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	21OCT2006 05:32:26
Data source version	GOMOS/5.00
Start time of products	QDS_YESTERDAY(/START)-1D (19OCT2006 00:00:00)
Stop time of products	QDS_YESTERDAY(/STOP)-1D (20OCT2006 00:00:00)
Store outputs in DB	Yes
Nb of level 1b prods	50
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 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_1PNPDE20061019_000003_000000372052_00131_24233_1635.N1	19-OCT-2006 00:00:03	Dark	36.500	29	Bet Car	1.6720	10200.	73	24233	No
2	GOM_TRA_1PNPDE20061019_001107_000000392052_00131_24233_1636.N1	19-OCT-2006 00:11:07	Dark	39.000	143	Alp Hyi	2.8570	7200.0	78	24233	No
3	GOM_TRA_1PNPDE20061019_001233_000000492052_00131_24233_1637.N1	19-OCT-2006 00:12:33	Dark	49.000	9	Alp Eri	0.45300	24000.	98	24233	No
4	GOM_TRA_1PNPDE20061019_002404_000000422052_00131_24233_1623.N1	19-OCT-2006 00:24:04	Straylight	41.500	52	16Bet Cet	2.0370	4500.0	83	24233	No
5	GOM_TRA_1PNPDE20061019_003338_000000352052_00131_24233_1624.N1	19-OCT-2006 00:33:38	Bright	35.000	140	88Gam Peg	2.8340	26000.	70	24233	No
6	GOM_TRA_1PNPDE20061019_003734_000000372052_00131_24233_1625.N1	19-OCT-2006 00:37:34	Bright	36.500	58	21Alp And	2.0730	11000.	73	24233	No
7	GOM_TRA_1PNPDE20061019_004603_000000372052_00131_24233_1626.N1	19-OCT-2006 00:46:03	Bright	37.000	74	11Bet Cas	2.2680	6600.0	74	24233	No
8	GOM_TRA_1PNPDE20061019_005436_000000352052_00131_24233_1627.N1	19-OCT-2006 00:54:36	Bright	35.000	49	1Alp UMi	1.9900	6300.0	70	24233	No
9	GOM_TRA_1PNPDE20061019_005746_000000522052_00131_24233_1628.N1	19-OCT-2006 00:57:46	Bright	52.000	60	7Bet UMi	2.0810	3950.0	104	24233	No
10	GOM_TRA_1PNPDE20061019_010251_000000382052_00131_24233_1629.N1	19-OCT-2006 01:02:51	Bright	38.000	36	50Alp UMa	1.8000	6300.0	76	24233	No
11	GOM_TRA_1PNPDE20061019_010425_000000362052_00131_24233_1630.N1	19-OCT-2006 01:04:25	Bright	35.500	82	48Bet UMa	2.3650	10600.	71	24233	No
12	GOM_TRA_1PNPDE20061019_010751_000000362052_00131_24233_1631.N1	19-OCT-2006 01:07:51	Bright	35.500	174	52Psi UMa	3.0040	4400.0	71	24233	No
13	GOM_TRA_1PNPDE20061019_011441_000000342052_00131_24233_1632.N1	19-OCT-2006 01:14:41	Bright	34.000	96	68Del Leo	2.5600	9300.0	68	24233	No
14	GOM_TRA_1PNPDE20061019_013413_000000422052_00131_24233_1633.N1	19-OCT-2006 01:34:13	Dark	42.000	113	Mu Vel	2.6920	5000.0	84	24233	No
15	GOM_TRA_1PNPDE20061019_013827_000000402052_00132_24234_1634.N1	19-OCT-2006 01:38:27	Dark	40.000	46	Del Vel	1.9540	10600.	80	24234	No
16	GOM_TRA_1PNPDE20061019_014039_000000382052_00132_24234_1635.N1	19-OCT-2006 01:40:39	Dark	37.500	29	Bet Car	1.6720	10200.	75	24234	No
17	GOM_TRA_1PNPDE20061019_015143_000000382052_00132_24234_1636.N1	19-OCT-2006 01:51:43	Dark	37.500	143	Alp Hyi	2.8570	7200.0	75	24234	No
18	GOM_TRA_1PNPDE20061019_020440_000000442052_00132_24234_1624.N1	19-OCT-2006 02:04:40	Straylight	44.000	52	16Bet Cet	2.0370	4500.0	88	24234	No
19	GOM_TRA_1PNPDE20061019_021414_000000362052_00132_24234_1625.N1	19-OCT-2006 02:14:14	Bright	36.000	140	88Gam Peg	2.8340	26000.	72	24234	No
20	GOM_TRA_1PNPDE20061019_021810_000000362052_00132_24234_1626.N1	19-OCT-2006 02:18:10	Bright	36.000	58	21Alp And	2.0730	11000.	72	24234	No
21	GOM_TRA_1PNPDE20061019_022639_000000342052_00132_24234_1627.N1	19-OCT-2006 02:26:39	Bright	34.000	74	11Bet Cas	2.2680	6600.0	68	24234	No
22	GOM_TRA_1PNPDE20061019_023512_000000332052_00132_24234_1628.N1	19-OCT-2006 02:35:12	Bright	32.500	49	1Alp UMi	1.9900	6300.0	65	24234	No
23	GOM_TRA_1PNPDE20061019_023823_000000372052_00132_24234_1629.N1	19-OCT-2006 02:38:23	Bright	36.500	60	7Bet UMi	2.0810	3950.0	73	24234	No
24	GOM_TRA_1PNPDE20061019_024327_000000382052_00132_24234_1630.N1	19-OCT-2006 02:43:27	Bright	37.500	36	50Alp UMa	1.8000	6300.0	75	24234	No
