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	20AUG2006 04:32:13
Data source version	GOMOS/5.00
Start time of products	QDS_YESTERDAY(/START)-1D (18AUG2006 00:00:00)
Stop time of products	QDS_YESTERDAY(/STOP)-1D (19AUG2006 00:00:00)
Store outputs in DB	Yes
Nb of level 1b prods	50
Nb of prods with errors	6

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_1PNPDE20060818_003525_000000342050_00245_23345_0925.N1	18-AUG-2006 00:35:25	Dark	33.500	179	24Omi2CMa	3.0320	24000.	67	23345	No
2	GOM_TRA_1PNPDE20060818_003652_000000362050_00245_23345_0926.N1	18-AUG-2006 00:36:52	Dark	36.000	23	21Eps CMa	1.5020	26000.	72	23345	No
3	GOM_TRA_1PNPDE20060818_004342_000000382050_00245_23345_0927.N1	18-AUG-2006 00:43:42	Dark	38.000	2	Alp Car	-0.73600	7000.0	76	23345	No
4	GOM_TRA_1PNPDE20060818_005421_000000382050_00246_23346_0928.N1	18-AUG-2006 00:54:21	Dark	37.500	9	Alp Eri	0.45300	24000.	75	23346	No
5	GOM_TRA_1PNPDE20060818_005957_000000342050_00246_23346_0929.N1	18-AUG-2006 00:59:57	Straylight	34.000	148	Alp Tuc	2.8780	4100.0	68	23346	No
6	GOM_TRA_1PNPDE20060818_010331_000000352050_00246_23346_0930.N1	18-AUG-2006 01:03:31	Straylight	35.000	31	Alp Gru	1.7340	15200.	70	23346	No
7	GOM_TRA_1PNPDE20060818_010629_000000352050_00246_23346_0931.N1	18-AUG-2006 01:06:29	Straylight	35.000	172	Gam Gru	3.0030	13100.	70	23346	No
8	GOM_TRA_1PNPDE20060818_012056_000000302050_00246_23346_0932.N1	18-AUG-2006 01:20:56	Bright	30.000	11	53Alp Aql	0.76500	8000.0	60	23346	No
9	GOM_TRA_1PNPDE20060818_012806_000000332050_00246_23346_0933.N1	18-AUG-2006 01:28:06	Bright	33.000	92	53Eps Cyg	2.5000	4500.0	66	23346	No
10	GOM_TRA_1PNPDE20060818_012943_000000322050_00246_23346_0934.N1	18-AUG-2006 01:29:43	Bright	31.500	66	37Gam Cyg	2.2080	5900.0	63	23346	No
11	GOM_TRA_1PNPDE20060818_013103_000000292050_00246_23346_0935.N1	18-AUG-2006 01:31:03	Bright	29.000	144	18Del Cyg	2.8600	11000.	58	23346	No
12	GOM_TRA_1PNPDE20060818_013638_000000302050_00246_23346_0936.N1	18-AUG-2006 01:36:38	Bright	29.500	89	5Alp Cep	2.4510	8000.0	59	23346	No
13	GOM_TRA_1PNPDE20060818_014345_000000312050_00246_23346_0937.N1	18-AUG-2006 01:43:45	Bright	30.500	49	1Alp UMi	1.9900	6300.0	61	23346	Yes
14	GOM_TRA_1PNPDE20060818_020340_000000392050_00246_23346_0938.N1	18-AUG-2006 02:03:40	Twi_and_stray	39.000	151	13Mu Gem	2.8900	3000.0	78	23346	No
15	GOM_TRA_1PNPDE20060818_020516_000000362050_00246_23346_0939.N1	18-AUG-2006 02:05:16	Twi_and_stray	35.500	44	24Gam Gem	1.9280	11000.	71	23346	No
16	GOM_TRA_1PNPDE20060818_021425_000000432050_00246_23346_0926.N1	18-AUG-2006 02:14:25	Dark	43.000	1	9Alp CMa	-1.4400	11000.	86	23346	No
17	GOM_TRA_1PNPDE20060818_022418_000000452050_00246_23346_0927.N1	18-AUG-2006 02:24:18	Dark	44.500	2	Alp Car	-0.73600	7000.0	89	23346	No
18	GOM_TRA_1PNPDE20060818_023458_000000402050_00247_23347_0928.N1	18-AUG-2006 02:34:58	Dark	40.000	9	Alp Eri	0.45300	24000.	80	23347	No
19	GOM_TRA_1PNPDE20060818_024033_000000352050_00247_23347_0929.N1	18-AUG-2006 02:40:33	Straylight	34.500	148	Alp Tuc	2.8780	4100.0	69	23347	No
