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	27AUG2006 04:31:49
Data source version	GOMOS/5.00
Start time of products	QDS_YESTERDAY(/START)-1D (25AUG2006 00:00:00)
Stop time of products	QDS_YESTERDAY(/STOP)-1D (26AUG2006 00:00:00)
Store outputs in DB	Yes
Nb of level 1b prods	40
Nb of prods with errors	10

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_1PNPDE20060825_001422_000000422050_00345_23445_1046.N1	25-AUG-2006 00:14:22	Dark	42.000	1	9Alp CMa	-1.4400	11000.	84	23445	No
2	GOM_TRA_1PNPDE20060825_001549_000000342050_00345_23445_1047.N1	25-AUG-2006 00:15:49	Dark	33.500	179	24Omi2CMa	3.0320	24000.	67	23445	No
3	GOM_TRA_1PNPDE20060825_001717_000000392050_00345_23445_1048.N1	25-AUG-2006 00:17:17	Dark	39.000	23	21Eps CMa	1.5020	26000.	78	23445	No
4	GOM_TRA_1PNPDE20060825_001903_000000402050_00345_23445_1025.N1	25-AUG-2006 00:19:03	Dark	39.500	117	Pi Pup	2.7060	3800.0	79	23445	No
5	GOM_TRA_1PNPDE20060825_002406_000000402050_00345_23445_1050.N1	25-AUG-2006 00:24:06	Dark	40.000	2	Alp Car	-0.73600	7000.0	80	23445	No
6	GOM_TRA_1PNPDE20060825_015458_000000492050_00346_23446_1023.N1	25-AUG-2006 01:54:58	Dark	49.000	1	9Alp CMa	-1.4400	11000.	98	23446	No
7	GOM_TRA_1PNPDE20060825_015625_000000332050_00346_23446_1024.N1	25-AUG-2006 01:56:25	Dark	33.000	179	24Omi2CMa	3.0320	24000.	66	23446	No
8	GOM_TRA_1PNPDE20060825_015940_000000392050_00346_23446_1025.N1	25-AUG-2006 01:59:40	Dark	39.000	117	Pi Pup	2.7060	3800.0	78	23446	No
9	GOM_TRA_1PNPDE20060825_020442_000000472050_00346_23446_1026.N1	25-AUG-2006 02:04:42	Dark	47.000	2	Alp Car	-0.73600	7000.0	94	23446	No
10	GOM_TRA_1PNPDE20060825_021446_000000322050_00347_23447_1027.N1	25-AUG-2006 02:14:46	Dark	31.500	143	Alp Hyi	2.8570	7200.0	63	23447	No
11	GOM_TRA_1PNPDE20060825_021556_000000392050_00347_23447_1028.N1	25-AUG-2006 02:15:56	Dark	38.500	9	Alp Eri	0.45300	24000.	77	23447	No
12	GOM_TRA_1PNPDE20060825_022055_000000352050_00347_23447_1029.N1	25-AUG-2006 02:20:55	Straylight	35.000	148	Alp Tuc	2.8780	4100.0	70	23447	No
13	GOM_TRA_1PNPDE20060825_022432_000000352050_00347_23447_1030.N1	25-AUG-2006 02:24:32	Straylight	34.500	31	Alp Gru	1.7340	15200.	69	23447	No
14	GOM_TRA_1PNPDE20060825_022725_000000342050_00347_23447_1031.N1	25-AUG-2006 02:27:25	Straylight	34.000	172	Gam Gru	3.0030	13100.	68	23447	No
15	GOM_TRA_1PNPDE20060825_023342_000000382050_00347_23447_1032.N1	25-AUG-2006 02:33:42	Bright	37.500	142	49Del Cap	2.8500	8900.0	75	23447	No
16	GOM_TRA_1PNPDE20060825_023656_000000332050_00347_23447_1033.N1	25-AUG-2006 02:36:56	Bright	33.000	154	22Bet Aqr	2.8990	5700.0	66	23447	No
17	GOM_TRA_1PNPDE20060825_024823_000000292050_00347_23447_1034.N1	25-AUG-2006 02:48:23	Bright	29.000	92	53Eps Cyg	2.5000	4500.0	58	23447	Yes
18	GOM_TRA_1PNPDE20060825_025008_000000312050_00347_23447_1035.N1	25-AUG-2006 02:50:08	Bright	30.500	66	37Gam Cyg	2.2080	5900.0	61	23447	Yes
19	GOM_TRA_1PNPDE20060825_025134_000000322050_00347_23447_1036.N1	25-AUG-2006 02:51:34	Bright	32.000	19	50Alp Cyg	1.2460	10500.	64	23447	No
