Plot ?	Symb ?	Source *	Average ?			Thresholds ?		N_ data	QC1 parameter	Data downloads	Remarks
			method	value	unit	method	value
1	•	QC1DB	MEDIAN	247	ADU	VAL	240,260	86	median_master	this | last_yr | all	median BIAS level (Fast readout mode)
2	•	QC1DB	MEDIAN	5.04	e-	VAL	4.1,5.0	86	sigma_raw	this | last_yr | all	RON in single raw frame downloaded data come in ADU (=e-/2.30)
3	•	QC1DB	MEDIAN	2.74	e-	VAL	2.25,2.75	86	sigma_master	this | last_yr | all	RON in master frame downloaded data come in ADU (=e-/2.30)
4	x	QC1DB	MEDIAN	0.142	ADU	VAL	0.05,0.25	86	struct_row	this | last_yr | all	structure of master in X direction
5	x	QC1DB	MEDIAN	0.47	ADU	VAL	0.3,0.6	86	struct_col	this | last_yr | all	structure of master in Y direction
6	•	QC1DB	MEDIAN	5	N	VAL	0,1000	86	bpm_npix	this | last_yr | all	number of bad pixels
*Data sources: QC1DB: QC1 database; LOCAL: local data source

Plot 1 scores: 3|
data source:	giraffe_bias (QC1 database)
dataset:	median_master	•
median:	247	ADU
fixed thresholds:	240...260	ADU
N_data plotted:	86
[click plot for closeup]

Plot 2 scores: 3|
data source:	giraffe_bias (QC1 database)
dataset:	sigma_raw	•
median:	5.04	e-
fixed thresholds:	4.1...5.0	e-
N_data plotted:	86
[click plot for closeup]

Plot 3 scores: 3|
data source:	giraffe_bias (QC1 database)
dataset:	sigma_master	•
median:	2.74	e-
fixed thresholds:	2.25...2.75	e-
N_data plotted:	86
[click plot for closeup]

Plot 4 scores: 3|
data source:	giraffe_bias (QC1 database)
dataset:	struct_row	x
median:	0.142	ADU
fixed thresholds:	0.05...0.25	ADU
N_data plotted:	86
[click plot for closeup]

Plot 5 scores: 3|
data source:	giraffe_bias (QC1 database)
dataset:	struct_col	x
median:	0.47	ADU
fixed thresholds:	0.3...0.6	ADU
N_data plotted:	86
[click plot for closeup]

Plot 6 scores: 3|
data source:	giraffe_bias (QC1 database)
dataset:	bpm_npix	•
median:	5	N
fixed thresholds:	0...1000	N
N_data plotted:	86
[click plot for closeup]

This is the trending plot for the GIRAFFE QC parameters derived from BIAS frames, fast readout mode. This mode is operational since the begin of P86 (October 2010). It is used for Argus observations.

These plots describe:
1. the BIAS level in masterbias frames,
2. the read noise (RON) of a single raw frame,
3. the read noise (RON) of a master frame,
4. the collapsed structure of a masterbias in X direction,
5. the collapsed structure in Y direction,
6. the number of bad pixels.

There is sometimes pick noise visible in this readout mode.

Find more information about GIRAFFE BIAS frames here.

Other QC parameters related to detector properties (like contamination, linearity, gain) are trended here.