20	GOM_TRA_1PNPDE20060818_024408_000000352050_00247_23347_0930.N1	18-AUG-2006 02:44:08	Straylight	35.000	31	Alp Gru	1.7340	15200.	70	23347	No
21	GOM_TRA_1PNPDE20060818_024705_000000342050_00247_23347_0931.N1	18-AUG-2006 02:47:05	Straylight	34.000	172	Gam Gru	3.0030	13100.	68	23347	No
22	GOM_TRA_1PNPDE20060818_030132_000000312050_00247_23347_0932.N1	18-AUG-2006 03:01:32	Bright	30.500	11	53Alp Aql	0.76500	8000.0	61	23347	No
23	GOM_TRA_1PNPDE20060818_030842_000000312050_00247_23347_0933.N1	18-AUG-2006 03:08:42	Bright	31.000	92	53Eps Cyg	2.5000	4500.0	62	23347	No
24	GOM_TRA_1PNPDE20060818_031019_000000292050_00247_23347_0934.N1	18-AUG-2006 03:10:19	Bright	29.000	66	37Gam Cyg	2.2080	5900.0	58	23347	No
25	GOM_TRA_1PNPDE20060818_031139_000000292050_00247_23347_0935.N1	18-AUG-2006 03:11:39	Bright	28.500	144	18Del Cyg	2.8600	11000.	57	23347	Yes
26	GOM_TRA_1PNPDE20060818_031714_000000312050_00247_23347_0936.N1	18-AUG-2006 03:17:14	Bright	30.500	89	5Alp Cep	2.4510	8000.0	61	23347	No
27	GOM_TRA_1PNPDE20060818_032421_000000272050_00247_23347_0937.N1	18-AUG-2006 03:24:21	Bright	27.000	49	1Alp UMi	1.9900	6300.0	54	23347	Yes
28	GOM_TRA_1PNPDE20060818_034416_000000392050_00247_23347_0927.N1	18-AUG-2006 03:44:16	Twi_and_stray	39.000	151	13Mu Gem	2.8900	3000.0	78	23347	No
29	GOM_TRA_1PNPDE20060818_034552_000000372050_00247_23347_0928.N1	18-AUG-2006 03:45:52	Twi_and_stray	36.500	44	24Gam Gem	1.9280	11000.	73	23347	No
30	GOM_TRA_1PNPDE20060818_035502_000000392050_00247_23347_0929.N1	18-AUG-2006 03:55:02	Dark	39.000	1	9Alp CMa	-1.4400	11000.	78	23347	No
31	GOM_TRA_1PNPDE20060818_035637_000000322050_00247_23347_0930.N1	18-AUG-2006 03:56:37	Dark	32.000	179	24Omi2CMa	3.0320	24000.	64	23347	No
32	GOM_TRA_1PNPDE20060818_035805_000000382050_00247_23347_0931.N1	18-AUG-2006 03:58:05	Dark	37.500	23	21Eps CMa	1.5020	26000.	75	23347	No
33	GOM_TRA_1PNPDE20060818_040455_000000432050_00247_23347_0932.N1	18-AUG-2006 04:04:55	Dark	43.000	2	Alp Car	-0.73600	7000.0	86	23347	No
34	GOM_TRA_1PNPDE20060818_041534_000000402050_00248_23348_0933.N1	18-AUG-2006 04:15:34	Dark	39.500	9	Alp Eri	0.45300	24000.	79	23348	No
35	GOM_TRA_1PNPDE20060818_042109_000000362050_00248_23348_0934.N1	18-AUG-2006 04:21:09	Straylight	35.500	148	Alp Tuc	2.8780	4100.0	71	23348	No
36	GOM_TRA_1PNPDE20060818_042444_000000382050_00248_23348_0935.N1	18-AUG-2006 04:24:44	Straylight	38.000	31	Alp Gru	1.7340	15200.	76	23348	No
37	GOM_TRA_1PNPDE20060818_042742_000000332050_00248_23348_0936.N1	18-AUG-2006 04:27:42	Straylight	33.000	172	Gam Gru	3.0030	13100.	66	23348	No
38	GOM_TRA_1PNPDE20060818_044208_000000332050_00248_23348_0937.N1	18-AUG-2006 04:42:08	Bright	32.500	11	53Alp Aql	0.76500	8000.0	65	23348	No
39	GOM_TRA_1PNPDE20060818_044918_000000332050_00248_23348_0938.N1	18-AUG-2006 04:49:18	Bright	32.500	92	53Eps Cyg	2.5000	4500.0	65	23348	No
40	GOM_TRA_1PNPDE20060818_045055_000000312050_00248_23348_0939.N1	18-AUG-2006 04:50:55	Bright	30.500	66	37Gam Cyg	2.2080	5900.0	61	23348	Yes
41	GOM_TRA_1PNPDE20060818_045216_000000292050_00248_23348_0940.N1	18-AUG-2006 04:52:16	Bright	28.500	144	18Del Cyg	2.8600	11000.	57	23348	Yes
