CALMON data 1

Use of daily CALMON data

Brian StewartRAL

CALMON data 2

Topics

• Work in progress, based on– Engineering Report data

• Scan averages generated by daily routine processing

– Raw telemetry data

CALMON data 3

ER data

•Integrating Sphere •25th-27th Dec 2004•Daily average SW signal over 282 samples – BB

•Average over ALL pixels•Averages per pixel

•Peak at approx 6pm each day, pattern repeats from day to day

CALMON data 4

CALMON all pixels

•Integrating Sphere •Daily peak of average SW signal over 282 samples and all pixels

•Gaps – Sun avoidance seasons•Geometry appears to repeat from year to year•Overall ~3% change 2003 – 2004

CALMON data 5

CALMON data by pixel

•Integrating Sphere •Daily peak average SW signal over 282 samples for individual pixels•Relative pixel signals appears to repeat from year to year•Overall shape repeats from year to year

June 21st 2003

June 21st 2004

CALMON data 6

CALMON ratio

•Integrating Sphere

•Ratio of daily peak average SW signal over 282 samples for individual pixels

2003 peak/2004 peak

CALMON data 7

Pixel data

•Pixel 128 (2003)•CALMON –BB data

•Time ordered (SW, total) as in ER•Sorted by Sun angle

CALMON data 8

Pixel data (2)

•Pixel 128 • SW-BB• median in 1° intervals

CALMON data 9

Pixel data(3)

•Pixel 128 • peak and baseline well defined

CALMON data 10

All pixels

• Feb 28th 2003, 2004, 2005

•Same patterns

2003/02/28

2004/02/28

2005/02/28

CALMON data 11

All pixels(2)

•Pixel peaks•28/02/03•28/02/04•28/02/05

CALMON data 12

Response ratios

• ~5% 2003-2004• ~1% 2004-2005• pixel/ pixel ~constant• differences

•Pixels 0-128•Pixel 28

• More work •ER or raw data•Photo-diode

CALMON data 13

Photodiode data

CALMON data 14

Photodiode data(2)•Diodes A,B,C

•1 msec response•CALMON response•Direct solar signal•24° integration

•Problems