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GOMOS Daily Report 02-APR-2008

GOMOS Daily Report 02-APR-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
04APR2008 05:32:36
Data source version
GOMOS/5.00
Start time of products
QDS_YESTERDAY(/START)-1D (02APR2008 00:00:00)
Stop time of products
QDS_YESTERDAY(/STOP)-1D (03APR2008 00:00:00)
Store outputs in DB
Yes
Nb of level 1b prods
50
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
02-APR-2008 00:01:31
GamGru
172
31833
02-APR-2008 01:42:07
GamGru
172
31834

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_1PNPDE20080402_000813_000000382067_00216_31833_8083.N1
02-APR-2008 00:08:13
Dark
38.000
45
Alp Pav
1.9400
26000.
76
31833
No
2
GOM_TRA_1PNPDE20080402_001545_000000402067_00217_31834_8084.N1
02-APR-2008 00:15:45
Dark
39.500
43
Alp TrA
1.9100
4250.0
79
31834
No
3
GOM_TRA_1PNPDE20080402_001737_000000392067_00217_31834_8085.N1
02-APR-2008 00:17:37
Dark
39.000
134
Bet TrA
2.8100
6600.0
78
31834
No
4
GOM_TRA_1PNPDE20080402_002014_000000482067_00217_31834_8086.N1
02-APR-2008 00:20:14
Dark
47.500
4
Alp1Cen
-0.010000
5800.0
95
31834
No
5
GOM_TRA_1PNPDE20080402_002227_000000412067_00217_31834_8087.N1
02-APR-2008 00:22:27
Straylight
41.000
12
Alp1Cru
0.77500
30000.
82
31834
No
6
GOM_TRA_1PNPDE20080402_002355_000000482067_00217_31834_8088.N1
02-APR-2008 00:23:55
Straylight
48.000
26
Gam Cru
1.6240
2900.0
96
31834
No
7
GOM_TRA_1PNPDE20080402_002552_000000392067_00217_31834_8089.N1
02-APR-2008 00:25:52
Straylight
39.000
64
Gam Cen
2.2000
10600.
78
31834
No
8
GOM_TRA_1PNPDE20080402_002827_000000412067_00217_31834_8090.N1
02-APR-2008 00:28:27
Straylight
41.000
123
Iot Cen
2.7500
10200.
82
31834
No
9
GOM_TRA_1PNPDE20080402_003315_000000432067_00217_31834_8205.N1
02-APR-2008 00:33:15
Twi_and_stray
43.000
106
9Bet Crv
2.6480
5600.0
86
31834
No
10
GOM_TRA_1PNPDE20080402_003512_000000402067_00217_31834_8206.N1
02-APR-2008 00:35:12
Twi_and_stray
40.000
100
4Gam Crv
2.5800
13100.
80
31834
No
11
GOM_TRA_1PNPDE20080402_004450_000000382067_00217_31834_8207.N1
02-APR-2008 00:44:50
Bright
37.500
62
94Bet Leo
2.1360
9700.0
75
31834
No
12
GOM_TRA_1PNPDE20080402_004628_000000362067_00217_31834_8208.N1
02-APR-2008 00:46:28
Bright
35.500
96
68Del Leo
2.5600
9300.0
71
31834
No
13
GOM_TRA_1PNPDE20080402_005316_000000372067_00217_31834_8209.N1
02-APR-2008 00:53:16
Bright
37.000
174
52Psi UMa
3.0040
4400.0
74
31834
No
14
GOM_TRA_1PNPDE20080402_005615_000000362067_00217_31834_8210.N1
02-APR-2008 00:56:15
Bright
35.500
87
64Gam UMa
2.4330
11000.
71
31834
No
15
GOM_TRA_1PNPDE20080402_005808_000000382067_00217_31834_8211.N1
02-APR-2008 00:58:08
Bright
37.500
36
50Alp UMa
1.8000
6300.0
75
31834
No
16
GOM_TRA_1PNPDE20080402_010611_000000322067_00217_31834_8212.N1
02-APR-2008 01:06:11
Bright
32.000
49
1Alp UMi
1.9900
6300.0
64
31834
No
17
GOM_TRA_1PNPDE20080402_011352_000000372067_00217_31834_8213.N1
02-APR-2008 01:13:52
Bright
37.000
89
5Alp Cep
2.4510
8000.0
74
31834
No
18
GOM_TRA_1PNPDE20080402_012923_000000462067_00217_31834_8214.N1
02-APR-2008 01:29:23
Twi_and_stray
45.500
61
8Eps Peg
2.1000
3900.0
91
31834
No
19
GOM_TRA_1PNPDE20080402_013153_000000422067_00217_31834_8215.N1
02-APR-2008 01:31:53
Twilight
41.500
162
34Alp Aqr
2.9440
5350.0
83
31834
No
20
GOM_TRA_1PNPDE20080402_013401_000000432067_00217_31834_8216.N1
02-APR-2008 01:34:01
Dark
42.500
154
22Bet Aqr
2.8990
5700.0
85
31834
No
21
GOM_TRA_1PNPDE20080402_013634_000000402067_00217_31834_8217.N1
02-APR-2008 01:36:34
Dark
40.000
142
49Del Cap
2.8500
8900.0
80
31834
No
22
GOM_TRA_1PNPDE20080402_014850_000000392067_00217_31834_8218.N1
02-APR-2008 01:48:50
Dark
39.000
45
Alp Pav
1.9400
26000.
78
31834
No
23
GOM_TRA_1PNPDE20080402_015621_000000402067_00218_31835_8219.N1
02-APR-2008 01:56:21
Dark
40.000
43
Alp TrA
1.9100
4250.0
80
31835
No
24
GOM_TRA_1PNPDE20080402_015813_000000402067_00218_31835_8220.N1
02-APR-2008 01:58:13
Dark
39.500
134
Bet TrA
2.8100
6600.0
79
31835
No
