GOMOS Daily Reports

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	25FEB2007 05:32:58
Data source version	GOMOS/5.00
Start time of products	QDS_YESTERDAY(/START)-1D (23FEB2007 00:00:00)
Stop time of products	QDS_YESTERDAY(/STOP)-1D (24FEB2007 00:00:00)
Store outputs in DB	Yes
Nb of level 1b prods	50
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
23-FEB-2007 12:19:14	30AlpHya	48	26058
23-FEB-2007 12:30:12	78BetGem	17	26058
23-FEB-2007 12:47:20	1AlpUMi	49	26058
23-FEB-2007 12:54:38	5AlpCep	89	26058
23-FEB-2007 12:59:44	50AlpCyg	19	26058
23-FEB-2007 13:01:19	37GamCyg	66	26058
23-FEB-2007 13:09:40	17ZetAql	168	26058
23-FEB-2007 13:19:19	41PiSgr	155	26058
23-FEB-2007 13:21:03	34SigSgr	57	26058
23-FEB-2007 13:24:01	20EpsSgr	38	26058
23-FEB-2007 13:26:33	35LamSco	25	26058
23-FEB-2007 13:29:19	AlpAra	147	26058
23-FEB-2007 13:30:39	BetAra	141	26058
23-FEB-2007 13:32:34	DSA1025	0	26059
23-FEB-2007 13:34:01	AlpTrA	43	26059
23-FEB-2007 13:37:06	Alp1Cen	4	26059
23-FEB-2007 13:38:26	BetCen	10	26059
23-FEB-2007 13:41:14	Alp1Cru	12	26059
23-FEB-2007 13:43:17	TheCar	124	26059
23-FEB-2007 13:46:53	KapVel	91	26059
23-FEB-2007 13:50:12	LamVel	65	26059
23-FEB-2007 21:49:36	35LamSco	25	26063
23-FEB-2007 23:34:18	BetAra	141	26064

