GOMOS Daily Report 05-APR-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
07APR2012 07:00:43
Data source version
GOMOS/6.01
Start time of products
05APR2012 01:01:31
Stop time of products
05APR2012 22:34:13
Store outputs in DB
Yes
Nb of level 1b prods
24
Nb of prods with errors
1

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
05-APR-2012 01:00:49
7DelCrv
0
52818
05-APR-2012 01:21:14
64GamUMa
0
52818
05-APR-2012 02:41:03
7DelCrv
0
52819
05-APR-2012 03:01:28
64GamUMa
0
52819
05-APR-2012 04:21:17
7DelCrv
0
52820
05-APR-2012 05:51:07
ZetCen
0
52821
05-APR-2012 06:01:31
7DelCrv
0
52821
05-APR-2012 07:31:21
ZetCen
0
52822
05-APR-2012 07:41:45
7DelCrv
0
52822
05-APR-2012 09:11:36
ZetCen
0
52823
05-APR-2012 09:21:59
7DelCrv
0
52823
05-APR-2012 10:51:50
ZetCen
0
52824
05-APR-2012 11:02:13
7DelCrv
0
52824
05-APR-2012 12:32:04
ZetCen
0
52825
05-APR-2012 12:42:27
7DelCrv
0
52825
05-APR-2012 14:12:19
ZetCen
0
52826
05-APR-2012 14:22:41
7DelCrv
0
52826
05-APR-2012 15:52:33
ZetCen
0
52827
05-APR-2012 16:02:55
7DelCrv
0
52827
05-APR-2012 17:32:47
ZetCen
0
52828
05-APR-2012 17:43:09
7DelCrv
0
52828
05-APR-2012 19:13:02
ZetCen
0
52829
05-APR-2012 20:53:16
ZetCen
0
52830
05-APR-2012 22:33:30
ZetCen
0
52831