25
GOM_TRA_1PNPDE20080402_020051_000000432067_00218_31835_8221.N1
02-APR-2008 02:00:51
Dark
43.000
4
Alp1Cen
-0.010000
5800.0
86
31835
No
26
GOM_TRA_1PNPDE20080402_020303_000000432067_00218_31835_8222.N1
02-APR-2008 02:03:03
Straylight
43.000
12
Alp1Cru
0.77500
30000.
86
31835
No
27
GOM_TRA_1PNPDE20080402_020431_000000522067_00218_31835_8223.N1
02-APR-2008 02:04:31
Straylight
51.500
26
Gam Cru
1.6240
2900.0
103
31835
No
28
GOM_TRA_1PNPDE20080402_020628_000000402067_00218_31835_8224.N1
02-APR-2008 02:06:28
Straylight
40.000
64
Gam Cen
2.2000
10600.
80
31835
No
29
GOM_TRA_1PNPDE20080402_020903_000000432067_00218_31835_8225.N1
02-APR-2008 02:09:03
Straylight
42.500
123
Iot Cen
2.7500
10200.
85
31835
No
30
GOM_TRA_1PNPDE20080402_021351_000000452067_00218_31835_8226.N1
02-APR-2008 02:13:51
Twi_and_stray
44.500
106
9Bet Crv
2.6480
5600.0
89
31835
No
31
GOM_TRA_1PNPDE20080402_021548_000000422067_00218_31835_8431.N1
02-APR-2008 02:15:48
Twi_and_stray
42.000
100
4Gam Crv
2.5800
13100.
84
31835
No
32
GOM_TRA_1PNPDE20080402_022526_000000382067_00218_31835_8432.N1
02-APR-2008 02:25:26
Bright
38.000
62
94Bet Leo
2.1360
9700.0
76
31835
No
33
GOM_TRA_1PNPDE20080402_022704_000000362067_00218_31835_8433.N1
02-APR-2008 02:27:04
Bright
36.000
96
68Del Leo
2.5600
9300.0
72
31835
No
34
GOM_TRA_1PNPDE20080402_023352_000000362067_00218_31835_8434.N1
02-APR-2008 02:33:52
Bright
36.000
174
52Psi UMa
3.0040
4400.0
72
31835
No
35
GOM_TRA_1PNPDE20080402_023651_000000372067_00218_31835_8435.N1
02-APR-2008 02:36:51
Bright
37.000
87
64Gam UMa
2.4330
11000.
74
31835
No
36
GOM_TRA_1PNPDE20080402_023844_000000352067_00218_31835_8436.N1
02-APR-2008 02:38:44
Bright
34.500
36
50Alp UMa
1.8000
6300.0
69
31835
No
37
GOM_TRA_1PNPDE20080402_024647_000000362067_00218_31835_8437.N1
02-APR-2008 02:46:47
Bright
35.500
49
1Alp UMi
1.9900
6300.0
71
31835
No
38
GOM_TRA_1PNPDE20080402_025428_000000372067_00218_31835_8438.N1
02-APR-2008 02:54:28
Bright
36.500
89
5Alp Cep
2.4510
8000.0
73
31835
No
39
GOM_TRA_1PNPDE20080402_031000_000000452067_00218_31835_8439.N1
02-APR-2008 03:10:00
Twi_and_stray
44.500
61
8Eps Peg
2.1000
3900.0
89
31835
No
40
GOM_TRA_1PNPDE20080402_031229_000000422067_00218_31835_8440.N1
02-APR-2008 03:12:29
Twilight
41.500
162
34Alp Aqr
2.9440
5350.0
83
31835
No
41
GOM_TRA_1PNPDE20080402_031437_000000432067_00218_31835_8441.N1
02-APR-2008 03:14:37
Dark
42.500
154
22Bet Aqr
2.8990
5700.0
85
31835
No
42
GOM_TRA_1PNPDE20080402_031710_000000402067_00218_31835_8442.N1
02-APR-2008 03:17:10
Dark
39.500
142
49Del Cap
2.8500
8900.0
79
31835
No
43
GOM_TRA_1PNPDE20080402_032245_000000372067_00218_31835_8443.N1
02-APR-2008 03:22:45
Dark
36.500
172
Gam Gru
3.0030
13100.
73
31835
No
44
GOM_TRA_1PNPDE20080402_032926_000000382067_00218_31835_8444.N1
02-APR-2008 03:29:26
Dark
37.500
45
Alp Pav
1.9400
26000.
75
31835
No
45
GOM_TRA_1PNPDE20080402_033657_000000432067_00219_31836_8445.N1
02-APR-2008 03:36:57
Dark
43.000
43
Alp TrA
1.9100
4250.0
86
31836
No
46
GOM_TRA_1PNPDE20080402_033850_000000402067_00219_31836_8446.N1
02-APR-2008 03:38:50
Dark
39.500
134
Bet TrA
2.8100
6600.0
79
31836
No
47
GOM_TRA_1PNPDE20080402_034127_000000462067_00219_31836_8447.N1
02-APR-2008 03:41:27
Dark
46.000
4
Alp1Cen
-0.010000
5800.0
92
31836
No
48
GOM_TRA_1PNPDE20080402_034339_000000432067_00219_31836_8448.N1
02-APR-2008 03:43:39
Straylight
42.500
12
Alp1Cru
0.77500
30000.
85
31836
No
49
GOM_TRA_1PNPDE20080402_034507_000000442067_00219_31836_8449.N1
02-APR-2008 03:45:07
Straylight
44.000
26
Gam Cru
1.6240
2900.0
88
31836
No
50
GOM_TRA_1PNPDE20080402_034704_000000372067_00219_31836_8450.N1
02-APR-2008 03:47:04
Straylight
37.000
64
Gam Cen
2.2000
10600.
74
31836
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:
30.0000 %
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:
15.800
21.749
12.150
St. deviation:
3.3916
2.8235
0.12287
Maximum:
19.715
29.474
12.237
Minimum:
9.1291
18.678
12.063
Number of data:
17.000
14.000
2.0000

