GOMOS Daily Report 31-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
02APR2012 07:00:41
Data source version
GOMOS/6.01
Start time of products
31MAR2012 00:33:51
Stop time of products
31MAR2012 23:57:13
Store outputs in DB
Yes
Nb of level 1b prods
33
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)

No missing products.

2.4 Summary of processed GOM_TRA_1P products

!Warning: No products without errors in DARK limb contitions found
Nr Filename UTC Start time Limb Duration Star Id Star Name Star Mag Star Temp Nb Meas Orbit Prod. error
1
GOM_TRA_1PNPDE20120331_003351_000000383113_00146_52746_4780.N1
31-MAR-2012 00:33:51
Straylight
38.000
95
Zet Cen
2.5450
26000.
76
52746
No
2
GOM_TRA_1PNPDE20120331_010527_000000393113_00146_52746_4781.N1
31-MAR-2012 01:05:27
Bright
38.500
87
64Gam UMa
2.4330
11000.
77
52746
No
3
GOM_TRA_1PNPDE20120331_021406_000000413113_00147_52747_4800.N1
31-MAR-2012 02:14:06
Straylight
41.000
95
Zet Cen
2.5450
26000.
82
52747
No
4
GOM_TRA_1PNPDE20120331_024540_000000393113_00147_52747_4801.N1
31-MAR-2012 02:45:40
Bright
38.500
87
64Gam UMa
2.4330
11000.
77
52747
No
5
GOM_TRA_1PNPDE20120331_035420_000000423113_00148_52748_4846.N1
31-MAR-2012 03:54:20
Straylight
42.000
95
Zet Cen
2.5450
26000.
84
52748
No
6
GOM_TRA_1PNPDE20120331_042554_000000383113_00148_52748_4847.N1
31-MAR-2012 04:25:54
Bright
38.000
87
64Gam UMa
2.4330
11000.
76
52748
No
7
GOM_TRA_1PNPDE20120331_053435_000000413113_00149_52749_4888.N1
31-MAR-2012 05:34:35
Straylight
41.000
95
Zet Cen
2.5450
26000.
82
52749
No
8
GOM_TRA_1PNPDE20120331_054313_000000263113_00149_52749_4889.N1
31-MAR-2012 05:43:13
Twi_and_stray
26.000
106
9Bet Crv
2.6480
5600.0
52
52749
No
9
GOM_TRA_1PNPDE20120331_060608_000000393113_00149_52749_4890.N1
31-MAR-2012 06:06:08
Bright
38.500
87
64Gam UMa
2.4330
11000.
77
52749
No
10
GOM_TRA_1PNPDK20120331_071449_000000423113_00150_52750_1716.N1
31-MAR-2012 07:14:49
Straylight
42.000
95
Zet Cen
2.5450
26000.
84
52750
No
11
GOM_TRA_1PNPDK20120331_072327_000000303113_00150_52750_1717.N1
31-MAR-2012 07:23:27
Twi_and_stray
29.500
106
9Bet Crv
2.6480
5600.0
59
52750
No
12
GOM_TRA_1PNPDK20120331_074622_000000383113_00150_52750_1760.N1
31-MAR-2012 07:46:22
Bright
38.000
87
64Gam UMa
2.4330
11000.
76
52750
No
13
GOM_TRA_1PNPDK20120331_085504_000000423113_00151_52751_1761.N1
31-MAR-2012 08:55:04
Straylight
41.500
95
Zet Cen
2.5450
26000.
83
52751
No
14
GOM_TRA_1PNPDK20120331_090342_000000343113_00151_52751_1762.N1
31-MAR-2012 09:03:42
Twi_and_stray
33.500
106
9Bet Crv
2.6480
5600.0
67
52751
No
15
GOM_TRA_1PNPDK20120331_092636_000000383113_00151_52751_1796.N1
31-MAR-2012 09:26:36
Bright
37.500
87
64Gam UMa
2.4330
11000.
75
52751
No
16
GOM_TRA_1PNPDK20120331_103518_000000453113_00152_52752_1797.N1
31-MAR-2012 10:35:18
Straylight
44.500
95
Zet Cen
2.5450
26000.
89
52752
No
17
GOM_TRA_1PNPDK20120331_104356_000000383113_00152_52752_1798.N1
31-MAR-2012 10:43:56
Twi_and_stray
37.500
106
9Bet Crv
2.6480
5600.0
75
52752
No
18
GOM_TRA_1PNPDK20120331_110650_000000383113_00152_52752_1839.N1
31-MAR-2012 11:06:50
Bright
37.500
87
64Gam UMa
2.4330
11000.
75
52752
No
19
GOM_TRA_1PNPDK20120331_121532_000000433113_00153_52753_1840.N1
31-MAR-2012 12:15:32
Straylight
42.500
95
Zet Cen
2.5450
26000.
85
52753
No
20
GOM_TRA_1PNPDK20120331_122410_000000423113_00153_52753_1841.N1
31-MAR-2012 12:24:10
Twi_and_stray
41.500
106
9Bet Crv
2.6480
5600.0
83
52753
No
21
GOM_TRA_1PNPDK20120331_135547_000000413113_00154_52754_1892.N1
31-MAR-2012 13:55:47
Straylight
40.500
95
Zet Cen
2.5450
26000.
81
52754
No
22
GOM_TRA_1PNPDK20120331_140424_000000453113_00154_52754_1893.N1
31-MAR-2012 14:04:24
Twi_and_stray
44.500
106
9Bet Crv
2.6480
5600.0
89
52754
No
23
GOM_TRA_1PNPDK20120331_153601_000000423113_00155_52755_1929.N1
31-MAR-2012 15:36:01
Straylight
41.500
95
Zet Cen
2.5450
26000.
83
52755
No
24
GOM_TRA_1PNPDK20120331_154438_000000473113_00155_52755_1969.N1
