GOMOS Daily Report 01-MAR-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
04MAR2012 07:01:14
Data source version
GOMOS/6.01
Start time of products
01MAR2012 00:26:53
Stop time of products
01MAR2012 23:50:16
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
01-MAR-2012 01:58:04
AlpAra
147
52329
01-MAR-2012 02:07:08
BetCen
10
52329
01-MAR-2012 03:08:18
18DelCyg
144
52329
01-MAR-2012 03:38:19
AlpAra
147
52330
01-MAR-2012 03:47:22
BetCen
10
52330
01-MAR-2012 04:48:32
18DelCyg
144
52330
01-MAR-2012 05:18:33
AlpAra
147
52331
01-MAR-2012 05:27:37
BetCen
10
52331
01-MAR-2012 09:49:14
18DelCyg
144
52333
01-MAR-2012 10:19:17
AlpAra
147
52334
01-MAR-2012 10:28:20
BetCen
10
52334
01-MAR-2012 18:10:24
18DelCyg
144
52338
01-MAR-2012 18:40:30
AlpAra
147
52339
01-MAR-2012 18:49:33
BetCen
10
52339
01-MAR-2012 22:00:59
AlpAra
147
52341
01-MAR-2012 22:10:02
BetCen
10
52341
01-MAR-2012 23:11:06
18DelCyg
144
52341

