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GOMOS Daily Report 08-AUG-2008

GOMOS Daily Report 08-AUG-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
10AUG2008 05:32:36
Data source version
GOMOS/5.00
Start time of products
08AUG2008 00:02:01
Stop time of products
08AUG2008 04:36:14
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
08-AUG-2008 01:17:09
1ZetCMa
177
33666
08-AUG-2008 02:57:45
1ZetCMa
177
33667

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_1PNPDE20080808_000201_000000422071_00045_33666_0694.N1
08-AUG-2008 00:02:01
Straylight
42.000
31
Alp Gru
1.7340
15200.
84
33666
No
2
GOM_TRA_1PNPDE20080808_000505_000000442071_00045_33666_0695.N1
08-AUG-2008 00:05:05
Straylight
43.500
172
Gam Gru
3.0030
13100.
87
33666
No
3
GOM_TRA_1PNPDE20080808_002009_000000382071_00045_33666_0696.N1
08-AUG-2008 00:20:09
Bright
38.000
11
53Alp Aql
0.76500
8000.0
76
33666
No
4
GOM_TRA_1PNPDE20080808_002147_000000352071_00045_33666_0697.N1
08-AUG-2008 00:21:47
Bright
35.000
168
17Zet Aql
2.9860
11000.
70
33666
No
5
GOM_TRA_1PNPDE20080808_002855_000000342071_00045_33666_0698.N1
08-AUG-2008 00:28:55
Bright
34.000
5
3Alp Lyr
0.033000
11000.
68
33666
No
6
GOM_TRA_1PNPDE20080808_003031_000000362071_00045_33666_0699.N1
08-AUG-2008 00:30:31
Bright
35.500
144
18Del Cyg
2.8600
11000.
71
33666
No
7
GOM_TRA_1PNPDE20080808_004312_000000342071_00045_33666_0700.N1
08-AUG-2008 00:43:12
Bright
34.000
49
1Alp UMi
1.9900
6300.0
68
33666
No
8
GOM_TRA_1PNPDE20080808_005611_000000402071_00045_33666_0701.N1
08-AUG-2008 00:56:11
Bright
40.000
42
34Bet Aur
1.9000
10200.
80
33666
No
9
GOM_TRA_1PNPDE20080808_005830_000000372071_00045_33666_0702.N1
08-AUG-2008 00:58:30
Bright
36.500
107
37The Aur
2.6490
11000.
73
33666
No
10
GOM_TRA_1PNPDE20080808_010336_000000432071_00045_33666_0703.N1
08-AUG-2008 01:03:36
Twi_and_stray
43.000
176
23Zet Tau
3.0200
22000.
86
33666
No
11
GOM_TRA_1PNPDE20080808_010722_000000462071_00045_33666_0704.N1
08-AUG-2008 01:07:22
Dark
45.500
14
58Alp Ori
0.87000
3000.0
91
33666
No
12
GOM_TRA_1PNPDE20080808_011017_000000412071_00045_33666_0705.N1
08-AUG-2008 01:10:17
Dark
41.000
30
46Eps Ori
1.6940
30000.
82
33666
No
13
GOM_TRA_1PNPDE20080808_011139_000000402071_00045_33666_0706.N1
08-AUG-2008 01:11:39
Dark
40.000
125
44Iot Ori
2.7700
30000.
80
33666
No
14
GOM_TRA_1PNPDE20080808_011312_000000382071_00045_33666_0841.N1
08-AUG-2008 01:13:12
Dark
37.500
1
9Alp CMa
-1.4400
11000.
75
33666
No
15
GOM_TRA_1PNPDE20080808_011501_000000432071_00045_33666_0842.N1
08-AUG-2008 01:15:01
Dark
43.000
101
11Alp Lep
2.5820
7000.0
86
33666
No
16
GOM_TRA_1PNPDE20080808_013247_000000432071_00046_33667_0843.N1
08-AUG-2008 01:32:47
Dark
43.000
9
Alp Eri
0.45300
24000.
86
33667
No
17
GOM_TRA_1PNPDE20080808_013909_000000412071_00046_33667_0844.N1
08-AUG-2008 01:39:09
Straylight
40.500
148
Alp Tuc
2.8780
4100.0
81
33667
No
18
GOM_TRA_1PNPDE20080808_014238_000000452071_00046_33667_0845.N1
08-AUG-2008 01:42:38
Straylight
45.000
31
Alp Gru
1.7340
15200.
90
33667
No
19
GOM_TRA_1PNPDE20080808_014541_000000432071_00046_33667_0846.N1
08-AUG-2008 01:45:41
Straylight
42.500
172
Gam Gru
3.0030
13100.
85
33667
No
20
GOM_TRA_1PNPDE20080808_020045_000000362071_00046_33667_0847.N1
08-AUG-2008 02:00:45
Bright
36.000
11
53Alp Aql
0.76500
8000.0
72
33667
No
21
GOM_TRA_1PNPDE20080808_020223_000000372071_00046_33667_0848.N1
08-AUG-2008 02:02:23
Bright
36.500
168
17Zet Aql
2.9860
11000.
73
33667
No
22
GOM_TRA_1PNPDE20080808_020931_000000392071_00046_33667_0849.N1
08-AUG-2008 02:09:31
Bright
39.000
5
3Alp Lyr
0.033000
11000.
78
33667
No
23
GOM_TRA_1PNPDE20080808_021107_000000352071_00046_33667_0850.N1
08-AUG-2008 02:11:07
Bright
35.000
144
18Del Cyg
2.8600
11000.
70
33667
No
24
GOM_TRA_1PNPDE20080808_022348_000000332071_00046_33667_0851.N1
08-AUG-2008 02:23:48
Bright
32.500
49
1Alp UMi
1.9900
6300.0
65
33667
No
25
GOM_TRA_1PNPDE20080808_023647_000000492071_00046_33667_1025.N1
08-AUG-2008 02:36:47