 

6.2 Plot for DARK limb products

qds_image


 

6.3 Plot for BRIGHT limb products

qds_image


 

6.3 Plot for TWILIGHT 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:
0.055538
-1.4024
0.10235
-1.3952
St. deviation:
0.57187
0.74549
0.78292
0.88232
Maximum:
4.7000
27.400
4.1000
2.0000
Minimum:
-12.600
-11.200
-3.3000
-5.7000
Number of data:
15000.
15000.
11500.
11500.

 

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
02-APR-2008 00:08:13
CALIBRATION_DATABASE
GOM_CAL_AXVIEC20080401_074641_20080330_000000_20100101_000000
1
02-APR-2008 00:08:13
LEVEL-1B_PROC_CONFIG
GOM_PR1_AXNIEC20050627_151042_20020301_000000_20100101_000000
1
02-APR-2008 00:08:13
STAR_CATALOGUE
GOM_CAT_AXVIEC20020121_161009_20020101_000000_20200101_000000
1
02-APR-2008 00:08:13
STELLAR_SPECTRA_DATABANK
GOM_STS_AXNIEC20040308_103538_20020101_160000_20100101_000000
1
02-APR-2008 00:08:13
ECMWF_FILE
AUX_ECF_AXNECM20080401_072112_20080401_210000_20080402_090000
1
02-APR-2008 00:08:13
OPTIONAL_ECMWF_FILE
MISSING
1
02-APR-2008 00:08:13
ORBIT_DATA_FILE
AUX_FPO_AXVPDS20080401_010110_20080331_193840_20080410_210453
1
02-APR-2008 00:08:13
ORBIT_DATA_FILE
DOR_NAV_0PNPDE20080401_224212_000060572067_00216_31833_5334.N1
9
02-APR-2008 00:33:15
ORBIT_DATA_FILE
DOR_NAV_0PNPDE20080402_002828_000060572067_00217_31834_5335.N1
31
02-APR-2008 02:15:48

Reports
Daily Report Level 2 Dataset IPF v6.01
Daily Reports of NRT data
Data Anomaly Reports
Instrument Anomaly Reports
Monthly Reports
  ©PCS/Esrin/ESA  e-mail webmaster Last modified:
24-Apr-2008