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_1PNPDE20120301_002653_000000473112_00146_52315_3781.N1
01-MAR-2012 00:26:53
Dark
46.500
10
Bet Cen
0.61000
28000.
93
52315
No
2
GOM_TRA_1PNPDK20120301_062846_000000363112_00149_52318_8465.N1
01-MAR-2012 06:28:46
Bright
35.500
144
18Del Cyg
2.8600
11000.
71
52318
No
3
GOM_TRA_1PNPDK20120301_065848_000000413112_00149_52318_8466.N1
01-MAR-2012 06:58:48
Dark
41.000
147
Alp Ara
2.8770
26000.
82
52318
No
4
GOM_TRA_1PNPDK20120301_070752_000000423112_00150_52319_8467.N1
01-MAR-2012 07:07:52
Dark
41.500
10
Bet Cen
0.61000
28000.
83
52319
No
5
GOM_TRA_1PNPDK20120301_080901_000000363112_00150_52319_8515.N1
01-MAR-2012 08:09:01
Bright
36.000
144
18Del Cyg
2.8600
11000.
72
52319
No
6
GOM_TRA_1PNPDK20120301_083904_000000403112_00150_52319_8516.N1
01-MAR-2012 08:39:04
Dark
40.000
147
Alp Ara
2.8770
26000.
80
52319
No
7
GOM_TRA_1PNPDK20120301_084807_000000443112_00151_52320_8517.N1
01-MAR-2012 08:48:07
Dark
44.000
10
Bet Cen
0.61000
28000.
88
52320
No
8
GOM_TRA_1PNPDK20120301_094915_000000363112_00151_52320_8547.N1
01-MAR-2012 09:49:15
Bright
36.000
144
18Del Cyg
2.8600
11000.
72
52320
No
9
GOM_TRA_1PNPDK20120301_101918_000000393112_00151_52320_8548.N1
01-MAR-2012 10:19:18
Dark
38.500
147
Alp Ara
2.8770
26000.
77
52320
No
10
GOM_TRA_1PNPDK20120301_102822_000000483112_00152_52321_8549.N1
01-MAR-2012 10:28:22
Dark
48.000
10
Bet Cen
0.61000
28000.
96
52321
No
11
GOM_TRA_1PNPDK20120301_112928_000000373112_00152_52321_8587.N1
01-MAR-2012 11:29:28
Bright
36.500
144
18Del Cyg
2.8600
11000.
73
52321
No
12
GOM_TRA_1PNPDK20120301_115932_000000413112_00152_52321_8588.N1
01-MAR-2012 11:59:32
Dark
41.000
147
Alp Ara
2.8770
26000.
82
52321
No
13
GOM_TRA_1PNPDK20120301_120835_000000443112_00153_52322_8589.N1
01-MAR-2012 12:08:35
Dark
44.000
10
Bet Cen
0.61000
28000.
88
52322
No
14
GOM_TRA_1PNPDK20120301_130942_000000373112_00153_52322_8627.N1
01-MAR-2012 13:09:42
Bright
37.000
144
18Del Cyg
2.8600
11000.
74
52322
No
15
GOM_TRA_1PNPDK20120301_133946_000000413112_00153_52322_8628.N1
01-MAR-2012 13:39:46
Dark
40.500
147
Alp Ara
2.8770
26000.
81
52322
No
16
GOM_TRA_1PNPDK20120301_134849_000000423112_00154_52323_8629.N1
01-MAR-2012 13:48:49
Dark
41.500
10
Bet Cen
0.61000
28000.
83
52323
No
17
GOM_TRA_1PNPDK20120301_144956_000000413112_00154_52323_8676.N1
01-MAR-2012 14:49:56
Bright
41.000
144
18Del Cyg
2.8600
11000.
82
52323
No
18
GOM_TRA_1PNPDK20120301_152001_000000413112_00154_52323_8677.N1
01-MAR-2012 15:20:01
Dark
41.000
147
Alp Ara
2.8770
26000.
82
52323
No
19
GOM_TRA_1PNPDK20120301_152904_000000423112_00155_52324_8678.N1
01-MAR-2012 15:29:04
Dark
41.500
10
Bet Cen
0.61000
28000.
83
52324
No
20
GOM_TRA_1PNPDK20120301_163010_000000373112_00155_52324_8724.N1
01-MAR-2012 16:30:10
Bright
37.000
144
18Del Cyg
2.8600
11000.
74
52324
No
21
GOM_TRA_1PNPDK20120301_170016_000000423112_00155_52324_8725.N1
01-MAR-2012 17:00:16
Dark
41.500
147
Alp Ara
2.8770
26000.
83
52324
No
22
GOM_TRA_1PNPDK20120301_170918_000000433112_00156_52325_8726.N1
01-MAR-2012 17:09:18
Dark
43.000
10
Bet Cen
0.61000
28000.
86
52325
No
23
GOM_TRA_1PNPDK20120301_181024_000000363112_00156_52325_8743.N1
01-MAR-2012 18:10:24
Bright
36.000
144
18Del Cyg
2.8600
11000.
72
52325
No
24
GOM_TRA_1PNPDK20120301_184030_000000403112_00156_52325_8744.N1
01-MAR-2012 18:40:30
Dark
39.500
147
Alp Ara
2.8770
26000.
79
52325
No
25
GOM_TRA_1PNPDK20120301_184933_000000533112_00157_52326_8745.N1
01-MAR-2012 18:49:33
Dark
52.500
10
Bet Cen
0.61000
28000.
105
52326
No
26
GOM_TRA_1PNPDK20120301_195038_000000363112_00157_52326_8794.N1
01-MAR-2012 19:50:38
Bright
35.500
144
18Del Cyg
2.8600
11000.
71
52326
No
27
GOM_TRA_1PNPDK20120301_202045_000000413112_00157_52326_8795.N1
01-MAR-2012 20:20:45
Dark
41.000
147
Alp Ara
2.8770
26000.
82
52326
No
28
GOM_TRA_1PNPDK20120301_202948_000000473112_00158_52327_8796.N1
01-MAR-2012 20:29:48
Dark
47.000
10
Bet Cen
0.61000
28000.
94
52327
No
29
GOM_TRA_1PNPDE20120301_213052_000000363112_00158_52327_3958.N1
01-MAR-2012 21:30:52
Bright
35.500
144
18Del Cyg
2.8600
11000.
71
52327
No
30
GOM_TRA_1PNPDE20120301_220059_000000433112_00158_52327_3992.N1
01-MAR-2012 22:00:59
Dark
42.500
147
Alp Ara
2.8770
26000.
85
52327
No
31
GOM_TRA_1PNPDE20120301_221002_000000473112_00159_52328_3993.N1
01-MAR-2012 22:10:02
Dark
46.500
10
Bet Cen
0.61000
28000.
93
52328
No
32
GOM_TRA_1PNPDE20120301_231106_000000363112_00159_52328_3994.N1
01-MAR-2012 23:11:06
Bright
36.000
144
18Del Cyg
2.8600
11000.
72
52328
No
33
GOM_TRA_1PNPDE20120301_234114_000000423112_00159_52328_4020.N1
01-MAR-2012 23:41:14
Dark
41.500
147
Alp Ara
2.8770
26000.
83
52328
No
34
GOM_TRA_1PNPDE20120301_235016_000000433112_00160_52329_4021.N1
01-MAR-2012 23:50:16
Dark
42.500
10
Bet Cen
0.61000
28000.
85
52329
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_1PNPDE20120301_002653_000000473112_00146_52315_3781.N1
DC map used
GOM_TRA_1PNPDK20120301_062846_000000363112_00149_52318_8465.N1
DC map used
GOM_TRA_1PNPDK20120301_065848_000000413112_00149_52318_8466.N1
DC map used
GOM_TRA_1PNPDK20120301_070752_000000423112_00150_52319_8467.N1
DC map used
GOM_TRA_1PNPDK20120301_080901_000000363112_00150_52319_8515.N1
DC map used
GOM_TRA_1PNPDK20120301_083904_000000403112_00150_52319_8516.N1
DC map used
GOM_TRA_1PNPDK20120301_084807_000000443112_00151_52320_8517.N1
DC map used
GOM_TRA_1PNPDK20120301_094915_000000363112_00151_52320_8547.N1
DC map used
GOM_TRA_1PNPDK20120301_101918_000000393112_00151_52320_8548.N1
DC map used
GOM_TRA_1PNPDK20120301_102822_000000483112_00152_52321_8549.N1
DC map used
GOM_TRA_1PNPDK20120301_112928_000000373112_00152_52321_8587.N1
DC map used
GOM_TRA_1PNPDK20120301_115932_000000413112_00152_52321_8588.N1
DC map used
GOM_TRA_1PNPDK20120301_120835_000000443112_00153_52322_8589.N1
DC map used
GOM_TRA_1PNPDK20120301_130942_000000373112_00153_52322_8627.N1
DC map used
GOM_TRA_1PNPDK20120301_133946_000000413112_00153_52322_8628.N1
DC map used
GOM_TRA_1PNPDK20120301_134849_000000423112_00154_52323_8629.N1
DC map used
GOM_TRA_1PNPDK20120301_144956_000000413112_00154_52323_8676.N1
DC map used
GOM_TRA_1PNPDK20120301_152001_000000413112_00154_52323_8677.N1
DC map used
GOM_TRA_1PNPDK20120301_152904_000000423112_00155_52324_8678.N1
DC map used
GOM_TRA_1PNPDK20120301_163010_000000373112_00155_52324_8724.N1
DC map used
GOM_TRA_1PNPDK20120301_170016_000000423112_00155_52324_8725.N1
DC map used
GOM_TRA_1PNPDK20120301_170918_000000433112_00156_52325_8726.N1
DC map used
GOM_TRA_1PNPDK20120301_181024_000000363112_00156_52325_8743.N1
DC map used
GOM_TRA_1PNPDK20120301_184030_000000403112_00156_52325_8744.N1
DC map used
GOM_TRA_1PNPDK20120301_184933_000000533112_00157_52326_8745.N1
DC map used
GOM_TRA_1PNPDK20120301_195038_000000363112_00157_52326_8794.N1
DC map used
GOM_TRA_1PNPDK20120301_202045_000000413112_00157_52326_8795.N1
DC map used
GOM_TRA_1PNPDK20120301_202948_000000473112_00158_52327_8796.N1
DC map used
GOM_TRA_1PNPDE20120301_213052_000000363112_00158_52327_3958.N1
DC map used
GOM_TRA_1PNPDE20120301_220059_000000433112_00158_52327_3992.N1
DC map used
GOM_TRA_1PNPDE20120301_221002_000000473112_00159_52328_3993.N1
DC map used
GOM_TRA_1PNPDE20120301_231106_000000363112_00159_52328_3994.N1
DC map used
GOM_TRA_1PNPDE20120301_234114_000000423112_00159_52328_4020.N1
DC map used
GOM_TRA_1PNPDE20120301_235016_000000433112_00160_52329_4021.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:
55.8824 %
Reference spectrum computed from DB:
0.00000 %
Reference spectrum with small number of measurements:
0.00000 %
SATU data not used:
32.3529 %

