GOMOS Daily Report 22-FEB-2012


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
27FEB2012 12:08:35
Data source version
GOMOS/6.01
Start time of products
22FEB2012 00:19:03
Stop time of products
22FEB2012 23:46:07
Store outputs in DB
Yes
Nb of level 1b prods
34
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
22-FEB-2012 19:53:15
17ZetAql
168
52225
22-FEB-2012 21:33:30
17ZetAql
168
52226
22-FEB-2012 23:13:44
17ZetAql
168
52227

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_1PNPDE20120222_001903_000000513112_00031_52200_0756.N1
22-FEB-2012 00:19:03
Dark
50.500
10
Bet Cen
0.61000
28000.
101
52200
No
2
GOM_TRA_1PNPDE20120222_004023_000000473112_00031_52200_0757.N1
22-FEB-2012 00:40:23
Twi_and_stray
46.500
48
30Alp Hya
1.9770
4100.0
93
52200
No
3
GOM_TRA_1PNPDE20120222_015917_000000473112_00032_52201_0788.N1
22-FEB-2012 01:59:17
Dark
47.000
10
Bet Cen
0.61000
28000.
94
52201
No
4
GOM_TRA_1PNPDE20120222_022037_000000483112_00032_52201_0789.N1
22-FEB-2012 02:20:37
Twi_and_stray
48.000
48
30Alp Hya
1.9770
4100.0
96
52201
No
5
GOM_TRA_1PNPDE20120222_033932_000000523112_00033_52202_0836.N1
22-FEB-2012 03:39:32
Dark
52.000
10
Bet Cen
0.61000
28000.
104
52202
No
6
GOM_TRA_1PNPDE20120222_040051_000000473112_00033_52202_0837.N1
22-FEB-2012 04:00:51
Twi_and_stray
47.000
48
30Alp Hya
1.9770
4100.0
94
52202
No
7
GOM_TRA_1PNPDE20120222_051946_000000473112_00034_52203_0877.N1
22-FEB-2012 05:19:46
Dark
47.000
10
Bet Cen
0.61000
28000.
94
52203
No
8
GOM_TRA_1PNPDE20120222_054105_000000463112_00034_52203_0878.N1
22-FEB-2012 05:41:05
Twi_and_stray
46.000
48
30Alp Hya
1.9770
4100.0
92
52203
No
9
GOM_TRA_1PNPDK20120222_070001_000000493112_00035_52204_5263.N1
22-FEB-2012 07:00:01
Dark
48.500
10
Bet Cen
0.61000
28000.
97
52204
No
10
GOM_TRA_1PNPDK20120222_072119_000000483112_00035_52204_5295.N1
22-FEB-2012 07:21:19
Twi_and_stray
48.000
48
30Alp Hya
1.9770
4100.0
96
52204
No
11
GOM_TRA_1PNPDK20120222_084015_000000523112_00036_52205_5296.N1
22-FEB-2012 08:40:15
Dark
51.500
10
Bet Cen
0.61000
28000.
103
52205
No
12
GOM_TRA_1PNPDK20120222_090133_000000483112_00036_52205_5331.N1
22-FEB-2012 09:01:33
Twi_and_stray
47.500
48
30Alp Hya
1.9770
4100.0
95
52205
No
13
GOM_TRA_1PNPDK20120222_102030_000000533112_00037_52206_5332.N1
22-FEB-2012 10:20:30
Dark
53.000
10
Bet Cen
0.61000
28000.
106
52206
No
14
GOM_TRA_1PNPDK20120222_104147_000000493112_00037_52206_5365.N1
22-FEB-2012 10:41:47
Twi_and_stray
48.500
48
30Alp Hya
1.9770
4100.0
97
52206
No
15
GOM_TRA_1PNPDK20120222_113202_000000363112_00037_52206_5366.N1
22-FEB-2012 11:32:02
Bright
36.000
168
17Zet Aql
2.9860
11000.
72
52206
No
16
GOM_TRA_1PNPDK20120222_120044_000000533112_00038_52207_5367.N1
22-FEB-2012 12:00:44
Dark
53.000
10
Bet Cen
0.61000
28000.
106
52207
No
17
GOM_TRA_1PNPDK20120222_131217_000000423112_00038_52207_5404.N1
22-FEB-2012 13:12:17
Bright
41.500
168
17Zet Aql
2.9860
11000.
83
52207
No
18
GOM_TRA_1PNPDK20120222_134059_000000433112_00039_52208_5405.N1
22-FEB-2012 13:40:59
Dark
42.500
10
Bet Cen
0.61000
28000.
85
52208
No
19
GOM_TRA_1PNPDK20120222_145231_000000373112_00039_52208_5438.N1
22-FEB-2012 14:52:31
Bright
37.000
168
17Zet Aql
2.9860
11000.
74
52208
No
20
GOM_TRA_1PNPDK20120222_152113_000000473112_00040_52209_5439.N1
22-FEB-2012 15:21:13
Dark
46.500
10
Bet Cen
0.61000
28000.
93
52209
No
21
GOM_TRA_1PNPDK20120222_163245_000000553112_00040_52209_5466.N1
22-FEB-2012 16:32:45
Bright
55.000
168
17Zet Aql
2.9860
11000.
110
52209
No
22
GOM_TRA_1PNPDK20120222_170128_000000433112_00041_52210_5467.N1
22-FEB-2012 17:01:28
Dark
43.000
10
Bet Cen
0.61000
28000.
86
52210
No
23
GOM_TRA_1PNPDK20120222_181259_000000383112_00041_52210_5489.N1
22-FEB-2012 18:12:59
Bright
37.500
168
17Zet Aql
2.9860
11000.
75
52210
No
24
GOM_TRA_1PNPDK20120222_184143_000000513112_00042_52211_5490.N1
22-FEB-2012 18:41:43
Dark
51.000
10
Bet Cen
0.61000
28000.
102
52211
No
25
GOM_TRA_1PNPDK20120222_184524_000000253112_00042_52211_5491.N1
22-FEB-2012 18:45:24
Dark
24.500
26
Gam Cru
1.6240
2900.0
49
52211
No
26
GOM_TRA_1PNPDK20120222_201013_000000443112_00042_52211_5511.N1
22-FEB-2012 20:10:13
Dark
44.000
178
Iot1Sco
3.0220
6550.0
88
52211
No
27
GOM_TRA_1PNPDK20120222_202157_000000463112_00043_52212_5512.N1
22-FEB-2012 20:21:57
Dark
45.500
10
Bet Cen
0.61000
28000.
91
52212
No
28
GOM_TRA_1PNPDK20120222_202538_000000273112_00043_52212_5513.N1
22-FEB-2012 20:25:38
Dark
26.500
26
Gam Cru
1.6240
2900.0
53
52212
No
29
GOM_TRA_1PNPDE20120222_215129_000000423112_00043_52212_1104.N1
22-FEB-2012 21:51:29
Dark
41.500
40
The Sco
1.8590
7100.0
83
52212
No
30
GOM_TRA_1PNPDE20120222_220212_000000473112_00044_52213_1105.N1
22-FEB-2012 22:02:12
Dark
46.500
10
Bet Cen
0.61000
28000.
93
52213
No
31
GOM_TRA_1PNPDE20120222_220553_000000283112_00044_52213_1106.N1
22-FEB-2012 22:05:53
Dark
27.500
26
Gam Cru
1.6240
2900.0
55
52213
No
32
GOM_TRA_1PNPDE20120222_233143_000000413112_00044_52213_1130.N1
22-FEB-2012 23:31:43
Dark
41.000
40
The Sco
1.8590
7100.0
82
52213
No
33
GOM_TRA_1PNPDE20120222_234226_000000433112_00045_52214_1131.N1
22-FEB-2012 23:42:26
Dark
43.000
10
Bet Cen
0.61000
28000.
86
52214
No
34
GOM_TRA_1PNPDE20120222_234607_000000293112_00045_52214_1132.N1
22-FEB-2012 23:46:07
Dark
28.500
26
Gam Cru
1.6240
2900.0
57
52214
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 These products did not use the DSA observation for DC computation:

Product name DC information
GOM_TRA_1PNPDE20120222_001903_000000513112_00031_52200_0756.N1
DC map used
GOM_TRA_1PNPDE20120222_004023_000000473112_00031_52200_0757.N1
DC map used
GOM_TRA_1PNPDE20120222_015917_000000473112_00032_52201_0788.N1
DC map used
GOM_TRA_1PNPDE20120222_022037_000000483112_00032_52201_0789.N1
DC map used
GOM_TRA_1PNPDE20120222_033932_000000523112_00033_52202_0836.N1
DC map used
GOM_TRA_1PNPDE20120222_040051_000000473112_00033_52202_0837.N1
DC map used
GOM_TRA_1PNPDE20120222_051946_000000473112_00034_52203_0877.N1
DC map used
GOM_TRA_1PNPDE20120222_054105_000000463112_00034_52203_0878.N1
DC map used
GOM_TRA_1PNPDK20120222_070001_000000493112_00035_52204_5263.N1
DC map used
GOM_TRA_1PNPDK20120222_072119_000000483112_00035_52204_5295.N1
DC map used
GOM_TRA_1PNPDK20120222_084015_000000523112_00036_52205_5296.N1
DC map used
GOM_TRA_1PNPDK20120222_090133_000000483112_00036_52205_5331.N1
DC map used
GOM_TRA_1PNPDK20120222_102030_000000533112_00037_52206_5332.N1
DC map used
GOM_TRA_1PNPDK20120222_104147_000000493112_00037_52206_5365.N1
DC map used
GOM_TRA_1PNPDK20120222_113202_000000363112_00037_52206_5366.N1
DC map used
GOM_TRA_1PNPDK20120222_120044_000000533112_00038_52207_5367.N1
DC map used
GOM_TRA_1PNPDK20120222_131217_000000423112_00038_52207_5404.N1
DC map used
GOM_TRA_1PNPDK20120222_134059_000000433112_00039_52208_5405.N1
DC map used
GOM_TRA_1PNPDK20120222_145231_000000373112_00039_52208_5438.N1
DC map used
GOM_TRA_1PNPDK20120222_152113_000000473112_00040_52209_5439.N1
DC map used
GOM_TRA_1PNPDK20120222_163245_000000553112_00040_52209_5466.N1
DC map used
GOM_TRA_1PNPDK20120222_170128_000000433112_00041_52210_5467.N1
DC map used
GOM_TRA_1PNPDK20120222_181259_000000383112_00041_52210_5489.N1
DC map used
GOM_TRA_1PNPDK20120222_184143_000000513112_00042_52211_5490.N1
DC map used
GOM_TRA_1PNPDK20120222_184524_000000253112_00042_52211_5491.N1
DC map used
GOM_TRA_1PNPDK20120222_201013_000000443112_00042_52211_5511.N1
DC map used
GOM_TRA_1PNPDK20120222_202157_000000463112_00043_52212_5512.N1
DC map used
GOM_TRA_1PNPDK20120222_202538_000000273112_00043_52212_5513.N1
DC map used
GOM_TRA_1PNPDE20120222_215129_000000423112_00043_52212_1104.N1
DC map used
GOM_TRA_1PNPDE20120222_220212_000000473112_00044_52213_1105.N1
DC map used
GOM_TRA_1PNPDE20120222_220553_000000283112_00044_52213_1106.N1
DC map used
GOM_TRA_1PNPDE20120222_233143_000000413112_00044_52213_1130.N1
DC map used
GOM_TRA_1PNPDE20120222_234226_000000433112_00045_52214_1131.N1
DC map used
GOM_TRA_1PNPDE20120222_234607_000000293112_00045_52214_1132.N1
DC map used