20	GOM_TRA_1PNPDE20060825_025645_000000302050_00347_23447_1037.N1	25-AUG-2006 02:56:45	Bright	30.000	89	5Alp Cep	2.4510	8000.0	60	23447	Yes
21	GOM_TRA_1PNPDE20060825_030412_000000282050_00347_23447_1038.N1	25-AUG-2006 03:04:12	Bright	28.000	49	1Alp UMi	1.9900	6300.0	56	23447	Yes
22	GOM_TRA_1PNPDE20060825_050129_000000312050_00348_23448_1027.N1	25-AUG-2006 05:01:29	Bright	30.500	24	66Alp Gem	1.5800	10200.	61	23448	No
23	GOM_TRA_1PNPDE20060825_050818_000000332050_00348_23448_1028.N1	25-AUG-2006 05:08:18	Twilight	33.000	153	3Bet CMi	2.8940	13100.	66	23448	No
24	GOM_TRA_1PNPDE20060825_051612_000000492050_00348_23448_1029.N1	25-AUG-2006 05:16:12	Dark	48.500	1	9Alp CMa	-1.4400	11000.	97	23448	No
25	GOM_TRA_1PNPDE20060825_051738_000000332050_00348_23448_1030.N1	25-AUG-2006 05:17:38	Dark	33.000	179	24Omi2CMa	3.0320	24000.	66	23448	No
26	GOM_TRA_1PNPDE20060825_051906_000000362050_00348_23448_1031.N1	25-AUG-2006 05:19:06	Dark	35.500	23	21Eps CMa	1.5020	26000.	71	23448	No
27	GOM_TRA_1PNPDE20060825_052052_000000362050_00348_23448_1032.N1	25-AUG-2006 05:20:52	Dark	35.500	117	Pi Pup	2.7060	3800.0	71	23448	No
28	GOM_TRA_1PNPDE20060825_052555_000000412050_00348_23448_1033.N1	25-AUG-2006 05:25:55	Dark	40.500	2	Alp Car	-0.73600	7000.0	81	23448	No
29	GOM_TRA_1PNPDE20060825_053559_000000342050_00349_23449_1034.N1	25-AUG-2006 05:35:59	Dark	34.000	143	Alp Hyi	2.8570	7200.0	68	23449	No
30	GOM_TRA_1PNPDE20060825_053709_000000392050_00349_23449_1035.N1	25-AUG-2006 05:37:09	Dark	38.500	9	Alp Eri	0.45300	24000.	77	23449	No
31	GOM_TRA_1PNPDE20060825_054207_000000342050_00349_23449_1036.N1	25-AUG-2006 05:42:07	Straylight	34.000	148	Alp Tuc	2.8780	4100.0	68	23449	No
32	GOM_TRA_1PNPDE20060825_054545_000000342050_00349_23449_1037.N1	25-AUG-2006 05:45:45	Straylight	34.000	31	Alp Gru	1.7340	15200.	68	23449	No
33	GOM_TRA_1PNPDE20060825_054838_000000352050_00349_23449_1038.N1	25-AUG-2006 05:48:38	Straylight	34.500	172	Gam Gru	3.0030	13100.	69	23449	No
34	GOM_TRA_1PNPDE20060825_055454_000000492050_00349_23449_1039.N1	25-AUG-2006 05:54:54	Bright	49.000	142	49Del Cap	2.8500	8900.0	98	23449	No
35	GOM_TRA_1PNPDE20060825_055809_000000332050_00349_23449_1040.N1	25-AUG-2006 05:58:09	Bright	33.000	154	22Bet Aqr	2.8990	5700.0	66	23449	Yes
36	GOM_TRA_1PNPDE20060825_060935_000000322050_00349_23449_1041.N1	25-AUG-2006 06:09:35	Bright	32.000	92	53Eps Cyg	2.5000	4500.0	64	23449	Yes
37	GOM_TRA_1PNPDE20060825_061120_000000332050_00349_23449_1042.N1	25-AUG-2006 06:11:20	Bright	32.500	66	37Gam Cyg	2.2080	5900.0	65	23449	Yes
38	GOM_TRA_1PNPDE20060825_061246_000000322050_00349_23449_1043.N1	25-AUG-2006 06:12:46	Bright	32.000	19	50Alp Cyg	1.2460	10500.	64	23449	Yes
39	GOM_TRA_1PNPDE20060825_061756_000000312050_00349_23449_1044.N1	25-AUG-2006 06:17:56	Bright	31.000	89	5Alp Cep	2.4510	8000.0	62	23449	Yes
40	GOM_TRA_1PNPDE20060825_062524_000000292050_00349_23449_1045.N1	25-AUG-2006 06:25:24	Bright	29.000	49	1Alp UMi	1.9900	6300.0	58	23449	Yes

