GOMOS Daily Report 27-JAN-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
29JAN2012 07:00:46
Data source version
GOMOS/6.01
Start time of products
27JAN2012 01:02:12
Stop time of products
27JAN2012 21:05:08
Store outputs in DB
Yes
Nb of level 1b prods
25
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
27-JAN-2012 01:01:36
GamLup
0
51840
27-JAN-2012 01:21:50
LamVel
0
51840
27-JAN-2012 02:41:51
GamLup
0
51841
27-JAN-2012 03:02:04
LamVel
0
51841
27-JAN-2012 04:22:06
GamLup
0
51842
27-JAN-2012 04:42:19
LamVel
0
51842
27-JAN-2012 06:02:20
GamLup
0
51843
27-JAN-2012 06:22:33
LamVel
0
51843
27-JAN-2012 07:42:35
GamLup
0
51844
27-JAN-2012 08:02:47
LamVel
0
51844
27-JAN-2012 09:22:50
GamLup
0
51845
27-JAN-2012 09:43:02
LamVel
0
51845
27-JAN-2012 11:03:04
GamLup
0
51846
27-JAN-2012 11:23:16
LamVel
0
51846
27-JAN-2012 12:43:19
GamLup
0
51847
27-JAN-2012 13:03:30
LamVel
0
51847
27-JAN-2012 14:23:34
GamLup
0
51848
27-JAN-2012 14:43:45
LamVel
0
51848
27-JAN-2012 16:03:48
GamLup
0
51849
27-JAN-2012 16:23:59
LamVel
0
51849
27-JAN-2012 17:44:03
GamLup
0
51850
27-JAN-2012 18:04:13
LamVel
0
51850
27-JAN-2012 19:24:18
GamLup
0
51851
27-JAN-2012 19:44:27
LamVel
0
51851
27-JAN-2012 21:04:32
GamLup
0
51852