Bright
48.500
42
34Bet Aur
1.9000
10200.
97
33667
No
26
GOM_TRA_1PNPDE20080808_023906_000000422071_00046_33667_1026.N1
08-AUG-2008 02:39:06
Bright
41.500
107
37The Aur
2.6490
11000.
83
33667
No
27
GOM_TRA_1PNPDE20080808_024412_000000422071_00046_33667_1027.N1
08-AUG-2008 02:44:12
Twi_and_stray
42.000
176
23Zet Tau
3.0200
22000.
84
33667
No
28
GOM_TRA_1PNPDE20080808_024758_000000552071_00046_33667_1028.N1
08-AUG-2008 02:47:58
Dark
55.000
14
58Alp Ori
0.87000
3000.0
110
33667
No
29
GOM_TRA_1PNPDE20080808_025054_000000412071_00046_33667_1029.N1
08-AUG-2008 02:50:54
Dark
40.500
30
46Eps Ori
1.6940
30000.
81
33667
No
30
GOM_TRA_1PNPDE20080808_025216_000000402071_00046_33667_1030.N1
08-AUG-2008 02:52:16
Dark
40.000
125
44Iot Ori
2.7700
30000.
80
33667
No
31
GOM_TRA_1PNPDE20080808_025348_000000372071_00046_33667_1031.N1
08-AUG-2008 02:53:48
Dark
37.000
1
9Alp CMa
-1.4400
11000.
74
33667
No
32
GOM_TRA_1PNPDE20080808_025538_000000422071_00046_33667_1032.N1
08-AUG-2008 02:55:38
Dark
41.500
101
11Alp Lep
2.5820
7000.0
83
33667
No
33
GOM_TRA_1PNPDE20080808_031324_000000422071_00047_33668_1033.N1
08-AUG-2008 03:13:24
Dark
42.000
9
Alp Eri
0.45300
24000.
84
33668
No
34
GOM_TRA_1PNPDE20080808_031946_000000432071_00047_33668_1034.N1
08-AUG-2008 03:19:46
Straylight
42.500
148
Alp Tuc
2.8780
4100.0
85
33668
No
35
GOM_TRA_1PNPDE20080808_032314_000000422071_00047_33668_1035.N1
08-AUG-2008 03:23:14
Straylight
41.500
31
Alp Gru
1.7340
15200.
83
33668
No
36
GOM_TRA_1PNPDE20080808_032617_000000452071_00047_33668_1036.N1
08-AUG-2008 03:26:17
Straylight
44.500
172
Gam Gru
3.0030
13100.
89
33668
No
37
GOM_TRA_1PNPDE20080808_034121_000000362071_00047_33668_1037.N1
08-AUG-2008 03:41:21
Bright
35.500
11
53Alp Aql
0.76500
8000.0
71
33668
No
38
GOM_TRA_1PNPDE20080808_034259_000000362071_00047_33668_1038.N1
08-AUG-2008 03:42:59
Bright
35.500
168
17Zet Aql
2.9860
11000.
71
33668
No
39
GOM_TRA_1PNPDE20080808_035007_000000392071_00047_33668_1039.N1
08-AUG-2008 03:50:07
Bright
38.500
5
3Alp Lyr
0.033000
11000.
77
33668
No
40
GOM_TRA_1PNPDE20080808_035143_000000372071_00047_33668_1040.N1
08-AUG-2008 03:51:43
Bright
36.500
144
18Del Cyg
2.8600
11000.
73
33668
No
41
GOM_TRA_1PNPDE20080808_040424_000000362071_00047_33668_1041.N1
08-AUG-2008 04:04:24
Bright
35.500
49
1Alp UMi
1.9900
6300.0
71
33668
No
42
GOM_TRA_1PNPDE20080808_041723_000000362071_00047_33668_1179.N1
08-AUG-2008 04:17:23
Bright
35.500
42
34Bet Aur
1.9000
10200.
71
33668
No
43
GOM_TRA_1PNPDE20080808_041942_000000362071_00047_33668_1180.N1
08-AUG-2008 04:19:42
Bright
35.500
107
37The Aur
2.6490
11000.
71
33668
No
44
GOM_TRA_1PNPDE20080808_042448_000000422071_00047_33668_1181.N1
08-AUG-2008 04:24:48
Twi_and_stray
41.500
176
23Zet Tau
3.0200
22000.
83
33668
No
45
GOM_TRA_1PNPDE20080808_042834_000000532071_00047_33668_1182.N1
08-AUG-2008 04:28:34
Dark
53.000
14
58Alp Ori
0.87000
3000.0
106
33668
No
46
GOM_TRA_1PNPDE20080808_043130_000000412071_00047_33668_1183.N1
08-AUG-2008 04:31:30
Dark
41.000
30
46Eps Ori
1.6940
30000.
82
33668
No
47
GOM_TRA_1PNPDE20080808_043252_000000402071_00047_33668_1184.N1
08-AUG-2008 04:32:52
Dark
39.500
125
44Iot Ori
2.7700
30000.
79
33668
No
48
GOM_TRA_1PNPDE20080808_043424_000000492071_00047_33668_1185.N1
08-AUG-2008 04:34:24
Dark
49.000
1
9Alp CMa
-1.4400
11000.
98
33668
No
49
GOM_TRA_1PNPDE20080808_043614_000000442071_00047_33668_1186.N1
08-AUG-2008 04:36:14
Dark
44.000
101
11Alp Lep
2.5820
7000.0
88
33668
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:
24.4898 %
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:
14.677
20.393
NaN
St. deviation:
4.9560
4.4951
NaN
Maximum:
19.385
28.548
NaN
Minimum:
4.6417
8.2736
NaN
Number of data:
17.000
21.000
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:
0.067713
-1.2393
0.043523
-1.3775
St. deviation:
0.50469
0.63534
0.81208
0.92046
Maximum:
4.3000
2.8000
5.6000
3.9000
Minimum:
-4.0000
-5.9000
-5.8000
-7.1000
Number of data:
15350.
15350.
17200.
17200.