 

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:
16.679
22.721
NaN
St. deviation:
3.8564
2.7773
NaN
Maximum:
21.210
25.072
NaN
Minimum:
6.6161
15.092
NaN
Number of data:
23.000
11.000
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:
0.15025
-0.21975
0.073540
-0.18862
St. deviation:
0.65151
0.77834
1.4770
1.7067
Maximum:
4.3000
5.4000
5.1000
6.4000
Minimum:
-4.7000
-4.6000
-6.6000
-6.6000
Number of data:
21850.
21850.
9350.0
9350.0
90Percentile:
1.1000
0.80000
2.0000
2.0000

 

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
01-MAR-2012 00:26:53
CALIBRATION_DATABASE
GOM_CAL_AXVIEC20120130_103112_20120125_000000_20500101_000000
1
01-MAR-2012 00:26:53
LEVEL-1B_PROC_CONFIG
GOM_PR1_AXVIEC20110513_081743_20020301_000000_20500101_000000
1
01-MAR-2012 00:26:53
STAR_CATALOGUE
GOM_CAT_AXVIEC20020121_161009_20020101_000000_20200101_000000
1
01-MAR-2012 00:26:53
STELLAR_SPECTRA_DATABANK
GOM_STS_AXVIEC20091111_151504_20020101_160000_20500101_000000
1
01-MAR-2012 00:26:53
ECMWF_FILE
AUX_ECF_AXNECM20120229_062116_20120229_210000_20120301_090000
1
01-MAR-2012 00:26:53
ECMWF_FILE
AUX_ECA_AXNECM20120301_062114_20120229_210000_20120301_090000
2
01-MAR-2012 06:28:46
ECMWF_FILE
AUX_ECF_AXNECM20120301_062115_20120301_090000_20120301_210000
8
01-MAR-2012 09:49:15
ECMWF_FILE
AUX_ECF_AXNECM20120301_062115_20120301_150000_20120302_030000
20
01-MAR-2012 16:30:10
ECMWF_FILE
AUX_ECA_AXNECM20120301_182113_20120301_090000_20120301_210000
23
01-MAR-2012 18:10:24
ECMWF_FILE
AUX_ECF_AXNECM20120301_062115_20120301_210000_20120302_090000
29
01-MAR-2012 21:30:52
OPTIONAL_ECMWF_FILE
MISSING
1
01-MAR-2012 00:26:53
ORBIT_DATA_FILE
AUX_FPO_AXVPDS20120229_233503_20120229_091606_20120310_112946
1
01-MAR-2012 00:26:53
ORBIT_DATA_FILE
AUX_FPO_AXVPDS20120301_112113_20120229_191729_20120310_213110
11
01-MAR-2012 11:29:28