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_1PNPDE20070223_000145_000000432055_00445_26050_8623.N1	23-FEB-2007 00:01:45	Dark	43.000	25	35Lam Sco	1.6200	28000.	86	26050	No
2	GOM_TRA_1PNPDE20070223_000432_000000392055_00445_26050_8624.N1	23-FEB-2007 00:04:32	Dark	39.000	147	Alp Ara	2.8770	26000.	78	26050	No
3	GOM_TRA_1PNPDE20070223_000916_000000502055_00446_26051_8625.N1	23-FEB-2007 00:09:16	Dark	50.000	43	Alp TrA	1.9100	4250.0	100	26051	No
4	GOM_TRA_1PNPDE20070223_001219_000000452055_00446_26051_8626.N1	23-FEB-2007 00:12:19	Dark	44.500	4	Alp1Cen	-0.010000	5800.0	89	26051	No
5	GOM_TRA_1PNPDE20070223_001339_000000472055_00446_26051_8627.N1	23-FEB-2007 00:13:39	Dark	46.500	10	Bet Cen	0.61000	28000.	93	26051	No
6	GOM_TRA_1PNPDE20070223_001629_000000482055_00446_26051_8628.N1	23-FEB-2007 00:16:29	Dark	48.000	12	Alp1Cru	0.77500	30000.	96	26051	No
7	GOM_TRA_1PNPDE20070223_001833_000000372055_00446_26051_8629.N1	23-FEB-2007 00:18:33	Dark	37.000	124	The Car	2.7640	30000.	74	26051	No
8	GOM_TRA_1PNPDE20070223_002210_000000382055_00446_26051_8630.N1	23-FEB-2007 00:22:10	Straylight	37.500	91	Kap Vel	2.4900	26000.	75	26051	No
9	GOM_TRA_1PNPDE20070223_002528_000000402055_00446_26051_8631.N1	23-FEB-2007 00:25:28	Straylight	39.500	65	Lam Vel	2.2040	4400.0	79	26051	No
10	GOM_TRA_1PNPDE20070223_003507_000000452055_00446_26051_8632.N1	23-FEB-2007 00:35:07	Twi_and_stray	44.500	48	30Alp Hya	1.9770	4100.0	89	26051	No
11	GOM_TRA_1PNPDE20070223_004604_000000382055_00446_26051_8633.N1	23-FEB-2007 00:46:04	Bright	38.000	17	78Bet Gem	1.1610	4500.0	76	26051	No
12	GOM_TRA_1PNPDE20070223_010314_000000352055_00446_26051_8634.N1	23-FEB-2007 01:03:14	Bright	34.500	49	1Alp UMi	1.9900	6300.0	69	26051	No
13	GOM_TRA_1PNPDE20070223_011031_000000342055_00446_26051_8635.N1	23-FEB-2007 01:10:31	Bright	33.500	89	5Alp Cep	2.4510	8000.0	67	26051	No
14	GOM_TRA_1PNPDE20070223_011537_000000352055_00446_26051_8636.N1	23-FEB-2007 01:15:37	Bright	34.500	19	50Alp Cyg	1.2460	10500.	69	26051	No
15	GOM_TRA_1PNPDE20070223_011711_000000342055_00446_26051_8637.N1	23-FEB-2007 01:17:11	Bright	34.000	66	37Gam Cyg	2.2080	5900.0	68	26051	No
16	GOM_TRA_1PNPDE20070223_012532_000000362055_00446_26051_8638.N1	23-FEB-2007 01:25:32	Bright	36.000	168	17Zet Aql	2.9860	11000.	72	26051	No
17	GOM_TRA_1PNPDE20070223_013510_000000412055_00446_26051_9198.N1	23-FEB-2007 01:35:10	Twilight	40.500	155	41Pi Sgr	2.9000	6600.0	81	26051	No
18	GOM_TRA_1PNPDE20070223_013654_000000422055_00446_26051_9199.N1	23-FEB-2007 01:36:54	Dark	41.500	57	34Sig Sgr	2.0660	26000.	83	26051	No
19	GOM_TRA_1PNPDE20070223_013951_000000412055_00446_26051_9200.N1	23-FEB-2007 01:39:51	Dark	41.000	38	20Eps Sgr	1.8360	11000.	82	26051	No
20	GOM_TRA_1PNPDE20070223_014222_000000422055_00446_26051_9201.N1	23-FEB-2007 01:42:22	Dark	42.000	25	35Lam Sco	1.6200	28000.	84	26051	No
21	GOM_TRA_1PNPDE20070223_014509_000000392055_00446_26051_9202.N1	23-FEB-2007 01:45:09	Dark	38.500	147	Alp Ara	2.8770	26000.	77	26051	No
22	GOM_TRA_1PNPDE20070223_015255_000000462055_00447_26052_8770.N1	23-FEB-2007 01:52:55	Dark	45.500	4	Alp1Cen	-0.010000	5800.0	91	26052	Yes
23	GOM_TRA_1PNPDE20070223_015415_000000492055_00447_26052_8771.N1	23-FEB-2007 01:54:15	Dark	48.500	10	Bet Cen	0.61000	28000.	97	26052	No
24	GOM_TRA_1PNPDE20070223_015705_000000482055_00447_26052_8772.N1	23-FEB-2007 01:57:05	Dark	48.000	12	Alp1Cru	0.77500	30000.	96	26052	No
25	GOM_TRA_1PNPDE20070223_015909_000000362055_00447_26052_8773.N1	23-FEB-2007 01:59:09	Dark	35.500	124	The Car	2.7640	30000.	71	26052	No
26	GOM_TRA_1PNPDE20070223_020246_000000372055_00447_26052_8774.N1	23-FEB-2007 02:02:46	Straylight	37.000	91	Kap Vel	2.4900	26000.	74	26052	No
27	GOM_TRA_1PNPDE20070223_020604_000000432055_00447_26052_8775.N1	23-FEB-2007 02:06:04	Straylight	43.000	65	Lam Vel	2.2040	4400.0	86	26052	No
28	GOM_TRA_1PNPDE20070223_021543_000000452055_00447_26052_8776.N1	23-FEB-2007 02:15:43	Twi_and_stray	45.000	48	30Alp Hya	1.9770	4100.0	90	26052	No