2.4 Summary of processed GOM_TRA_1P products

!Warning: No products without errors in BRIGHT 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_1PNPDE20120127_010212_000000423111_00088_51826_7773.N1
27-JAN-2012 01:02:12
Dark
41.500
131
Gam Lup
2.8000
26000.
83
51826
No
2
GOM_TRA_1PNPDE20120127_012226_000000463111_00089_51827_7774.N1
27-JAN-2012 01:22:26
Dark
45.500
65
Lam Vel
2.2040
4400.0
91
51827
No
3
GOM_TRA_1PNPDE20120127_024227_000000413111_00089_51827_7810.N1
27-JAN-2012 02:42:27
Dark
41.000
131
Gam Lup
2.8000
26000.
82
51827
No
4
GOM_TRA_1PNPDE20120127_030240_000000463111_00090_51828_7811.N1
27-JAN-2012 03:02:40
Dark
45.500
65
Lam Vel
2.2040
4400.0
91
51828
No
5
GOM_TRA_1PNPDE20120127_042242_000000423111_00090_51828_7864.N1
27-JAN-2012 04:22:42
Dark
42.000
131
Gam Lup
2.8000
26000.
84
51828
No
6
GOM_TRA_1PNPDE20120127_044254_000000493111_00091_51829_7865.N1
27-JAN-2012 04:42:54
Dark
49.000
65
Lam Vel
2.2040
4400.0
98
51829
No
7
GOM_TRA_1PNPDE20120127_060256_000000433111_00091_51829_7921.N1
27-JAN-2012 06:02:56
Dark
42.500
131
Gam Lup
2.8000
26000.
85
51829
No
8
GOM_TRA_1PNPDE20120127_062309_000000473111_00092_51830_7922.N1
27-JAN-2012 06:23:09
Dark
46.500
65
Lam Vel
2.2040
4400.0
93
51830
No
9
GOM_TRA_1PNPDK20120127_074311_000000443111_00092_51830_5456.N1
27-JAN-2012 07:43:11
Dark
44.000
131
Gam Lup
2.8000
26000.
88
51830
No
10
GOM_TRA_1PNPDK20120127_080323_000000463111_00093_51831_5457.N1
27-JAN-2012 08:03:23
Dark
45.500
65
Lam Vel
2.2040
4400.0
91
51831
No
11
GOM_TRA_1PNPDK20120127_092326_000000443111_00093_51831_5456.N1
27-JAN-2012 09:23:26
Dark
43.500
131
Gam Lup
2.8000
26000.
87
51831
No
12
GOM_TRA_1PNPDK20120127_094337_000000473111_00094_51832_5457.N1
27-JAN-2012 09:43:37
Dark
47.000
65
Lam Vel
2.2040
4400.0
94
51832
No
13
GOM_TRA_1PNPDK20120127_110340_000000443111_00094_51832_5456.N1
27-JAN-2012 11:03:40
Dark
43.500
131
Gam Lup
2.8000
26000.
87
51832
No
14
GOM_TRA_1PNPDK20120127_112352_000000493111_00095_51833_5457.N1
27-JAN-2012 11:23:52
Dark
48.500
65
Lam Vel
2.2040
4400.0
97
51833
No
15
GOM_TRA_1PNPDK20120127_124355_000000443111_00095_51833_5456.N1
27-JAN-2012 12:43:55
Dark
43.500
131
Gam Lup
2.8000
26000.
87
51833
No
16
GOM_TRA_1PNPDK20120127_130406_000000483111_00096_51834_5457.N1
27-JAN-2012 13:04:06
Dark
47.500
65
Lam Vel
2.2040
4400.0
95
51834
No
17
GOM_TRA_1PNPDK20120127_142410_000000423111_00096_51834_5456.N1
27-JAN-2012 14:24:10
Dark
42.000
131
Gam Lup
2.8000
26000.
84
51834
No
18
GOM_TRA_1PNPDK20120127_144420_000000473111_00097_51835_5457.N1
27-JAN-2012 14:44:20
Dark
47.000
65
Lam Vel
2.2040
4400.0
94
51835
No
19
GOM_TRA_1PNPDK20120127_160424_000000433111_00097_51835_5456.N1
27-JAN-2012 16:04:24
Dark
42.500
131
Gam Lup
2.8000
26000.
85
51835
No
20
GOM_TRA_1PNPDK20120127_162435_000000493111_00098_51836_5457.N1
27-JAN-2012 16:24:35
Dark
48.500
65
Lam Vel
2.2040
4400.0
97
51836
No
21
GOM_TRA_1PNPDK20120127_174439_000000443111_00098_51836_5456.N1
27-JAN-2012 17:44:39
Dark
44.000
131
Gam Lup
2.8000
26000.
88
51836
No
22
GOM_TRA_1PNPDK20120127_180449_000000473111_00099_51837_5456.N1
27-JAN-2012 18:04:49
Dark
47.000
65
Lam Vel
2.2040
4400.0
94
51837
No
23
GOM_TRA_1PNPDK20120127_192454_000000423111_00099_51837_5457.N1
27-JAN-2012 19:24:54
Dark
41.500
131
Gam Lup
2.8000
26000.
83
51837
No
24
GOM_TRA_1PNPDE20120127_194503_000000473111_00100_51838_8133.N1
27-JAN-2012 19:45:03
Dark
47.000
65
Lam Vel
2.2040
4400.0
94
51838
No
25
GOM_TRA_1PNPDE20120127_210508_000000433111_00100_51838_8159.N1
27-JAN-2012 21:05:08
Dark
42.500
131
Gam Lup
2.8000
26000.
85
51838
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_1PNPDE20120127_010212_000000423111_00088_51826_7773.N1
DC map used
GOM_TRA_1PNPDE20120127_012226_000000463111_00089_51827_7774.N1
DC map used
GOM_TRA_1PNPDE20120127_024227_000000413111_00089_51827_7810.N1
DC map used
GOM_TRA_1PNPDE20120127_030240_000000463111_00090_51828_7811.N1
DC map used
GOM_TRA_1PNPDE20120127_042242_000000423111_00090_51828_7864.N1
DC map used
GOM_TRA_1PNPDE20120127_044254_000000493111_00091_51829_7865.N1
DC map used
GOM_TRA_1PNPDE20120127_060256_000000433111_00091_51829_7921.N1
DC map used
GOM_TRA_1PNPDE20120127_062309_000000473111_00092_51830_7922.N1
DC map used
GOM_TRA_1PNPDK20120127_074311_000000443111_00092_51830_5456.N1
DC map used
GOM_TRA_1PNPDK20120127_080323_000000463111_00093_51831_5457.N1
DC map used
GOM_TRA_1PNPDK20120127_092326_000000443111_00093_51831_5456.N1
DC map used
GOM_TRA_1PNPDK20120127_094337_000000473111_00094_51832_5457.N1
DC map used
GOM_TRA_1PNPDK20120127_110340_000000443111_00094_51832_5456.N1
DC map used
GOM_TRA_1PNPDK20120127_112352_000000493111_00095_51833_5457.N1
DC map used
GOM_TRA_1PNPDK20120127_124355_000000443111_00095_51833_5456.N1
DC map used
GOM_TRA_1PNPDK20120127_130406_000000483111_00096_51834_5457.N1
DC map used
GOM_TRA_1PNPDK20120127_142410_000000423111_00096_51834_5456.N1
DC map used
GOM_TRA_1PNPDK20120127_144420_000000473111_00097_51835_5457.N1
DC map used
GOM_TRA_1PNPDK20120127_160424_000000433111_00097_51835_5456.N1
DC map used
GOM_TRA_1PNPDK20120127_162435_000000493111_00098_51836_5457.N1
DC map used
GOM_TRA_1PNPDK20120127_174439_000000443111_00098_51836_5456.N1
DC map used
GOM_TRA_1PNPDK20120127_180449_000000473111_00099_51837_5456.N1
DC map used
GOM_TRA_1PNPDK20120127_192454_000000423111_00099_51837_5457.N1
DC map used
GOM_TRA_1PNPDE20120127_194503_000000473111_00100_51838_8133.N1
DC map used
GOM_TRA_1PNPDE20120127_210508_000000433111_00100_51838_8159.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:
84.0000 %
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:
15.289
NaN
NaN
St. deviation:
3.8290
NaN
NaN
Maximum:
20.809
NaN
NaN
Minimum:
9.7271
NaN
NaN
Number of data:
25.000
NaN
NaN

