure of merit
	\| 2		\| 2
	\| 0		\| 0
Line 28:		Line 28:
	\| 2		\| 2
	\| Bit 1		\| Bit 1
	\| ~~if despike_fraction > despike_fraction_limit~~		\| Large fraction of data with spikes
	\| 40%		\| 40%
	\| 0		\| 0
Line 35:		Line 35:
	\| 4		\| 4
	\| Bit 2		\| Bit 2
	\| ~~if \|log(e_max)-log(e_min)\|> diss_ratio_limit X \sigma_{\ln\varepsilon}~~		\| Anomalously large disagreement between dissipation estimates from probes
	\| N/A		\| N/A
	\| 1		\| 1
Line 42:		Line 42:
	\| 8		\| 8
	\| Bit 3		\| Bit 3
	\| ~~if despike_iterations > despike_iterations_limit~~		\| Too many iterations of despiking routine
	\| To be confirmed		\| To be confirmed
	\| 0		\| 0
Line 49:		Line 49:
	\| 16		\| 16
	\| Bit 4		\| Bit 4
	\| if variance resolved ~~less than a threshold~~		\| Insufficient variance resolved
	\| 50%		\| 50%
	\| 1		\| 1

Ilker at 10:36, 1 February 2023

2023-02-01T10:36:33Z

← Older revision		Revision as of 10:36, 1 February 2023
Line 90:		Line 90:
	The reasons for a failure can be decoded by breaking the value of Q down to its powers of 2.		The reasons for a failure can be decoded by breaking the value of Q down to its powers of 2.

			-----------------------------
			return to [[Flow chart for shear probes]]

	[[Category: Shear probes]]		[[Category: Shear probes]]

Amelie Meyer at 20:53, 3 June 2022

2022-06-03T20:53:03Z

← Older revision		Revision as of 20:53, 3 June 2022
Line 5:		Line 5:
	'''Shear-probe quality-control flags'''		'''Shear-probe quality-control flags'''

	The Q (quality control) flags associated with shear-probe measurements are ~~not compatible~~ with ~~the Ocean Sites [http~~://~~www~~.~~oceansites~~.~~org~~/ ~~Ocean Sites] for quality control (QC) coding.~~		The Q (quality control) flags associated with shear-probe measurements are bitwise flags with boolean values which are CF compliant. More information available here: https://mplnet.gsfc.nasa.gov/about-flags

	Every dissipation estimate from every probe must have Q flag.		Every dissipation estimate from every probe must have Q flag.

Amelie Meyer at 19:54, 3 June 2022

2022-06-03T19:54:24Z

← Older revision		Revision as of 19:54, 3 June 2022
Line 15:		Line 15:
	! Bit		! Bit
	! Flag Meaning		! Flag Meaning
	\| Example threshold value		! Example threshold value
	\| Ex: True =1 / False =0		\| Ex: True =1 / False =0
	\| Ex: Q value		\| Ex: Q value

Amelie Meyer at 19:53, 3 June 2022

2022-06-03T19:53:42Z

← Older revision		Revision as of 19:53, 3 June 2022
Line 1:		Line 1:
	'''In progress		'''[In progress]
	'''		'''

Line 15:		Line 15:
	! Bit		! Bit
	! Flag Meaning		! Flag Meaning
	! Example threshold value		\| Example threshold value
	! Ex: True =1 / False =0		\| Ex: True =1 / False =0
	! Ex: Q value		\| Ex: Q value
	\|-		\|-
	\| 1		\| 1

Amelie Meyer at 19:52, 3 June 2022

2022-06-03T19:52:40Z

← Older revision		Revision as of 19:52, 3 June 2022
Line 75:		Line 75:
	\| 0		\| 0
	\|-		\|-
			\|
			\|
			\|
			\|
			\|
	\| Final Q = 20		\| Final Q = 20
	\|}		\|}

Amelie Meyer at 19:52, 3 June 2022

2022-06-03T19:52:02Z

← Older revision		Revision as of 19:52, 3 June 2022
Line 74:		Line 74:
	\| 0		\| 0
	\| 0		\| 0
			\|-
	\| Final Q = 20		\| Final Q = 20
	\|}		\|}

Amelie Meyer at 19:51, 3 June 2022

2022-06-03T19:51:13Z

← Older revision		Revision as of 19:51, 3 June 2022
Line 17:		Line 17:
	! Example threshold value		! Example threshold value
	! Ex: True =1 / False =0		! Ex: True =1 / False =0
			! Ex: Q value
	\|-		\|-
	\| 1		\| 1
Line 22:		Line 23:
	\| if FOM > FOM_limit		\| if FOM > FOM_limit
	\| 2		\| 2
			\| 0
	\| 0		\| 0
	\|-		\|-
Line 28:		Line 30:
	\| if despike_fraction > despike_fraction_limit		\| if despike_fraction > despike_fraction_limit
	\| 40%		\| 40%
			\| 0
	\| 0		\| 0
	\|-		\|-
Line 35:		Line 38:
	\| N/A		\| N/A
	\| 1		\| 1
			\| 4
	\|-		\|-
	\| 8		\| 8
Line 40:		Line 44:
	\| if despike_iterations > despike_iterations_limit		\| if despike_iterations > despike_iterations_limit
	\| To be confirmed		\| To be confirmed
			\| 0
	\| 0		\| 0
	\|-		\|-
Line 47:		Line 52:
	\| 50%		\| 50%
	\| 1		\| 1
			\| 16
	\|-		\|-
	\| 32		\| 32
Line 52:		Line 58:
	\| manual flag to be defined by user		\| manual flag to be defined by user
	\| N/A		\| N/A
			\| 0
	\| 0		\| 0
	\|-		\|-
Line 58:		Line 65:
	\| manual flag to be defined by user		\| manual flag to be defined by user
	\| N/A		\| N/A
			\| 0
	\| 0		\| 0
	\|-		\|-
Line 65:		Line 73:
	\| N/A		\| N/A
	\| 0		\| 0
			\| 0
			\| Final Q = 20
	\|}		\|}

Line 70:		Line 80:

	The Q flags are combined by their addition.		The Q flags are combined by their addition.
	For example a Q value of 3 means that the dissipation estimated failed both ~~FOM_limit~~ test and the ~~despike_fraction~~ test.		For example a Q value of 20 means that the dissipation estimated failed both dissipation ratio limit test and the resolved variance test.
	A value of 15 means that all tests failed.		A value of 255 means that all tests failed.
	~~A failure of any one test (<math>Q\ne0</math>) means that a dissipation test should not be trusted~~.
	The reasons for a failure can be decoded by breaking the value of Q down to its powers of 2.		The reasons for a failure can be decoded by breaking the value of Q down to its powers of 2.


	[[Category: Shear probes]]		[[Category: Shear probes]]