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GOMOS Daily Report 20-DEC-2008

GOMOS Daily Report 20-DEC-2008


Level 0 and Level 1 products

SUMMARY

1. General Info

 
2. Summary of products arrived in PCF (Product Control Facility)
2.1 Level 0: products arrived in PCF during current month (see template here)
2.2 Level 0: plot of mission plan versus production during reporting period
2.3 Level 0: summary of missing occultations with respect to the plan
2.4 Level 1: products arrived in PCF during reporting period

 
3. Plot of Spectrometers and Photometers temperatures

 
4. Dark Charge monitoring
4.1 Products that did not use the Dark Sky Area observation for DC computation
4.2 Plot of Dark Charge

 
5. Demodulation correction and quality product information monitoring
5.1 Percentage of products with some flags set
5.2 Plot of quality information per product (time dependant)
5.3 Plot of quality information per product (world map)

 
6. Star tangent altitude lost
6.1 Statistics on star tangent altitude lost
6.2 Plot of star tangent altitude lost: DARK products
6.3 Plot of star tangent altitude lost: BRIGHT products
6.3 Plot of star tangent altitude lost: TWILIGHT products

 
7. Star Acquisition and Tracking Unit (SATU)
7.1 SATU plots (dark limb): 'X' and 'Y' axis
7.2 SATU Noise Equivalent Angle statistics
7.2.1 SATU NEA Statistics (table)
7.2.2 Daily SATU NEA STD (dark limb) - trend since 1st April 2006

 
8.Auxiliary Data Files used for the production reported in section 2.4

 


Level 2 products




 

1. General Info

This report presents the daily analysis on parameters extracted from GOMOS level 1b data (GOM_TRA_1P).
It is intended to monitor some important parameters that will impact the quality of the level 2 products
as the Spectrometers and Photometers CCD Temperatures and Dark Charge, SATU noise equivalent angle...
A list of level 0 products (and content) that have arrived during the actual month to the PCF is also given.
 
Item Value
Time of report generation
23DEC2008 05:43:57
Data source version
GOMOS/5.00
Start time of products
20DEC2008 00:00:06
Stop time of products
20DEC2008 02:49:21
Store outputs in DB
Yes
Nb of level 1b prods
49
Nb of prods with errors
0

2. Summary of products arrived in PCF (Product Control Facility)

2.1 Level 0 products arrived in PCF (see template here)

2.2 Plot of mission plan versus Level 0 production arrived in PCF during reporting period

Red segments are missing products.
Blue segments are available products.
Green segments are calibration measurements (not available products to users).