 

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
08-AUG-2008 00:02:01
CALIBRATION_DATABASE
GOM_CAL_AXVIEC20080801_080250_20080730_000000_20100101_000000
1
08-AUG-2008 00:02:01
LEVEL-1B_PROC_CONFIG
GOM_PR1_AXNIEC20050627_151042_20020301_000000_20100101_000000
1
08-AUG-2008 00:02:01
STAR_CATALOGUE
GOM_CAT_AXVIEC20020121_161009_20020101_000000_20200101_000000
1
08-AUG-2008 00:02:01
STELLAR_SPECTRA_DATABANK
GOM_STS_AXNIEC20040308_103538_20020101_160000_20100101_000000
1
08-AUG-2008 00:02:01
ECMWF_FILE
AUX_ECF_AXNECM20080807_072111_20080807_210000_20080808_090000
1
08-AUG-2008 00:02:01
ECMWF_FILE
AUX_ECF_AXNECM20080807_190111_20080808_030000_20080808_150000
42
08-AUG-2008 04:17:23
OPTIONAL_ECMWF_FILE
MISSING
1
08-AUG-2008 00:02:01
ORBIT_DATA_FILE
DOR_NAV_0PNPDE20080807_214904_000057382071_00043_33664_6108.N1
1
08-AUG-2008 00:02:01
ORBIT_DATA_FILE
DOR_NAV_0PNPDE20080807_233001_000057382071_00044_33665_6109.N1
14
08-AUG-2008 01:13:12
ORBIT_DATA_FILE
DOR_NAV_0PNPDE20080808_011058_000044632071_00045_33666_6110.N1
25
08-AUG-2008 02:36:47
ORBIT_DATA_FILE
DOR_NAV_0PNPDE20080808_023039_000054192071_00046_33667_6111.N1
42
08-AUG-2008 04:17:23

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