42	GOM_TRA_1PNPDE20060818_045750_000000322050_00248_23348_0941.N1	18-AUG-2006 04:57:50	Bright	31.500	89	5Alp Cep	2.4510	8000.0	63	23348	No
43	GOM_TRA_1PNPDE20060818_050457_000000292050_00248_23348_0942.N1	18-AUG-2006 05:04:57	Bright	28.500	49	1Alp UMi	1.9900	6300.0	57	23348	Yes
44	GOM_TRA_1PNPDE20060818_052349_000000332050_00248_23348_0928.N1	18-AUG-2006 05:23:49	Bright	33.000	170	27Eps Gem	3.0000	9700.0	66	23348	No
45	GOM_TRA_1PNPDE20060818_052628_000000382050_00248_23348_0929.N1	18-AUG-2006 05:26:28	Twi_and_stray	38.000	44	24Gam Gem	1.9280	11000.	76	23348	No
46	GOM_TRA_1PNPDE20060818_053538_000000442050_00248_23348_0930.N1	18-AUG-2006 05:35:38	Dark	43.500	1	9Alp CMa	-1.4400	11000.	87	23348	No
47	GOM_TRA_1PNPDE20060818_053714_000000322050_00248_23348_0931.N1	18-AUG-2006 05:37:14	Dark	32.000	179	24Omi2CMa	3.0320	24000.	64	23348	No
48	GOM_TRA_1PNPDE20060818_053841_000000362050_00248_23348_0932.N1	18-AUG-2006 05:38:41	Dark	35.500	23	21Eps CMa	1.5020	26000.	71	23348	No
49	GOM_TRA_1PNPDE20060818_054531_000000372050_00248_23348_0933.N1	18-AUG-2006 05:45:31	Dark	37.000	2	Alp Car	-0.73600	7000.0	74	23348	No
50	GOM_TRA_1PNPDE20060818_055611_000000372050_00249_23349_0934.N1	18-AUG-2006 05:56:11	Dark	37.000	9	Alp Eri	0.45300	24000.	74	23349	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:	29.5455 %
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:	12.363	21.116	NaN
St. deviation:	4.1280	2.8578	NaN
Maximum:	17.965	26.106	NaN
Minimum:	5.4732	16.198	NaN
Number of data:	17.000	13.000	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:	-0.034232	-2.0421	0.044933	-3.4639
St. deviation:	0.40227	1.9379	0.61358	2.3535
Maximum:	4.2000	4.5000	3.7000	2.8000
Minimum:	-0.50000	-6.3000	-1.5000	-5.7000
Number of data:	5600.0	5600.0	3600.0	3600.0

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	18-AUG-2006 00:35:25
CALIBRATION_DATABASE	GOM_CAL_AXVIEC20060817_094138_20060816_000000_20100101_000000	1	18-AUG-2006 00:35:25
LEVEL-1B_PROC_CONFIG	GOM_PR1_AXNIEC20050627_151042_20020301_000000_20100101_000000	1	18-AUG-2006 00:35:25
STAR_CATALOGUE	GOM_CAT_AXVIEC20020121_161009_20020101_000000_20200101_000000	1	18-AUG-2006 00:35:25
STELLAR_SPECTRA_DATABANK	GOM_STS_AXNIEC20040308_103538_20020101_160000_20100101_000000	1	18-AUG-2006 00:35:25
ECMWF_FILE	AUX_ECF_AXNECM20060817_062829_20060817_210000_20060818_090000	1	18-AUG-2006 00:35:25
ECMWF_FILE	AUX_ECF_AXNECM20060817_181854_20060818_030000_20060818_150000	28	18-AUG-2006 03:44:16
OPTIONAL_ECMWF_FILE	MISSING	1	18-AUG-2006 00:35:25
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20060817_225247_000057382050_00244_23344_0369.N1	1	18-AUG-2006 00:35:25
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20060818_003344_000054192050_00245_23345_0370.N1	16	18-AUG-2006 02:14:25
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20060818_020922_000041442050_00246_23346_0371.N1	28	18-AUG-2006 03:44:16
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20060818_032345_000057382050_00247_23347_0372.N1	44	18-AUG-2006 05:23:49

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