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_1PNPDE20120405_010131_000000283113_00218_52818_6521.N1
05-APR-2012 01:01:31
Twi_and_stray
28.000
163
7Del Crv
2.9450
11000.
56
52818
No
2
GOM_TRA_1PNPDE20120405_012156_000000373113_00218_52818_6522.N1
05-APR-2012 01:21:56
Bright
37.000
87
64Gam UMa
2.4330
11000.
74
52818
No
3
GOM_TRA_1PNPDE20120405_024145_000000333113_00219_52819_6557.N1
05-APR-2012 02:41:45
Twi_and_stray
33.000
163
7Del Crv
2.9450
11000.
66
52819
No
4
GOM_TRA_1PNPDE20120405_030210_000000353113_00219_52819_6558.N1
05-APR-2012 03:02:10
Bright
35.000
87
64Gam UMa
2.4330
11000.
70
52819
No
5
GOM_TRA_1PNPDE20120405_042159_000000383113_00220_52820_6609.N1
05-APR-2012 04:21:59
Twi_and_stray
37.500
163
7Del Crv
2.9450
11000.
75
52820
No
6
GOM_TRA_1PNPDE20120405_055149_000000263113_00221_52821_6651.N1
05-APR-2012 05:51:49
Straylight
26.000
95
Zet Cen
2.5450
26000.
52
52821
No
7
GOM_TRA_1PNPDE20120405_060213_000000423113_00221_52821_6652.N1
05-APR-2012 06:02:13
Twi_and_stray
41.500
163
7Del Crv
2.9450
11000.
83
52821
No
8
GOM_TRA_1PNPDK20120405_073204_000000293113_00222_52822_3825.N1
05-APR-2012 07:32:04
Straylight
29.000
95
Zet Cen
2.5450
26000.
58
52822
No
9
GOM_TRA_1PNPDK20120405_074227_000000423113_00222_52822_3826.N1
05-APR-2012 07:42:27
Twi_and_stray
42.000
163
7Del Crv
2.9450
11000.
84
52822
No
10
GOM_TRA_1PNPDK20120405_091218_000000323113_00223_52823_3869.N1
05-APR-2012 09:12:18
Straylight
32.000
95
Zet Cen
2.5450
26000.
64
52823
No
11
GOM_TRA_1PNPDK20120405_092241_000000413113_00223_52823_3870.N1
05-APR-2012 09:22:41
Twi_and_stray
41.000
163
7Del Crv
2.9450
11000.
82
52823
No
12
GOM_TRA_1PNPDK20120405_105232_000000343113_00224_52824_3921.N1
05-APR-2012 10:52:32
Straylight
34.000
95
Zet Cen
2.5450
26000.
68
52824
No
13
GOM_TRA_1PNPDK20120405_110255_000000413113_00224_52824_3922.N1
05-APR-2012 11:02:55
Twi_and_stray
41.000
163
7Del Crv
2.9450
11000.
82
52824
No
14
GOM_TRA_1PNPDK20120405_123247_000000373113_00225_52825_3975.N1
05-APR-2012 12:32:47
Straylight
37.000
95
Zet Cen
2.5450
26000.
74
52825
No
15
GOM_TRA_1PNPDK20120405_124310_000000413113_00225_52825_4208.N1
05-APR-2012 12:43:10
Twi_and_stray
40.500
163
7Del Crv
2.9450
11000.
81
52825
Yes
16
GOM_TRA_1PNPDK20120405_141301_000000393113_00226_52826_4209.N1
05-APR-2012 14:13:01
Straylight
38.500
95
Zet Cen
2.5450
26000.
77
52826
No
17
GOM_TRA_1PNPDK20120405_142324_000000423113_00226_52826_4207.N1
05-APR-2012 14:23:24
Twi_and_stray
42.000
163
7Del Crv
2.9450
11000.
84
52826
No
18
GOM_TRA_1PNPDK20120405_155315_000000403113_00227_52827_4208.N1
05-APR-2012 15:53:15
Straylight
40.000
95
Zet Cen
2.5450
26000.
80
52827
No
19
GOM_TRA_1PNPDK20120405_160338_000000393113_00227_52827_4103.N1
05-APR-2012 16:03:38
Twi_and_stray
38.500
163
7Del Crv
2.9450
11000.
77
52827
No
20
GOM_TRA_1PNPDK20120405_173330_000000423113_00228_52828_4104.N1
05-APR-2012 17:33:30
Straylight
41.500
95
Zet Cen
2.5450
26000.
83
52828
No
21
GOM_TRA_1PNPDK20120405_174352_000000413113_00228_52828_4124.N1
05-APR-2012 17:43:52
Twi_and_stray
41.000
163
7Del Crv
2.9450
11000.
82
52828
No
22
GOM_TRA_1PNPDK20120405_191344_000000443113_00229_52829_4160.N1
05-APR-2012 19:13:44
Straylight
44.000
95
Zet Cen
2.5450
26000.
88
52829
No
23
GOM_TRA_1PNPDE20120405_205358_000000413113_00230_52830_6917.N1
05-APR-2012 20:53:58
Straylight
40.500
95
Zet Cen
2.5450
26000.
81
52830
No
24
GOM_TRA_1PNPDE20120405_223413_000000423113_00231_52831_6947.N1
05-APR-2012 22:34:13
Straylight
42.000
95
Zet Cen
2.5450
26000.
84
52831
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_1PNPDE20120405_010131_000000283113_00218_52818_6521.N1
DC map used
GOM_TRA_1PNPDE20120405_012156_000000373113_00218_52818_6522.N1
DC map used
GOM_TRA_1PNPDE20120405_024145_000000333113_00219_52819_6557.N1
DC map used
GOM_TRA_1PNPDE20120405_030210_000000353113_00219_52819_6558.N1
DC map used
GOM_TRA_1PNPDE20120405_042159_000000383113_00220_52820_6609.N1
DC map used
GOM_TRA_1PNPDE20120405_055149_000000263113_00221_52821_6651.N1
DC map used
GOM_TRA_1PNPDE20120405_060213_000000423113_00221_52821_6652.N1
DC map used
GOM_TRA_1PNPDK20120405_073204_000000293113_00222_52822_3825.N1
DC map used
GOM_TRA_1PNPDK20120405_074227_000000423113_00222_52822_3826.N1
DC map used
GOM_TRA_1PNPDK20120405_091218_000000323113_00223_52823_3869.N1
DC map used
GOM_TRA_1PNPDK20120405_092241_000000413113_00223_52823_3870.N1
DC map used
GOM_TRA_1PNPDK20120405_105232_000000343113_00224_52824_3921.N1
DC map used
GOM_TRA_1PNPDK20120405_110255_000000413113_00224_52824_3922.N1
DC map used
GOM_TRA_1PNPDK20120405_123247_000000373113_00225_52825_3975.N1
DC map used
GOM_TRA_1PNPDK20120405_124310_000000413113_00225_52825_4208.N1
DC map with no T dep.
GOM_TRA_1PNPDK20120405_141301_000000393113_00226_52826_4209.N1
DC map used
GOM_TRA_1PNPDK20120405_142324_000000423113_00226_52826_4207.N1
DC map used
GOM_TRA_1PNPDK20120405_155315_000000403113_00227_52827_4208.N1
DC map used
GOM_TRA_1PNPDK20120405_160338_000000393113_00227_52827_4103.N1
DC map used
GOM_TRA_1PNPDK20120405_173330_000000423113_00228_52828_4104.N1
DC map used
GOM_TRA_1PNPDK20120405_174352_000000413113_00228_52828_4124.N1
DC map used
GOM_TRA_1PNPDK20120405_191344_000000443113_00229_52829_4160.N1
DC map used
GOM_TRA_1PNPDE20120405_205358_000000413113_00230_52830_6917.N1
DC map used
GOM_TRA_1PNPDE20120405_223413_000000423113_00231_52831_6947.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:
91.3044 %
Reference spectrum computed from DB:
0.00000 %
Reference spectrum with small number of measurements:
0.00000 %
SATU data not used:
8.69565 %