31-MAR-2012 15:44:38
Twi_and_stray
47.000
106
9Bet Crv
2.6480
5600.0
94
52755
No
25
GOM_TRA_1PNPDK20120331_171615_000000423113_00156_52756_1970.N1
31-MAR-2012 17:16:15
Straylight
41.500
95
Zet Cen
2.5450
26000.
83
52756
No
26
GOM_TRA_1PNPDK20120331_172452_000000473113_00156_52756_1999.N1
31-MAR-2012 17:24:52
Twi_and_stray
46.500
106
9Bet Crv
2.6480
5600.0
93
52756
No
27
GOM_TRA_1PNPDK20120331_185630_000000423113_00157_52757_2028.N1
31-MAR-2012 18:56:30
Straylight
41.500
95
Zet Cen
2.5450
26000.
83
52757
No
28
GOM_TRA_1PNPDK20120331_190506_000000463113_00157_52757_2029.N1
31-MAR-2012 19:05:06
Twi_and_stray
46.000
106
9Bet Crv
2.6480
5600.0
92
52757
No
29
GOM_TRA_1PNPDE20120331_203644_000000433113_00158_52758_5072.N1
31-MAR-2012 20:36:44
Straylight
42.500
95
Zet Cen
2.5450
26000.
85
52758
No
30
GOM_TRA_1PNPDE20120331_204520_000000473113_00158_52758_5073.N1
31-MAR-2012 20:45:20
Twi_and_stray
47.000
106
9Bet Crv
2.6480
5600.0
94
52758
No
31
GOM_TRA_1PNPDE20120331_221659_000000423113_00159_52759_5098.N1
31-MAR-2012 22:16:59
Straylight
42.000
95
Zet Cen
2.5450
26000.
84
52759
No
32
GOM_TRA_1PNPDE20120331_222534_000000453113_00159_52759_5099.N1
31-MAR-2012 22:25:34
Twi_and_stray
44.500
106
9Bet Crv
2.6480
5600.0
89
52759
No
33
GOM_TRA_1PNPDE20120331_235713_000000423113_00160_52760_5124.N1
31-MAR-2012 23:57:13
Straylight
42.000
95
Zet Cen
2.5450
26000.
84
52760
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_1PNPDE20120331_003351_000000383113_00146_52746_4780.N1
DC map used
GOM_TRA_1PNPDE20120331_010527_000000393113_00146_52746_4781.N1
DC map used
GOM_TRA_1PNPDE20120331_021406_000000413113_00147_52747_4800.N1
DC map used
GOM_TRA_1PNPDE20120331_024540_000000393113_00147_52747_4801.N1
DC map used
GOM_TRA_1PNPDE20120331_035420_000000423113_00148_52748_4846.N1
DC map used
GOM_TRA_1PNPDE20120331_042554_000000383113_00148_52748_4847.N1
DC map used
GOM_TRA_1PNPDE20120331_053435_000000413113_00149_52749_4888.N1
DC map used
GOM_TRA_1PNPDE20120331_054313_000000263113_00149_52749_4889.N1
DC map used
GOM_TRA_1PNPDE20120331_060608_000000393113_00149_52749_4890.N1
DC map used
GOM_TRA_1PNPDK20120331_071449_000000423113_00150_52750_1716.N1
DC map used
GOM_TRA_1PNPDK20120331_072327_000000303113_00150_52750_1717.N1
DC map used
GOM_TRA_1PNPDK20120331_074622_000000383113_00150_52750_1760.N1
DC map used
GOM_TRA_1PNPDK20120331_085504_000000423113_00151_52751_1761.N1
DC map used
GOM_TRA_1PNPDK20120331_090342_000000343113_00151_52751_1762.N1
DC map used
GOM_TRA_1PNPDK20120331_092636_000000383113_00151_52751_1796.N1
DC map used
GOM_TRA_1PNPDK20120331_103518_000000453113_00152_52752_1797.N1
DC map used
GOM_TRA_1PNPDK20120331_104356_000000383113_00152_52752_1798.N1
DC map used
GOM_TRA_1PNPDK20120331_110650_000000383113_00152_52752_1839.N1
DC map used
GOM_TRA_1PNPDK20120331_121532_000000433113_00153_52753_1840.N1
DC map used
GOM_TRA_1PNPDK20120331_122410_000000423113_00153_52753_1841.N1
DC map used
GOM_TRA_1PNPDK20120331_135547_000000413113_00154_52754_1892.N1
DC map used
GOM_TRA_1PNPDK20120331_140424_000000453113_00154_52754_1893.N1
DC map used
GOM_TRA_1PNPDK20120331_153601_000000423113_00155_52755_1929.N1
DC map used
GOM_TRA_1PNPDK20120331_154438_000000473113_00155_52755_1969.N1
DC map used
GOM_TRA_1PNPDK20120331_171615_000000423113_00156_52756_1970.N1
DC map used
GOM_TRA_1PNPDK20120331_172452_000000473113_00156_52756_1999.N1
DC map used
GOM_TRA_1PNPDK20120331_185630_000000423113_00157_52757_2028.N1
DC map used
GOM_TRA_1PNPDK20120331_190506_000000463113_00157_52757_2029.N1
DC map used
GOM_TRA_1PNPDE20120331_203644_000000433113_00158_52758_5072.N1
DC map used
GOM_TRA_1PNPDE20120331_204520_000000473113_00158_52758_5073.N1
DC map used
GOM_TRA_1PNPDE20120331_221659_000000423113_00159_52759_5098.N1
DC map used
GOM_TRA_1PNPDE20120331_222534_000000453113_00159_52759_5099.N1
DC map used
GOM_TRA_1PNPDE20120331_235713_000000423113_00160_52760_5124.N1
DC map used