qds_image

2.3 Summary of missing occultations (red segments in previous plot)

UTC start time Star name Star ID Orbit
20-DEC-2008 02:52:19
ZetCen
95
35585

2.4 Summary of processed GOM_TRA_1P products

Nr Filename UTC Start time Limb Duration Star Id Star Name Star Mag Star Temp Nb Meas Orbit Prod. error
1
GOM_TRA_1PNPDE20081220_000006_000000482074_00460_35584_1776.N1
20-DEC-2008 00:00:06
Straylight
48.000
47
2Bet CMa
1.9760
28000.
96
35584
No
2
GOM_TRA_1PNPDE20081220_000333_000000472074_00460_35584_1777.N1
20-DEC-2008 00:03:33
Straylight
46.500
7
19Bet Ori
0.10000
14000.
93
35584
No
3
GOM_TRA_1PNPDE20081220_000540_000000462074_00460_35584_1778.N1
20-DEC-2008 00:05:40
Straylight
46.000
30
46Eps Ori
1.6940
30000.
92
35584
No
4
GOM_TRA_1PNPDE20081220_000837_000000562074_00460_35584_1779.N1
20-DEC-2008 00:08:37
Twi_and_stray
55.500
14
58Alp Ori
0.87000
3000.0
111
35584
No
5
GOM_TRA_1PNPDE20081220_001048_000000472074_00460_35584_1780.N1
20-DEC-2008 00:10:48
Twi_and_stray
47.000
13
87Alp Tau
0.86700
3800.0
94
35584
No
6
GOM_TRA_1PNPDE20081220_001243_000000402074_00460_35584_1781.N1
20-DEC-2008 00:12:43
Bright
40.000
176
23Zet Tau
3.0200
22000.
80
35584
No
7
GOM_TRA_1PNPDE20081220_001448_000000412074_00460_35584_1782.N1
20-DEC-2008 00:14:48
Bright
41.000
28
12Bet Tau
1.6500
15200.
82
35584
No
8
GOM_TRA_1PNPDE20081220_001811_000000412074_00460_35584_1783.N1
20-DEC-2008 00:18:11
Bright
40.500
107
37The Aur
2.6490
11000.
81
35584
No
9
GOM_TRA_1PNPDE20081220_001942_000000412074_00460_35584_1784.N1
20-DEC-2008 00:19:42
Bright
40.500
6
13Alp Aur
0.080000
3400.0
81
35584
No
10
GOM_TRA_1PNPDE20081220_003122_000000352074_00460_35584_1785.N1
20-DEC-2008 00:31:22
Bright
34.500
49
1Alp UMi
1.9900
6300.0
69
35584
No
11
GOM_TRA_1PNPDE20081220_003603_000000332074_00460_35584_1786.N1
20-DEC-2008 00:36:03
Bright
33.000
60
7Bet UMi
2.0810
3950.0
66
35584
No
12
GOM_TRA_1PNPDE20081220_004028_000000432074_00460_35584_1787.N1
20-DEC-2008 00:40:28
Bright
43.000
32
77Eps UMa
1.7630
11000.
86
35584
No
13
GOM_TRA_1PNPDE20081220_004313_000000602074_00460_35584_1788.N1
20-DEC-2008 00:43:13
Bright
60.000
39
85Eta UMa
1.8540
24000.
120
35584
No
14
GOM_TRA_1PNPDE20081220_004643_000000392074_00460_35584_1789.N1
20-DEC-2008 00:46:43
Bright
39.000
180
27Gam Boo
3.0400
8000.0
78
35584
No
15
GOM_TRA_1PNPDE20081220_005001_000000422074_00460_35584_1790.N1
20-DEC-2008 00:50:01
Bright
42.000
83

