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	07SEP2006 09:32:45
Data source version	GOMOS/5.00
Start time of products	QDS_YESTERDAY(/START)-1D (05SEP2006 00:00:00)
Stop time of products	QDS_YESTERDAY(/STOP)-1D (06SEP2006 00:00:00)
Store outputs in DB	Yes
Nb of level 1b prods	32
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_1PNPDE20060905_000118_000000392051_00002_23603_1206.N1	05-SEP-2006 00:01:18	Straylight	39.000	172	Gam Gru	3.0030	13100.	78	23603	No
2	GOM_TRA_1PNPDE20060905_000236_000000472051_00002_23603_1207.N1	05-SEP-2006 00:02:36	Straylight	47.000	18	24Alp PsA	1.1660	9700.0	94	23603	No
3	GOM_TRA_1PNPDE20060905_000719_000000392051_00002_23603_1208.N1	05-SEP-2006 00:07:19	Bright	39.000	142	49Del Cap	2.8500	8900.0	78	23603	No
4	GOM_TRA_1PNPDE20060905_001025_000000372051_00002_23603_1209.N1	05-SEP-2006 00:10:25	Bright	36.500	154	22Bet Aqr	2.8990	5700.0	73	23603	No
5	GOM_TRA_1PNPDE20060905_001148_000000382051_00002_23603_1210.N1	05-SEP-2006 00:11:48	Bright	37.500	162	34Alp Aqr	2.9440	5350.0	75	23603	No
6	GOM_TRA_1PNPDE20060905_001447_000000382051_00002_23603_1211.N1	05-SEP-2006 00:14:47	Bright	37.500	61	8Eps Peg	2.1000	3900.0	75	23603	No
7	GOM_TRA_1PNPDE20060905_002145_000000342051_00002_23603_1212.N1	05-SEP-2006 00:21:45	Bright	33.500	92	53Eps Cyg	2.5000	4500.0	67	23603	No
8	GOM_TRA_1PNPDE20060905_002341_000000332051_00002_23603_1213.N1	05-SEP-2006 00:23:41	Bright	33.000	66	37Gam Cyg	2.2080	5900.0	66	23603	No
9	GOM_TRA_1PNPDE20060905_002454_000000342051_00002_23603_1214.N1	05-SEP-2006 00:24:54	Bright	34.000	19	50Alp Cyg	1.2460	10500.	68	23603	No
10	GOM_TRA_1PNPDE20060905_002944_000000362051_00002_23603_1215.N1	05-SEP-2006 00:29:44	Bright	36.000	89	5Alp Cep	2.4510	8000.0	72	23603	No
11	GOM_TRA_1PNPDE20060905_003726_000000362051_00002_23603_1216.N1	05-SEP-2006 00:37:26	Bright	35.500	49	1Alp UMi	1.9900	6300.0	71	23603	No
12	GOM_TRA_1PNPDE20060905_005432_000000332051_00002_23603_1217.N1	05-SEP-2006 00:54:32	Bright	33.000	24	66Alp Gem	1.5800	10200.	66	23603	No
13	GOM_TRA_1PNPDE20060905_005536_000000402051_00002_23603_1218.N1	05-SEP-2006 00:55:36	Bright	40.000	17	78Bet Gem	1.1610	4500.0	80	23603	No
14	GOM_TRA_1PNPDE20060905_010226_000000532051_00002_23603_1219.N1	05-SEP-2006 01:02:26	Twilight	53.000	8	10Alp CMi	0.40000	6500.0	106	23603	No
15	GOM_TRA_1PNPDE20060905_011000_000000392051_00002_23603_1225.N1	05-SEP-2006 01:10:00	Dark	39.000	132	15Rho Pup	2.8030	6900.0	78	23603	No
16	GOM_TRA_1PNPDE20060905_011302_000000422051_00002_23603_1202.N1	05-SEP-2006 01:13:02	Dark	42.000	23	21Eps CMa	1.5020	26000.	84	23603	No
17	GOM_TRA_1PNPDE20060905_011430_000000402051_00002_23603_1203.N1	05-SEP-2006 01:14:30	Dark	40.000	117	Pi Pup	2.7060	3800.0	80	23603	No
18	GOM_TRA_1PNPDE20060905_011831_000000402051_00002_23603_1200.N1	05-SEP-2006 01:18:31	Dark	40.000	161	Tau Pup	2.9310	4500.0	80	23603	No
19	GOM_TRA_1PNPDE20060905_011943_000000482051_00002_23603_1205.N1	05-SEP-2006 01:19:43	Dark	47.500	2	Alp Car	-0.73600	7000.0	95	23603	No
20	GOM_TRA_1PNPDE20060905_013006_000000412051_00003_23604_1206.N1	05-SEP-2006 01:30:06	Dark	40.500	143	Alp Hyi	2.8570	7200.0	81	23604	No
21	GOM_TRA_1PNPDE20060905_013125_000000442051_00003_23604_1207.N1	05-SEP-2006 01:31:25	Dark	44.000	9	Alp Eri	0.45300	24000.	88	23604	No
22	GOM_TRA_1PNPDE20060905_013525_000000382051_00003_23604_1204.N1	05-SEP-2006 01:35:25	Straylight	37.500	148	Alp Tuc	2.8780	4100.0	75	23604	No
23	GOM_TRA_1PNPDE20060905_013906_000000422051_00003_23604_1209.N1	05-SEP-2006 01:39:06	Straylight	41.500	31	Alp Gru	1.7340	15200.	83	23604	No
24	GOM_TRA_1PNPDE20060905_014154_000000372051_00003_23604_1210.N1	05-SEP-2006 01:41:54	Straylight	37.000	172	Gam Gru	3.0030	13100.	74	23604	No
25	GOM_TRA_1PNPDE20060905_014312_000000462051_00003_23604_1211.N1	05-SEP-2006 01:43:12	Straylight	46.000	18	24Alp PsA	1.1660	9700.0	92	23604	No
26	GOM_TRA_1PNPDE20060905_014755_000000412051_00003_23604_1208.N1	05-SEP-2006 01:47:55	Bright	40.500	142	49Del Cap	2.8500	8900.0	81	23604	No
27	GOM_TRA_1PNPDE20060905_015101_000000382051_00003_23604_1213.N1	05-SEP-2006 01:51:01	Bright	37.500	154	22Bet Aqr	2.8990	5700.0	75	23604	No
28	GOM_TRA_1PNPDE20060905_015224_000000382051_00003_23604_1214.N1	05-SEP-2006 01:52:24	Bright	37.500	162	34Alp Aqr	2.9440	5350.0	75	23604	No
29	GOM_TRA_1PNPDE20060905_015523_000000382051_00003_23604_1215.N1	05-SEP-2006 01:55:23	Bright	37.500	61	8Eps Peg	2.1000	3900.0	75	23604	No
30	GOM_TRA_1PNPDE20060905_020221_000000372051_00003_23604_1212.N1	05-SEP-2006 02:02:21	Bright	37.000	92	53Eps Cyg	2.5000	4500.0	74	23604	No
31	GOM_TRA_1PNPDE20060905_020417_000000372051_00003_23604_1217.N1	05-SEP-2006 02:04:17	Bright	36.500	66	37Gam Cyg	2.2080	5900.0	73	23604	No
32	GOM_TRA_1PNPDE20060905_020530_000000382051_00003_23604_1214.N1	05-SEP-2006 02:05:30	Bright	37.500	19	50Alp Cyg	1.2460	10500.	75	23604	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:	18.7500 %
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:	15.366	20.525	6.2890
St. deviation:	3.0768	4.5312	0.0000
Maximum:	18.703	33.627	6.2890
Minimum:	8.7968	14.064	6.2890
Number of data:	7.0000	18.000	1.0000