29	GOM_TRA_1PNPDE20070223_022641_000000402055_00447_26052_8777.N1	23-FEB-2007 02:26:41	Bright	39.500	17	78Bet Gem	1.1610	4500.0	79	26052	No
30	GOM_TRA_1PNPDE20070223_024350_000000362055_00447_26052_8778.N1	23-FEB-2007 02:43:50	Bright	35.500	49	1Alp UMi	1.9900	6300.0	71	26052	No
31	GOM_TRA_1PNPDE20070223_025107_000000442055_00447_26052_8938.N1	23-FEB-2007 02:51:07	Bright	43.500	89	5Alp Cep	2.4510	8000.0	87	26052	No
32	GOM_TRA_1PNPDE20070223_025613_000000362055_00447_26052_8939.N1	23-FEB-2007 02:56:13	Bright	36.000	19	50Alp Cyg	1.2460	10500.	72	26052	No
33	GOM_TRA_1PNPDE20070223_025747_000000332055_00447_26052_8940.N1	23-FEB-2007 02:57:47	Bright	33.000	66	37Gam Cyg	2.2080	5900.0	66	26052	No
34	GOM_TRA_1PNPDE20070223_030608_000000372055_00447_26052_8941.N1	23-FEB-2007 03:06:08	Bright	37.000	168	17Zet Aql	2.9860	11000.	74	26052	No
35	GOM_TRA_1PNPDE20070223_031547_000000402055_00447_26052_8942.N1	23-FEB-2007 03:15:47	Twilight	40.000	155	41Pi Sgr	2.9000	6600.0	80	26052	No
36	GOM_TRA_1PNPDE20070223_031731_000000402055_00447_26052_8943.N1	23-FEB-2007 03:17:31	Dark	40.000	57	34Sig Sgr	2.0660	26000.	80	26052	No
37	GOM_TRA_1PNPDE20070223_032028_000000432055_00447_26052_8944.N1	23-FEB-2007 03:20:28	Dark	42.500	38	20Eps Sgr	1.8360	11000.	85	26052	No
38	GOM_TRA_1PNPDE20070223_032258_000000422055_00447_26052_8945.N1	23-FEB-2007 03:22:58	Dark	41.500	25	35Lam Sco	1.6200	28000.	83	26052	No
39	GOM_TRA_1PNPDE20070223_032545_000000392055_00447_26052_8946.N1	23-FEB-2007 03:25:45	Dark	39.000	147	Alp Ara	2.8770	26000.	78	26052	No
40	GOM_TRA_1PNPDE20070223_032706_000000392055_00447_26052_8947.N1	23-FEB-2007 03:27:06	Dark	38.500	141	Bet Ara	2.8400	4600.0	77	26052	No
41	GOM_TRA_1PNPDE20070223_033028_000000442055_00448_26053_8948.N1	23-FEB-2007 03:30:28	Dark	44.000	43	Alp TrA	1.9100	4250.0	88	26053	No
42	GOM_TRA_1PNPDE20070223_033332_000000412055_00448_26053_8949.N1	23-FEB-2007 03:33:32	Dark	40.500	4	Alp1Cen	-0.010000	5800.0	81	26053	No
43	GOM_TRA_1PNPDE20070223_033452_000000532055_00448_26053_8950.N1	23-FEB-2007 03:34:52	Dark	52.500	10	Bet Cen	0.61000	28000.	105	26053	No
44	GOM_TRA_1PNPDE20070223_033741_000000512055_00448_26053_8951.N1	23-FEB-2007 03:37:41	Dark	50.500	12	Alp1Cru	0.77500	30000.	101	26053	No
45	GOM_TRA_1PNPDE20070223_033946_000000372055_00448_26053_8952.N1	23-FEB-2007 03:39:46	Dark	36.500	124	The Car	2.7640	30000.	73	26053	No
46	GOM_TRA_1PNPDE20070223_034322_000000372055_00448_26053_8953.N1	23-FEB-2007 03:43:22	Straylight	36.500	91	Kap Vel	2.4900	26000.	73	26053	No
47	GOM_TRA_1PNPDE20070223_034640_000000422055_00448_26053_8954.N1	23-FEB-2007 03:46:40	Straylight	41.500	65	Lam Vel	2.2040	4400.0	83	26053	No
48	GOM_TRA_1PNPDE20070223_035619_000000462055_00448_26053_8955.N1	23-FEB-2007 03:56:19	Twi_and_stray	46.000	48	30Alp Hya	1.9770	4100.0	92	26053	No
49	GOM_TRA_1PNPDE20070223_040717_000000392055_00448_26053_8956.N1	23-FEB-2007 04:07:17	Bright	38.500	17	78Bet Gem	1.1610	4500.0	77	26053	No
50	GOM_TRA_1PNPDE20070223_042426_000000352055_00448_26053_8957.N1	23-FEB-2007 04:24:26	Bright	35.000	49	1Alp UMi	1.9900	6300.0	70	26053	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_1PNPDE20070223_015255_000000462055_00447_26052_8770.N1	DC map with no T dep.
GOM_TRA_1PNPDE20070223_015415_000000492055_00447_26052_8771.N1	DC map used
GOM_TRA_1PNPDE20070223_015705_000000482055_00447_26052_8772.N1	DC map used
GOM_TRA_1PNPDE20070223_015909_000000362055_00447_26052_8773.N1	DC map used
GOM_TRA_1PNPDE20070223_020246_000000372055_00447_26052_8774.N1	DC map used
GOM_TRA_1PNPDE20070223_020604_000000432055_00447_26052_8775.N1	DC map used
GOM_TRA_1PNPDE20070223_021543_000000452055_00447_26052_8776.N1	DC map used
GOM_TRA_1PNPDE20070223_022641_000000402055_00447_26052_8777.N1	DC map used
GOM_TRA_1PNPDE20070223_024350_000000362055_00447_26052_8778.N1	DC map used

