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GOMOS Daily Report 26-FEB-2012

GOMOS Daily Report 26-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
 28FEB2012 07:00:30
Data source version
 GOMOS/6.01
Start time of products
 26FEB2012 01:13:05
Stop time of products
 26FEB2012 22:56:14
Store outputs in DB
 Yes
Nb of level 1b prods
 16
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 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_1PNPDE20120226_011305_000000463112_00089_52258_2305.N1
 26-FEB-2012 01:13:05
 Dark
 45.500
 10
 Bet Cen
0.61000
 28000.
 91
 52258
 No
2
 GOM_TRA_1PNPDE20120226_011643_000000543112_00089_52258_2306.N1
 26-FEB-2012 01:16:43
 Dark
 53.500
 26
 Gam Cru
1.6240
 2900.0
 107
 52258
 No
3
 GOM_TRA_1PNPDE20120226_025320_000000453112_00090_52259_2342.N1
 26-FEB-2012 02:53:20
 Dark
 45.000
 10
 Bet Cen
0.61000
 28000.
 90
 52259
 No
4
 GOM_TRA_1PNPDE20120226_025659_000000563112_00090_52259_2343.N1
 26-FEB-2012 02:56:59
 Dark
 55.500
 26
 Gam Cru
1.6240
 2900.0
 111
 52259
 No
5
 GOM_TRA_1PNPDE20120226_043334_000000413112_00091_52260_2387.N1
 26-FEB-2012 04:33:34
 Dark
 40.500
 10
 Bet Cen
0.61000
 28000.
 81
 52260
 No
6
 GOM_TRA_1PNPDE20120226_061349_000000483112_00092_52261_2440.N1
 26-FEB-2012 06:13:49
 Dark
 47.500
 10
 Bet Cen
0.61000
 28000.
 95
 52261
 No
7
 GOM_TRA_1PNPDK20120226_075403_000000523112_00093_52262_6839.N1
 26-FEB-2012 07:54:03
 Dark
 51.500
 10
 Bet Cen
0.61000
 28000.
 103
 52262
 No
8
 GOM_TRA_1PNPDK20120226_093418_000000463112_00094_52263_6880.N1
 26-FEB-2012 09:34:18
 Dark
 45.500
 10
 Bet Cen
0.61000
 28000.
 91
 52263
 No
9
 GOM_TRA_1PNPDK20120226_111432_000000533112_00095_52264_6915.N1
 26-FEB-2012 11:14:32
 Dark
 53.000
 10
 Bet Cen
0.61000
 28000.
 106
 52264
 No
10
 GOM_TRA_1PNPDK20120226_125447_000000513112_00096_52265_6957.N1
 26-FEB-2012 12:54:47
 Dark
 50.500
 10
 Bet Cen
0.61000
 28000.
 101
 52265
 No
11
 GOM_TRA_1PNPDK20120226_143501_000000413112_00097_52266_6995.N1
 26-FEB-2012 14:35:01
 Dark
 41.000
 10
 Bet Cen
0.61000
 28000.
 82
 52266
 No
12
 GOM_TRA_1PNPDK20120226_161516_000000413112_00098_52267_7022.N1
 26-FEB-2012 16:15:16
 Dark
 41.000
 10
 Bet Cen
0.61000
 28000.
 82
 52267
 No
13
 GOM_TRA_1PNPDK20120226_175531_000000423112_00099_52268_7055.N1
 26-FEB-2012 17:55:31
 Dark
 42.000
 10
 Bet Cen
0.61000
 28000.
 84
 52268
 No
14
 GOM_TRA_1PNPDK20120226_193545_000000473112_00100_52269_7086.N1
 26-FEB-2012 19:35:45
 Dark
 47.000
 10
 Bet Cen
0.61000
 28000.
 94
 52269
 No
15
 GOM_TRA_1PNPDE20120226_211600_000000513112_00101_52270_2636.N1
 26-FEB-2012 21:16:00
 Dark
 50.500
 10
 Bet Cen
0.61000
 28000.
 101
 52270
 No
16
 GOM_TRA_1PNPDE20120226_225614_000000423112_00102_52271_2658.N1
 26-FEB-2012 22:56:14
 Dark
 42.000
 10
 Bet Cen
0.61000
 28000.