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:	33.3333 %
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:	12.400	15.206	16.716
St. deviation:	5.4306	6.6868	0.0000
Maximum:	23.774	21.090	16.716
Minimum:	3.7320	4.3067	16.716
Number of data:	18.000	5.0000	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:	0.0085020	-1.9782	0.12040	-2.0843
St. deviation:	0.47126	1.7368	0.64129	1.9380
Maximum:	3.6000	4.5000	3.2000	2.1000
Minimum:	-0.40000	-6.4000	-3.0000	-8.0000
Number of data:	5850.0	5850.0	1450.0	1450.0

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	25-AUG-2006 00:14:22
CALIBRATION_DATABASE	GOM_CAL_AXVIEC20060825_091604_20060823_000000_20100101_000000	1	25-AUG-2006 00:14:22
CALIBRATION_DATABASE	GOM_CAL_AXVIEC20060817_094138_20060816_000000_20100101_000000	4	25-AUG-2006 00:19:03
CALIBRATION_DATABASE	GOM_CAL_AXVIEC20060825_091604_20060823_000000_20100101_000000	5	25-AUG-2006 00:24:06
CALIBRATION_DATABASE	GOM_CAL_AXVIEC20060817_094138_20060816_000000_20100101_000000	6	25-AUG-2006 01:54:58
LEVEL-1B_PROC_CONFIG	GOM_PR1_AXNIEC20050627_151042_20020301_000000_20100101_000000	1	25-AUG-2006 00:14:22
STAR_CATALOGUE	GOM_CAT_AXVIEC20020121_161009_20020101_000000_20200101_000000	1	25-AUG-2006 00:14:22
STELLAR_SPECTRA_DATABANK	GOM_STS_AXNIEC20040308_103538_20020101_160000_20100101_000000	1	25-AUG-2006 00:14:22
ECMWF_FILE	AUX_ECA_AXNECM20060825_061723_20060824_210000_20060825_090000	1	25-AUG-2006 00:14:22
ECMWF_FILE	AUX_ECF_AXNECM20060824_064717_20060824_210000_20060825_090000	4	25-AUG-2006 00:19:03
ECMWF_FILE	AUX_ECA_AXNECM20060825_061723_20060824_210000_20060825_090000	5	25-AUG-2006 00:24:06
ECMWF_FILE	AUX_ECF_AXNECM20060824_064717_20060824_210000_20060825_090000	6	25-AUG-2006 01:54:58
ECMWF_FILE	AUX_ECF_AXNECM20060824_181721_20060825_030000_20060825_150000	22	25-AUG-2006 05:01:29
OPTIONAL_ECMWF_FILE	MISSING	1	25-AUG-2006 00:14:22
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20060825_001131_000054192050_00345_23445_0419.N1	1	25-AUG-2006 00:14:22
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20060825_014710_000041442050_00346_23446_0420.N1	6	25-AUG-2006 01:54:58
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20060825_044748_000054192050_00348_23448_0422.N1	22	25-AUG-2006 05:01:29

Reports

Daily Report Level 2 Dataset IPF v6.01

Daily Reports of NRT data

Data Anomaly Reports

Instrument Anomaly Reports

Monthly Reports

e-mail webmaster

Last modified:
24-Apr-2008