25	GOM_TRA_1PNPDE20061019_024501_000000362052_00132_24234_1631.N1	19-OCT-2006 02:45:01	Bright	36.000	82	48Bet UMa	2.3650	10600.	72	24234	No
26	GOM_TRA_1PNPDE20061019_024827_000000342052_00132_24234_1632.N1	19-OCT-2006 02:48:27	Bright	33.500	174	52Psi UMa	3.0040	4400.0	67	24234	No
27	GOM_TRA_1PNPDE20061019_025517_000000342052_00132_24234_1633.N1	19-OCT-2006 02:55:17	Bright	33.500	96	68Del Leo	2.5600	9300.0	67	24234	No
28	GOM_TRA_1PNPDE20061019_031449_000000412052_00132_24234_1634.N1	19-OCT-2006 03:14:49	Dark	40.500	113	Mu Vel	2.6920	5000.0	81	24234	No
29	GOM_TRA_1PNPDE20061019_034516_000000452052_00133_24235_1625.N1	19-OCT-2006 03:45:16	Straylight	44.500	52	16Bet Cet	2.0370	4500.0	89	24235	No
30	GOM_TRA_1PNPDE20061019_035450_000000352052_00133_24235_1626.N1	19-OCT-2006 03:54:50	Bright	35.000	140	88Gam Peg	2.8340	26000.	70	24235	No
31	GOM_TRA_1PNPDE20061019_035846_000000362052_00133_24235_1627.N1	19-OCT-2006 03:58:46	Bright	36.000	58	21Alp And	2.0730	11000.	72	24235	No
32	GOM_TRA_1PNPDE20061019_040715_000000352052_00133_24235_1628.N1	19-OCT-2006 04:07:15	Bright	34.500	74	11Bet Cas	2.2680	6600.0	69	24235	No
33	GOM_TRA_1PNPDE20061019_041548_000000352052_00133_24235_1629.N1	19-OCT-2006 04:15:48	Bright	35.000	49	1Alp UMi	1.9900	6300.0	70	24235	No
34	GOM_TRA_1PNPDE20061019_041859_000000372052_00133_24235_1630.N1	19-OCT-2006 04:18:59	Bright	37.000	60	7Bet UMi	2.0810	3950.0	74	24235	No
35	GOM_TRA_1PNPDE20061019_042403_000000382052_00133_24235_1631.N1	19-OCT-2006 04:24:03	Bright	37.500	36	50Alp UMa	1.8000	6300.0	75	24235	No
36	GOM_TRA_1PNPDE20061019_042536_000000362052_00133_24235_1632.N1	19-OCT-2006 04:25:36	Bright	36.000	82	48Bet UMa	2.3650	10600.	72	24235	No
37	GOM_TRA_1PNPDE20061019_042903_000000362052_00133_24235_1633.N1	19-OCT-2006 04:29:03	Bright	36.000	174	52Psi UMa	3.0040	4400.0	72	24235	No
38	GOM_TRA_1PNPDE20061019_043554_000000342052_00133_24235_1634.N1	19-OCT-2006 04:35:54	Bright	33.500	96	68Del Leo	2.5600	9300.0	67	24235	No
39	GOM_TRA_1PNPDE20061019_045525_000000392052_00133_24235_1635.N1	19-OCT-2006 04:55:25	Dark	39.000	113	Mu Vel	2.6920	5000.0	78	24235	No
40	GOM_TRA_1PNPDE20061019_045940_000000412052_00134_24236_1636.N1	19-OCT-2006 04:59:40	Dark	40.500	46	Del Vel	1.9540	10600.	81	24236	No
41	GOM_TRA_1PNPDE20061019_050152_000000372052_00134_24236_1637.N1	19-OCT-2006 05:01:52	Dark	37.000	29	Bet Car	1.6720	10200.	74	24236	No
42	GOM_TRA_1PNPDE20061019_051255_000000372052_00134_24236_1638.N1	19-OCT-2006 05:12:55	Dark	37.000	143	Alp Hyi	2.8570	7200.0	74	24236	No
43	GOM_TRA_1PNPDE20061019_220520_000000422052_00144_24246_1633.N1	19-OCT-2006 22:05:20	Straylight	42.000	84	Alp Phe	2.3970	4500.0	84	24246	No
44	GOM_TRA_1PNPDE20061019_221153_000000392052_00144_24246_1634.N1	19-OCT-2006 22:11:53	Straylight	38.500	52	16Bet Cet	2.0370	4500.0	77	24246	No
45	GOM_TRA_1PNPDE20061019_222126_000000362052_00144_24246_1635.N1	19-OCT-2006 22:21:26	Bright	36.000	140	88Gam Peg	2.8340	26000.	72	24246	No
46	GOM_TRA_1PNPDE20061019_222522_000000352052_00144_24246_1636.N1	19-OCT-2006 22:25:22	Bright	35.000	58	21Alp And	2.0730	11000.	70	24246	No
47	GOM_TRA_1PNPDE20061019_223315_000000372052_00144_24246_1637.N1	19-OCT-2006 22:33:15	Bright	37.000	68	18Alp Cas	2.2250	4500.0	74	24246	No
48	GOM_TRA_1PNPDE20061019_224223_000000342052_00144_24246_1638.N1	19-OCT-2006 22:42:23	Bright	33.500	49	1Alp UMi	1.9900	6300.0	67	24246	No
49	GOM_TRA_1PNPDE20061019_224537_000000332052_00144_24246_1639.N1	19-OCT-2006 22:45:37	Bright	32.500	60	7Bet UMi	2.0810	3950.0	65	24246	No
50	GOM_TRA_1PNPDE20061019_225038_000000392052_00144_24246_1640.N1	19-OCT-2006 22:50:38	Bright	38.500	36	50Alp UMa	1.8000	6300.0	77	24246	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 All products used the DSA observation for the DC computation