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

No products without errors in DARK limb contitions found. No plot performed.
 

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:
69.6970 %
Reference spectrum computed from DB:
0.00000 %
Reference spectrum with small number of measurements:
0.00000 %
SATU data not used:
21.2121 %

 

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:
NaN
20.736
NaN
St. deviation:
NaN
0.66144
NaN
Maximum:
NaN
21.774
NaN
Minimum:
NaN
19.992
NaN
Number of data:
NaN
7.0000
NaN

 

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.

 

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:
NaN
NaN
0.12192
-0.25597
St. deviation:
NaN
NaN
1.0488
1.1861
Maximum:
NaN
NaN
4.4000
3.7000
Minimum:
NaN
NaN
-3.9000
-4.9000
Number of data:
NaN
NaN
6200.0
6200.0
90Percentile:
NaN
NaN
1.5000
1.3000

 

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
31-MAR-2012 00:33:51
CALIBRATION_DATABASE
GOM_CAL_AXVIEC20120316_091957_20120315_000000_20500101_000000
1
31-MAR-2012 00:33:51
LEVEL-1B_PROC_CONFIG
GOM_PR1_AXVIEC20110513_081743_20020301_000000_20500101_000000
1
31-MAR-2012 00:33:51
STAR_CATALOGUE
GOM_CAT_AXVIEC20020121_161009_20020101_000000_20200101_000000
1
31-MAR-2012 00:33:51
STELLAR_SPECTRA_DATABANK
GOM_STS_AXVIEC20091111_151504_20020101_160000_20500101_000000
1
31-MAR-2012 00:33:51
ECMWF_FILE
AUX_ECF_AXNECM20120330_062115_20120330_210000_20120331_090000
1
31-MAR-2012 00:33:51
ECMWF_FILE
AUX_ECF_AXNECM20120330_180306_20120331_030000_20120331_150000
5
31-MAR-2012 03:54:20
ECMWF_FILE
AUX_ECF_AXNECM20120331_062116_20120331_090000_20120331_210000
18
31-MAR-2012 11:06:50
ECMWF_FILE
AUX_ECF_AXNECM20120331_062116_20120331_150000_20120401_030000
23
31-MAR-2012 15:36:01
ECMWF_FILE
AUX_ECA_AXNECM20120331_181609_20120331_090000_20120331_210000
26
31-MAR-2012 17:24:52
ECMWF_FILE
AUX_ECF_AXNECM20120331_062117_20120331_210000_20120401_090000
31
31-MAR-2012 22:16:59
OPTIONAL_ECMWF_FILE
MISSING
1
31-MAR-2012 00:33:51
ORBIT_DATA_FILE
AUX_FPO_AXVPDS20120330_101713_20120329_195421_20120408_202746
1
31-MAR-2012 00:33:51
ORBIT_DATA_FILE
AUX_FPO_AXVPDS20120331_102114_20120330_191736_20120409_213115
21
31-MAR-2012 13:55:47