 84
 52271
 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_1PNPDE20120226_011305_000000463112_00089_52258_2305.N1
 DC map used
GOM_TRA_1PNPDE20120226_011643_000000543112_00089_52258_2306.N1
 DC map used
GOM_TRA_1PNPDE20120226_025320_000000453112_00090_52259_2342.N1
 DC map used
GOM_TRA_1PNPDE20120226_025659_000000563112_00090_52259_2343.N1
 DC map used
GOM_TRA_1PNPDE20120226_043334_000000413112_00091_52260_2387.N1
 DC map used
GOM_TRA_1PNPDE20120226_061349_000000483112_00092_52261_2440.N1
 DC map used
GOM_TRA_1PNPDK20120226_075403_000000523112_00093_52262_6839.N1
 DC map used
GOM_TRA_1PNPDK20120226_093418_000000463112_00094_52263_6880.N1
 DC map used
GOM_TRA_1PNPDK20120226_111432_000000533112_00095_52264_6915.N1
 DC map used
GOM_TRA_1PNPDK20120226_125447_000000513112_00096_52265_6957.N1
 DC map used
GOM_TRA_1PNPDK20120226_143501_000000413112_00097_52266_6995.N1
 DC map used
GOM_TRA_1PNPDK20120226_161516_000000413112_00098_52267_7022.N1
 DC map used
GOM_TRA_1PNPDK20120226_175531_000000423112_00099_52268_7055.N1
 DC map used
GOM_TRA_1PNPDK20120226_193545_000000473112_00100_52269_7086.N1
 DC map used
GOM_TRA_1PNPDE20120226_211600_000000513112_00101_52270_2636.N1
 DC map used
GOM_TRA_1PNPDE20120226_225614_000000423112_00102_52271_2658.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:
87.5000 %
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:
12.462
 NaN
 NaN
St. deviation:
5.4614
 NaN
 NaN
Maximum:
19.898
 NaN
 NaN
Minimum:
3.6023
 NaN
 NaN
Number of data:
16.000
 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:
0.12668
 -0.19473
 NaN
 NaN
St. deviation:
0.22184
 0.41442
 NaN
 NaN
Maximum:
1.1000
 2.0000
 NaN
 NaN
Minimum:
-1.0000
 -2.3000
 NaN
 NaN
Number of data:
15200.
 15200.
 NaN
 NaN
90Percentile:
0.40000
 0.30000
 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
 26-FEB-2012 01:13:05
CALIBRATION_DATABASE
GOM_CAL_AXVIEC20120130_103112_20120125_000000_20500101_000000
1
 26-FEB-2012 01:13:05
LEVEL-1B_PROC_CONFIG
GOM_PR1_AXVIEC20110513_081743_20020301_000000_20500101_000000
1
 26-FEB-2012 01:13:05
STAR_CATALOGUE
GOM_CAT_AXVIEC20020121_161009_20020101_000000_20200101_000000
1
 26-FEB-2012 01:13:05
STELLAR_SPECTRA_DATABANK
GOM_STS_AXVIEC20091111_151504_20020101_160000_20500101_000000
1
 26-FEB-2012 01:13:05
ECMWF_FILE
AUX_ECF_AXNECM20120225_062114_20120225_210000_20120226_090000
1
 26-FEB-2012 01:13:05
ECMWF_FILE
AUX_ECF_AXNECM20120225_181052_20120226_030000_20120226_150000
5
 26-FEB-2012 04:33:34
ECMWF_FILE
AUX_ECA_AXNECM20120226_062115_20120225_210000_20120226_090000
6
 26-FEB-2012 06:13:49
ECMWF_FILE
AUX_ECF_AXNECM20120226_062116_20120226_090000_20120226_210000
8
 26-FEB-2012 09:34:18
ECMWF_FILE
AUX_ECF_AXNECM20120226_062116_20120226_150000_20120227_030000
12
 26-FEB-2012 16:15:16
ECMWF_FILE
AUX_ECA_AXNECM20120226_182115_20120226_090000_20120226_210000
14
 26-FEB-2012 19:35:45
ECMWF_FILE
AUX_ECF_AXNECM20120226_062116_20120226_210000_20120227_090000
15
 26-FEB-2012 21:16:00
OPTIONAL_ECMWF_FILE
MISSING
1
 26-FEB-2012 01:13:05
ORBIT_DATA_FILE
AUX_FPO_AXVPDS20120224_112114_20120223_193730_20120304_201058
1
 26-FEB-2012 01:13:05

Reports
Daily Report Level 2 Dataset IPF v6.01
Daily Reports of NRT data
Data Anomaly Reports
Instrument Anomaly Reports
Monthly Reports
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