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:
76.4706 %
Reference spectrum computed from DB:
0.00000 %
Reference spectrum with small number of measurements:
0.00000 %
SATU data not used:
14.7059 %

 

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:
20.142
17.694
NaN
St. deviation:
17.794
8.2072
NaN
Maximum:
62.679
24.866
NaN
Minimum:
6.0462
4.4628
NaN
Number of data:
22.000
5.0000
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:
0.13208
-0.20121
-0.018511
-0.14889
St. deviation:
0.26445
0.55699
1.4730
1.7423
Maximum:
3.1000
3.5000
5.3000
6.9000
Minimum:
-2.7000
-3.8000
-6.2000
-5.8000
Number of data:
21300.
21300.
4500.0
4500.0
90Percentile:
0.40000
0.60000
1.9000
2.1000

 

7.2.2 Trend of daily SATU NEA St. deviation since 1st April 2006 (dark limb) and of daily SATU NEA 90th percentile since May 2011

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



Lower curve: 90th percentile of SATU Y axis
Upper curve: 90th percentile 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_AXVIEC20111213_163131_20111215_000000_20500101_000000
1
22-FEB-2012 00:19:03
CALIBRATION_DATABASE
GOM_CAL_AXVIEC20120130_103112_20120125_000000_20500101_000000
1
22-FEB-2012 00:19:03
LEVEL-1B_PROC_CONFIG
GOM_PR1_AXVIEC20110513_081743_20020301_000000_20500101_000000
1
22-FEB-2012 00:19:03
STAR_CATALOGUE
GOM_CAT_AXVIEC20020121_161009_20020101_000000_20200101_000000
1
22-FEB-2012 00:19:03
STELLAR_SPECTRA_DATABANK
GOM_STS_AXVIEC20091111_151504_20020101_160000_20500101_000000
1
22-FEB-2012 00:19:03
ECMWF_FILE
AUX_ECF_AXNECM20120221_062114_20120221_210000_20120222_090000
1
22-FEB-2012 00:19:03
ECMWF_FILE
AUX_ECF_AXNECM20120221_182114_20120222_030000_20120222_150000
5
22-FEB-2012 03:39:32
ECMWF_FILE
AUX_ECA_AXNECM20120222_062115_20120221_210000_20120222_090000
9
22-FEB-2012 07:00:01
ECMWF_FILE
AUX_ECF_AXNECM20120222_062115_20120222_090000_20120222_210000
12
22-FEB-2012 09:01:33
ECMWF_FILE
AUX_ECF_AXNECM20120222_062116_20120222_150000_20120223_030000
21
22-FEB-2012 16:32:45
ECMWF_FILE
AUX_ECF_AXNECM20120222_062116_20120222_210000_20120223_090000
29
22-FEB-2012 21:51:29
OPTIONAL_ECMWF_FILE
MISSING
1
22-FEB-2012 00:19:03
ORBIT_DATA_FILE
AUX_FPO_AXVPDS20120220_232939_20120220_194732_20120301_202055
1
22-FEB-2012 00:19:03
ORBIT_DATA_FILE
AUX_FPO_AXVPDS20120222_232929_20120221_191047_20120302_212428
32
22-FEB-2012 23:31:43