2.3780
11000.
84
35584
No
16
GOM_TRA_1PNPDE20081220_005331_000000422074_00460_35584_1791.N1
20-DEC-2008 00:53:31
Bright
41.500
111
8Eta Boo
2.6800
6000.0
83
35584
No
17
GOM_TRA_1PNPDE20081220_010213_000000392074_00460_35584_1792.N1
20-DEC-2008 01:02:13
Bright
39.000
122
9Alp2Lib
2.7470
9700.0
78
35584
No
18
GOM_TRA_1PNPDE20081220_010355_000000522074_00460_35584_1897.N1
20-DEC-2008 01:03:55
Twi_and_stray
52.000
15
67Alp Vir
0.97600
28000.
104
35584
No
19
GOM_TRA_1PNPDE20081220_010844_000000442074_00460_35584_1898.N1
20-DEC-2008 01:08:44
Dark
43.500
54
5The Cen
2.0550
4500.0
87
35584
No
20
GOM_TRA_1PNPDE20081220_011143_000000402074_00460_35584_1899.N1
20-DEC-2008 01:11:43
Dark
39.500
95
Zet Cen
2.5450
26000.
79
35584
No
21
GOM_TRA_1PNPDE20081220_011437_000000402074_00460_35584_1900.N1
20-DEC-2008 01:14:37
Dark
40.000
64
Gam Cen
2.2000
10600.
80
35584
No
22
GOM_TRA_1PNPDE20081220_011615_000000452074_00461_35585_1901.N1
20-DEC-2008 01:16:15
Dark
45.000
20
Bet Cru
1.2530
30000.
90
35585
No
23
GOM_TRA_1PNPDE20081220_012021_000000472074_00461_35585_1902.N1
20-DEC-2008 01:20:21
Dark
47.000
113
Mu Vel
2.6920
5000.0
94
35585
No
24
GOM_TRA_1PNPDE20081220_012222_000000392074_00461_35585_1903.N1
20-DEC-2008 01:22:22
Dark
39.000
159
Ups Car
2.9200
7200.0
78
35585
No
25
GOM_TRA_1PNPDE20081220_012350_000000402074_00461_35585_1904.N1
20-DEC-2008 01:23:50
Dark
40.000
71
Iot Car
2.2460
7700.0
80
35585
No
26
GOM_TRA_1PNPDE20081220_012642_000000502074_00461_35585_1905.N1
20-DEC-2008 01:26:42
Dark
50.000
65
Lam Vel
2.2040
4400.0
100
35585
No
27
GOM_TRA_1PNPDE20081220_012834_000000462074_00461_35585_1906.N1
20-DEC-2008 01:28:34
Dark
45.500
34
Gam2Vel
1.7930
23000.
91
35585
No
28
GOM_TRA_1PNPDE20081220_013023_000000542074_00461_35585_1907.N1
20-DEC-2008 01:30:23
Dark
53.500
2
Alp Car
-0.73600
7000.0
107
35585
No
29
GOM_TRA_1PNPDE20081220_013316_000000492074_00461_35585_1908.N1
20-DEC-2008 01:33:16
Dark
49.000
117
Pi Pup
2.7060
3800.0
98
35585
No
30
GOM_TRA_1PNPDE20081220_013624_000000502074_00461_35585_1909.N1
20-DEC-2008 01:36:24
Straylight
49.500
23
21Eps CMa
1.5020
26000.
99
35585
No
31
GOM_TRA_1PNPDE20081220_014042_000000492074_00461_35585_1910.N1
20-DEC-2008 01:40:42
Straylight
49.000
47
2Bet CMa
1.9760
28000.
98
35585
No
32
GOM_TRA_1PNPDE20081220_014409_000000472074_00461_35585_1911.N1
20-DEC-2008 01:44:09
Straylight
47.000
7
19Bet Ori
0.10000
14000.
94
35585
No
33
GOM_TRA_1PNPDE20081220_014616_000000462074_00461_35585_1912.N1
20-DEC-2008 01:46:16
Straylight
46.000
30
46Eps Ori
1.6940
30000.
92
35585
No
34
GOM_TRA_1PNPDE20081220_014913_000000572074_00461_35585_1913.N1
20-DEC-2008 01:49:13
Twi_and_stray
56.500
14
58Alp Ori
0.87000
3000.0
113
35585
No
35
GOM_TRA_1PNPDE20081220_015124_000000472074_00461_35585_1914.N1
20-DEC-2008 01:51:24
Twi_and_stray
47.000
13
87Alp Tau
0.86700
3800.0
94
35585
No
36
GOM_TRA_1PNPDE20081220_015319_000000422074_00461_35585_1915.N1
20-DEC-2008 01:53:19
Bright
42.000
176
23Zet Tau
3.0200
22000.
84
35585
No
37
GOM_TRA_1PNPDE20081220_015523_000000412074_00461_35585_1916.N1
20-DEC-2008 01:55:23
Bright
41.000
28
12Bet Tau
1.6500
15200.
82
35585
No
38
GOM_TRA_1PNPDE20081220_015846_000000422074_00461_35585_1917.N1
20-DEC-2008 01:58:46
Bright
42.000
107
37The Aur
2.6490
11000.
84
35585
No
39
GOM_TRA_1PNPDE20081220_020018_000000422074_00461_35585_1918.N1
20-DEC-2008 02:00:18
Bright
42.000
6
13Alp Aur
0.080000
3400.0
84
35585
No
40
GOM_TRA_1PNPDE20081220_021158_000000362074_00461_35585_1919.N1
20-DEC-2008 02:11:58
Bright
35.500
49
1Alp UMi
1.9900
6300.0
71
35585
No
41
GOM_TRA_1PNPDE20081220_021639_000000362074_00461_35585_1920.N1
20-DEC-2008 02:16:39
Bright
35.500
60
7Bet UMi
2.0810
3950.0
71
35585
No
42
GOM_TRA_1PNPDE20081220_022103_000000422074_00461_35585_2077.N1
20-DEC-2008 02:21:03
Bright
42.000
32
77Eps UMa
1.7630
11000.
84
35585
No
43
GOM_TRA_1PNPDE20081220_022349_000000422074_00461_35585_2078.N1
20-DEC-2008 02:23:49
Bright
42.000
39
85Eta UMa
1.8540
24000.
84
35585
No
44
GOM_TRA_1PNPDE20081220_022719_000000562074_00461_35585_2079.N1
20-DEC-2008 02:27:19
Bright
56.000
180
27Gam Boo
3.0400
8000.0
112
35585
No
45
GOM_TRA_1PNPDE20081220_023037_000000552074_00461_35585_2080.N1
20-DEC-2008 02:30:37
Bright
55.000
83