 

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
23.640
NaN
St. deviation:
NaN
3.2521
NaN
Maximum:
NaN
25.940
NaN
Minimum:
NaN
21.341
NaN
Number of data:
NaN
2.0000
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
0.11529
-0.55065
St. deviation:
NaN
NaN
1.0672
1.3005
Maximum:
NaN
NaN
3.4000
4.0000
Minimum:
NaN
NaN
-3.0000
-6.4000
Number of data:
NaN
NaN
1700.0
1700.0
90Percentile:
NaN
NaN
1.5000
1.2000

 

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
05-APR-2012 01:01:31
CALIBRATION_DATABASE
GOM_CAL_AXVIEC20120316_091957_20120315_000000_20500101_000000
1
05-APR-2012 01:01:31
LEVEL-1B_PROC_CONFIG
GOM_PR1_AXVIEC20110513_081743_20020301_000000_20500101_000000
1
05-APR-2012 01:01:31
STAR_CATALOGUE
GOM_CAT_AXVIEC20020121_161009_20020101_000000_20200101_000000
1
05-APR-2012 01:01:31
STELLAR_SPECTRA_DATABANK
GOM_STS_AXVIEC20091111_151504_20020101_160000_20500101_000000
1
05-APR-2012 01:01:31
ECMWF_FILE
AUX_ECF_AXNECM20120404_062913_20120404_210000_20120405_090000
1
05-APR-2012 01:01:31
ECMWF_FILE
AUX_ECF_AXNECM20120404_180618_20120405_030000_20120405_150000
5
05-APR-2012 04:21:59
ECMWF_FILE
AUX_ECA_AXNECM20120405_062114_20120404_210000_20120405_090000
6
05-APR-2012 05:51:49
ECMWF_FILE
AUX_ECF_AXNECM20120405_062114_20120405_090000_20120405_210000
10
05-APR-2012 09:12:18
ECMWF_FILE
AUX_ECA_AXNECM20120405_181205_20120405_090000_20120405_210000
15
05-APR-2012 12:43:10
ECMWF_FILE
AUX_ECF_AXNECM20120405_062115_20120405_150000_20120406_030000
19
05-APR-2012 16:03:38
ECMWF_FILE
AUX_ECA_AXNECM20120405_181205_20120405_090000_20120405_210000
21
05-APR-2012 17:43:52
ECMWF_FILE
AUX_ECF_AXNECM20120405_062115_20120405_210000_20120406_090000
24
05-APR-2012 22:34:13
OPTIONAL_ECMWF_FILE
MISSING
1
05-APR-2012 01:01:31
ORBIT_DATA_FILE
AUX_FPO_AXVPDS20120404_102910_20120404_075241_20120414_100621
1
05-APR-2012 01:01:31
ORBIT_DATA_FILE
AUX_FPO_AXVPDS20120405_103205_20120404_193419_20120414_200745
12
05-APR-2012 10:52:32