Plot ?	Symb ?	Source *	Average ?			Thresholds ?		N_ data	QC1 parameter	Data downloads	Remarks
			method	value	unit	method	value
1	•	QC1DB	MEDIAN	243	ADU	VAL	235,250	79	median_master	this | last_yr | all	median BIAS level
2	•	QC1DB	MEDIAN	4.04	e-	VAL	3.5,4.3	79	sigma_raw	this | last_yr | all	RON in single raw frame downloaded data come in ADU (=e-/2.30)
3	•	QC1DB	MEDIAN	2.19	e-	VAL	1.95,2.40	79	sigma_master	this | last_yr | all	RON in master frame downloaded data come in ADU (=e-/2.30)
4	x	QC1DB	MEDIAN	0.076	ADU	VAL	0.05,0.12	79	struct_row	this | last_yr | all	structure of master in X direction
5	x	QC1DB	MEDIAN	0.373	ADU	VAL	0.1,0.5	79	struct_col	this | last_yr | all	structure of master in Y direction
6	•	QC1DB	MEDIAN	138	N	VAL	0,1000	79	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:	243	ADU
fixed thresholds:	235...250	ADU
N_data plotted:	79
[click plot for closeup]

Plot 2 scores: 3|
data source:	giraffe_bias (QC1 database)
dataset:	sigma_raw	•
median:	4.04	e-
fixed thresholds:	3.5...4.3	e-
N_data plotted:	79
[click plot for closeup]

Plot 3 scores: 3|
data source:	giraffe_bias (QC1 database)
dataset:	sigma_master	•
median:	2.19	e-
fixed thresholds:	1.95...2.4	e-
N_data plotted:	79
[click plot for closeup]

Plot 4 scores: 3|
data source:	giraffe_bias (QC1 database)
dataset:	struct_row	x
median:	0.076	ADU
fixed thresholds:	0.05...0.12	ADU
N_data plotted:	79
[click plot for closeup]

Plot 5 scores: 3|
data source:	giraffe_bias (QC1 database)
dataset:	struct_col	x
median:	0.373	ADU
fixed thresholds:	0.1...0.5	ADU
N_data plotted:	79
[click plot for closeup]

Plot 6 scores: 3|
data source:	giraffe_bias (QC1 database)
dataset:	bpm_npix	•
median:	138	N
fixed thresholds:	0...1000	N
N_data plotted:	79
[click plot for closeup]

This is the trending plot for the GIRAFFE QC parameters derived from BIAS frames.

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.

Find more information about GIRAFFE BIAS frames here.

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