2.3780
11000.
110
35585
No
46
GOM_TRA_1PNPDE20081220_023407_000000442074_00461_35585_2081.N1
20-DEC-2008 02:34:07
Bright
43.500
111
8Eta Boo
2.6800
6000.0
87
35585
No
47
GOM_TRA_1PNPDE20081220_024250_000000402074_00461_35585_2082.N1
20-DEC-2008 02:42:50
Bright
39.500
122
9Alp2Lib
2.7470
9700.0
79
35585
No
48
GOM_TRA_1PNPDE20081220_024432_000000532074_00461_35585_2083.N1
20-DEC-2008 02:44:32
Twi_and_stray
52.500
15
67Alp Vir
0.97600
28000.
105
35585
No
49
GOM_TRA_1PNPDE20081220_024921_000000442074_00461_35585_2084.N1
20-DEC-2008 02:49:21
Dark
43.500
54
5The Cen
2.0550
4500.0
87
35585
No

 

3. Plot of GOMOS spectrometers and photometers temperatures from level 1b data

qds_image


 

4. Overview of dark signal processing per product

The Dark Charge (DC) is a temperature-dependant signal added to the useful measurements and it is therefore substracted
from them during the processing. There are two phenomena that produce a continuous increase of the DC: the "hot pixels"
(a pixel is "hot" when its DC exceeds by a significant amount its value measured on ground at the same temperature) and
the "Random Telegraphic Signal" (abrupt change positive or negative of the CCD pixel signal, random in time, affecting
only the DC part of the signal and not the photon generated signal).
In this section a list of products that did not use the Dark Sky Area (DSA) observation for the DC computation is given.
It is also provided the mean DC plot per product for dark limb products with no error flag set.

4.1 All products used the DSA observation for the DC computation

4.2 Plot of mean dark charges per product: only products in DARK limb conditions without errors are used

qds_image


 

5. Demodulation flag and quality information monitoring

In this section it is presented the modulation information extracted from the pcd (product confidence data)
at measurement level and information extracted from the Quality Summary dataset. Only products without errors
(error flag in the MPH set to "0") are used.

 

5.1 Percentage of products during reporting period with:

At least one measurement with demodulation flag set:
30.6122 %
Reference spectrum computed from DB:
0.00000 %
Reference spectrum with small number of measurements:
0.00000 %
SATU data not used:
0.00000 %

 

5.2 Plot quality information per product (time dependant)

qds_image


 

5.3 Plot quality information per product (world map)

qds_image


 

6. Statistics and plot of tangent altitude of the last measurement (DARK & BRIGHT products without errors)

6.1 Statistics on tangent altitude lost:

Statistics DARK BRIGHT TWILIGHT
Mean:
15.538
18.139
NaN
St. deviation:
4.8461
6.3238
NaN
Maximum:
20.385
28.264
NaN
Minimum:
4.0261
3.6097
NaN
Number of data:
12.000
24.000
NaN

 

6.2 Plot for DARK limb products

qds_image


 

6.3 Plot for BRIGHT limb products

qds_image


 

7. Star Acquisition and Tracking Unit (SATU)

The Star Acquisition and Tracking Unit (SATU) analyses the position of the tracked star beam collected by
the GOMOS telescope and deflected by the optical beam dispatcher. The main functin of the SATU is to detect
a star, provide its image position to the science data electronics and to help the pointing function to keep
the star image at a fixed position. In tracking mode the SATU data is recorded with a frecuency of 100 Hz.

