C9732DK-11 Datasheet, PDF (8/9 Pages) Hamamatsu Corporation – For soft X-ray imaging, cassette type with USB 2.0 interface Large photodiode area: 120 × 120 mm

Flat panel sensor
C9732DK-11
Description of terms
Blemish
Length of pixel cluster which has less than 90 % of the average sensitivity of the surrounding pixels.
Column
Bright line output adjacent to a defect line
The relative sensitivity ratio “a/b” should be 105 % or less for vertical lines, 120 % or less
for horizontal lines, where “a” and “b” are defined as follows:
a: Average sensitivity of bright line (Line A) adjacent to defect line
b: Average sensitivity of standard line (Line B) adjacent to Line A
Note that the average sensitivity of the bright line is calculated from the region adjacent to
the defect region in the defect line.
Example: See the right figure
Defect region in defect line: From pixel (J, 1) to pixel (J, 15)
a: Average sensitivity from pixel (I, 1) to pixel (I, 15) or from pixel (K, 1) to pixel (K, 15)
b: Average sensitivity from pixel (H, 1) to pixel (H, 15) or from pixel (L, 1) to pixel (L, 15)
A B CD E F GH I J K LMNOPQR S
1
2
3
4
5
6
7
8
9
Line B
10
(Column H, L)
11
12
13
Line A
14
(Column I, K)
15
16
17
Defect line
18
(Column J)
19
20
21
22
KACCC0385EB
Defect cluster
Formed with more than 3 × 3 pixels which have less
than 1/8 of the average sensitivity of the surrounding pixels.
This is defined as defect cluster. This is not defined as defect cluster.
Normal pixel
Defective pixel
KACCC0384EB
Nonuniformity of sensitivity
16 × 16 segments are 16 × 16-divided active area excluded 1 mm from the whole edge. Xij is defined as the average sensitivity of
each segment.
Uniformity of sensitivity is calculated as following equation.
Nonunifomity of sensitivity = ^σ
x
σ: standard deviation of 16 × 16 “Xij”
x : average value of 16 × 16 “Xij”
20
pixels 146 pixels 146 pixels
20
146 pixels 138 pixels pixels
···········
16 segments
1 mm
···········
···········
Active area
1 mm
KACCC0447EA
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