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:	10.0000 %
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)

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:	16.386	21.395	NaN
St. deviation:	4.1443	4.3459	NaN
Maximum:	20.172	28.143	NaN
Minimum:	5.8340	3.4326	NaN
Number of data:	12.000	33.000	NaN

6.2 Plot for DARK limb products

6.3 Plot for BRIGHT 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:	0.067523	-1.1382	0.031091	-1.1550
St. deviation:	0.56199	1.6374	0.74948	1.9411
Maximum:	2.8000	7.1000	5.7000	8.8000
Minimum:	-2.5000	-6.6000	-0.80000	-7.4000
Number of data:	10400.	10400.	26700.	26700.

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.

qds_image

8. Auxiliary Data Files used for the production reported in section 2.2

The number reported in the third column indicates since which file (see list in section 2.2) 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	19-OCT-2006 00:00:03
CALIBRATION_DATABASE	GOM_CAL_AXVIEC20061011_074727_20061009_000000_20100101_000000	1	19-OCT-2006 00:00:03
LEVEL-1B_PROC_CONFIG	GOM_PR1_AXNIEC20050627_151042_20020301_000000_20100101_000000	1	19-OCT-2006 00:00:03
STAR_CATALOGUE	GOM_CAT_AXVIEC20020121_161009_20020101_000000_20200101_000000	1	19-OCT-2006 00:00:03
STELLAR_SPECTRA_DATABANK	GOM_STS_AXNIEC20040308_103538_20020101_160000_20100101_000000	1	19-OCT-2006 00:00:03
ECMWF_FILE	AUX_ECF_AXNECM20061018_062345_20061018_210000_20061019_090000	1	19-OCT-2006 00:00:03
ECMWF_FILE	AUX_ECF_AXNECM20061018_182358_20061019_030000_20061019_150000	29	19-OCT-2006 03:45:16
ECMWF_FILE	AUX_ECF_AXNECM20061019_063412_20061019_210000_20061020_090000	43	19-OCT-2006 22:05:20
OPTIONAL_ECMWF_FILE	MISSING	1	19-OCT-2006 00:00:03
ORBIT_DATA_FILE	AUX_FPO_AXVPDS20061019_000320_20061018_185543_20061028_202157	1	19-OCT-2006 00:00:03
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20061018_223029_000060572052_00130_24232_0782.N1	4	19-OCT-2006 00:24:04
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20061019_001645_000057382052_00131_24233_0783.N1	18	19-OCT-2006 02:04:40
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20061019_015742_000057382052_00132_24234_0784.N1	29	19-OCT-2006 03:45:16
ORBIT_DATA_FILE	AUX_FPO_AXVPDS20061019_232218_20061019_182406_20061029_213056	43	19-OCT-2006 22:05:20

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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Last modified:
24-Apr-2008