 

7.1 SATU 'X' and 'Y' axis plots (dark limb)

SATU CCD 'X' and 'Y' axis plots are provided in order to detect any abnormal behaviour of the tracking system.
For every occultation (color) the plot should remain stable (with some noise) until we are deep in the atmosphere
where big fluctuations are registered due to the refractive effects.

qds_image

qds_image


 

7.2 Statistics on SATU Noise Equivalent Angle (NEA) for DARK (D) and BRIGHT (B) products above 105 kms

The Star Acquisition and Tracking Unit (it is the CCD that tracks the star while it is occulted) Noise Equivalent
Angle consists of the statistical angular variation of the SATU data above the atmosphere.
Statistics (in microradians) above 105 km are computed for every occultation, giving four values per occultation: one in the 'X'
direction and one in the 'Y' direction for dark and bright limbs. A mean value per day in every direction and limb
is calculated and monitored in order to assess instrument performance in terms of star pointing.

 

7.2.1 SATU NEA Statistics (table)

Statistics SATU X (D) SATU Y (D) SATU X (B) SATU Y (B)
Mean:
0.22390
-1.2755
0.18293
-1.3271
St. deviation:
0.55221
1.0421
0.83105
1.4005
Maximum:
9.7000
3.7000
5.1000
6.3000
Minimum:
-3.9000
-11.600
-4.7000
-10.400
Number of data:
11650.
11650.
21750.
21750.

 

7.2.2 Trend of daily SATU NEA St. deviation since 1st April 2006 (dark limb)

The long term trend of the SATU 'X' and 'Y' standard deviations should be constant during the whole mission.

The colorbar represents the start tangent altitude (km) of the occultations.

Upper curve: STD of SATU Y axis
Lower curve: STD of SATU X axis

qds_image


 

8. Auxiliary Data Files used for the production reported in section 2.4

The number reported in the third column indicates since which file (see list in section 2.4) the corresponding
auxiliary file has been used. The fourth column is the date of those product files.

 
Type Auxiliary Filename Used since product Used since product date
INST_PHYS_CHARACTERISTICS
GOM_INS_AXNIEC20050627_150713_20030716_120000_20100101_000000
1
20-DEC-2008 00:00:06
CALIBRATION_DATABASE
GOM_CAL_AXVIEC20081218_160215_20081215_000000_20100101_000000
1
20-DEC-2008 00:00:06
LEVEL-1B_PROC_CONFIG
GOM_PR1_AXNIEC20050627_151042_20020301_000000_20100101_000000
1
20-DEC-2008 00:00:06
STAR_CATALOGUE
GOM_CAT_AXVIEC20020121_161009_20020101_000000_20200101_000000
1
20-DEC-2008 00:00:06
STELLAR_SPECTRA_DATABANK
GOM_STS_AXNIEC20040308_103538_20020101_160000_20100101_000000
1
20-DEC-2008 00:00:06
ECMWF_FILE
AUX_ECF_AXNECM20081219_072111_20081219_210000_20081220_090000
1
20-DEC-2008 00:00:06
OPTIONAL_ECMWF_FILE
MISSING
1
20-DEC-2008 00:00:06
ORBIT_DATA_FILE
DOR_NAV_0PNPDE20081219_213742_000057382074_00458_35582_6994.N1
1
20-DEC-2008 00:00:06
ORBIT_DATA_FILE
DOR_NAV_0PNPDE20081219_231839_000057382074_00459_35583_6995.N1
18
20-DEC-2008 01:03:55
ORBIT_DATA_FILE
DOR_NAV_0PNPDE20081220_005936_000044632074_00460_35584_6996.N1
42
20-DEC-2008 02:21:03

Reports
Daily Report Level 2 Dataset IPF v6.01
Daily Reports of NRT data
Data Anomaly Reports
Instrument Anomaly Reports
Monthly Reports
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24-Apr-2008