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

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:	32.6531 %
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)

5.3 Plot quality information per product (world map)

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:	14.960	20.612	14.210
St. deviation:	5.3513	4.7863	0.32455
Maximum:	22.945	26.906	14.439
Minimum:	5.2009	10.376	13.980
Number of data:	24.000	14.000	2.0000

6.2 Plot for DARK limb products

6.3 Plot for BRIGHT limb products

6.3 Plot for TWILIGHT limb products

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

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:	0.10413	-1.1816	-0.063154	-1.5352
St. deviation:	0.51774	2.1065	0.65546	2.1220
Maximum:	7.1000	4.9000	5.3000	4.7000
Minimum:	-3.7000	-10.000	-6.0000	-9.9000
Number of data:	22350.	22350.	11800.	11800.

7.2.2 Trend of daily SATU NEA St. deviation since 1st April 2006 (dark limb)

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

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_AXNIEC20050627_150713_20030716_120000_20100101_000000	1	23-FEB-2007 00:01:45
CALIBRATION_DATABASE	GOM_CAL_AXVIEC20070221_092417_20070220_000000_20100101_000000	1	23-FEB-2007 00:01:45
LEVEL-1B_PROC_CONFIG	GOM_PR1_AXNIEC20050627_151042_20020301_000000_20100101_000000	1	23-FEB-2007 00:01:45
STAR_CATALOGUE	GOM_CAT_AXVIEC20020121_161009_20020101_000000_20200101_000000	1	23-FEB-2007 00:01:45
STELLAR_SPECTRA_DATABANK	GOM_STS_AXNIEC20040308_103538_20020101_160000_20100101_000000	1	23-FEB-2007 00:01:45
ECMWF_FILE	AUX_ECF_AXNECM20070222_061111_20070222_210000_20070223_090000	1	23-FEB-2007 00:01:45
OPTIONAL_ECMWF_FILE	MISSING	1	23-FEB-2007 00:01:45
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20070222_221204_000057382055_00444_26049_2840.N1	1	23-FEB-2007 00:01:45
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20070222_235301_000054192055_00445_26050_2841.N1	17	23-FEB-2007 01:35:10
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20070223_014955_000028692055_00447_26052_2842.N1	31	23-FEB-2007 02:51:07

Reports

Daily Report Level 2 Dataset IPF v6.01

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Data Anomaly Reports

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Last modified:
24-Apr-2008