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:	0.12248	-0.96333	0.088872	-1.0254
St. deviation:	0.59785	2.3791	0.60507	2.4295
Maximum:	34.600	33.500	3.4000	6.8000
Minimum:	-0.20000	-5.3000	-1.2000	-6.7000
Number of data:	6450.0	6450.0	15000.	15000.

7.2.2 Trend of daily SATU NEA St. deviation during the last two months (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	05-SEP-2006 00:01:18
CALIBRATION_DATABASE	GOM_CAL_AXVIEC20060825_091604_20060823_000000_20100101_000000	1	05-SEP-2006 00:01:18
CALIBRATION_DATABASE	GOM_CAL_AXVIEC20060904_154109_20060902_000000_20100101_000000	15	05-SEP-2006 01:10:00
LEVEL-1B_PROC_CONFIG	GOM_PR1_AXNIEC20050627_151042_20020301_000000_20100101_000000	1	05-SEP-2006 00:01:18
STAR_CATALOGUE	GOM_CAT_AXVIEC20020121_161009_20020101_000000_20200101_000000	1	05-SEP-2006 00:01:18
STELLAR_SPECTRA_DATABANK	GOM_STS_AXNIEC20040308_103538_20020101_160000_20100101_000000	1	05-SEP-2006 00:01:18
ECMWF_FILE	AUX_ECF_AXNECM20060904_061900_20060904_210000_20060905_090000	1	05-SEP-2006 00:01:18
ECMWF_FILE	AUX_ECA_AXNECM20060905_060822_20060904_210000_20060905_090000	15	05-SEP-2006 01:10:00
ECMWF_FILE	AUX_ECF_AXNECM20060904_061900_20060904_210000_20060905_090000	18	05-SEP-2006 01:18:31
ECMWF_FILE	AUX_ECA_AXNECM20060905_060822_20060904_210000_20060905_090000	19	05-SEP-2006 01:19:43
ECMWF_FILE	AUX_ECF_AXNECM20060904_061900_20060904_210000_20060905_090000	22	05-SEP-2006 01:35:25
ECMWF_FILE	AUX_ECA_AXNECM20060905_060822_20060904_210000_20060905_090000	23	05-SEP-2006 01:39:06
ECMWF_FILE	AUX_ECF_AXNECM20060904_061900_20060904_210000_20060905_090000	26	05-SEP-2006 01:47:55
ECMWF_FILE	AUX_ECA_AXNECM20060905_060822_20060904_210000_20060905_090000	27	05-SEP-2006 01:51:01
ECMWF_FILE	AUX_ECF_AXNECM20060904_061900_20060904_210000_20060905_090000	30	05-SEP-2006 02:02:21
ECMWF_FILE	AUX_ECA_AXNECM20060905_060822_20060904_210000_20060905_090000	31	05-SEP-2006 02:04:17
OPTIONAL_ECMWF_FILE	MISSING	1	05-SEP-2006 00:01:18
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20060904_232212_000057382051_00001_23602_0493.N1	1	05-SEP-2006 00:01:18
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20060905_010309_000041442051_00002_23603_0494.N1	15	05-SEP-2006 01:10:00

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