 

6.2 Plot for DARK 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:
0.24257
-0.20825
NaN
NaN
St. deviation:
0.90414
1.8323
NaN
NaN
Maximum:
30.100
9.5000
NaN
NaN
Minimum:
-10.700
-18.200
NaN
NaN
Number of data:
24400.
24400.
NaN
NaN
90Percentile:
1.6000
2.7000
NaN
NaN

 

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
27-JAN-2012 01:02:12
CALIBRATION_DATABASE
GOM_CAL_AXVIEC20120113_084220_20120102_000000_20500101_000000
1
27-JAN-2012 01:02:12
LEVEL-1B_PROC_CONFIG
GOM_PR1_AXVIEC20110513_081743_20020301_000000_20500101_000000
1
27-JAN-2012 01:02:12
STAR_CATALOGUE
GOM_CAT_AXVIEC20020121_161009_20020101_000000_20200101_000000
1
27-JAN-2012 01:02:12
STELLAR_SPECTRA_DATABANK
GOM_STS_AXVIEC20091111_151504_20020101_160000_20500101_000000
1
27-JAN-2012 01:02:12
ECMWF_FILE
AUX_ECF_AXNECM20120126_062116_20120126_210000_20120127_090000
1
27-JAN-2012 01:02:12
ECMWF_FILE
AUX_ECF_AXNECM20120126_182115_20120127_030000_20120127_150000
5
27-JAN-2012 04:22:42
ECMWF_FILE
AUX_ECA_AXNECM20120127_062115_20120126_210000_20120127_090000
7
27-JAN-2012 06:02:56
ECMWF_FILE
AUX_ECA_AXNECM20120127_180914_20120127_030000_20120127_150000
9
27-JAN-2012 07:43:11
ECMWF_FILE
AUX_ECA_AXNECM20120127_180915_20120127_090000_20120127_210000
15
27-JAN-2012 12:43:55
ECMWF_FILE
AUX_ECF_AXNECM20120127_062116_20120127_210000_20120128_090000
25
27-JAN-2012 21:05:08
OPTIONAL_ECMWF_FILE
MISSING
1
27-JAN-2012 01:02:12
OPTIONAL_ECMWF_FILE
AUX_ECA_AXNECM20120127_180915_20120127_090000_20120127_210000
11
27-JAN-2012 09:23:26
ORBIT_DATA_FILE
AUX_FPO_AXVPDS20120126_112113_20120125_190045_20120204_211424
1
27-JAN-2012 01:02:12
ORBIT_DATA_FILE
AUX_FPO_AXVPDS20120127_232914_20120126_182400_20120205_203739
9
27-JAN-2012 07:43:11