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	19MAY2007 05:37:07
Data source version	GOMOS/5.00
Start time of products	QDS_YESTERDAY(/START) (18MAY2007 00:00:00)
Stop time of products	QDS_YESTERDAY(/STOP) (19MAY2007 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 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)

No missing products.

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_1PNPDE20070518_000528_000000382058_00145_27253_0143.N1	18-MAY-2007 00:05:28	Bright	37.500	83		2.3780	11000.	75	27253	No
2	GOM_TRA_1PNPDE20070518_000836_000000342058_00145_27253_0144.N1	18-MAY-2007 00:08:36	Bright	34.000	180	27Gam Boo	3.0400	8000.0	68	27253	No
3	GOM_TRA_1PNPDE20070518_001710_000000432058_00145_27253_0145.N1	18-MAY-2007 00:17:10	Bright	42.500	119	14Eta Dra	2.7270	4700.0	85	27253	No
4	GOM_TRA_1PNPDE20070518_002807_000000502058_00145_27253_0146.N1	18-MAY-2007 00:28:07	Bright	50.000	89	5Alp Cep	2.4510	8000.0	100	27253	No
5	GOM_TRA_1PNPDE20070518_003149_000000372058_00145_27253_0147.N1	18-MAY-2007 00:31:49	Bright	36.500	74	11Bet Cas	2.2680	6600.0	73	27253	No
6	GOM_TRA_1PNPDE20070518_004107_000000462058_00145_27253_0148.N1	18-MAY-2007 00:41:07	Twi_and_stray	45.500	58	21Alp And	2.0730	11000.	91	27253	No
7	GOM_TRA_1PNPDE20070518_004519_000000422058_00145_27253_0149.N1	18-MAY-2007 00:45:19	Dark	41.500	140	88Gam Peg	2.8340	26000.	83	27253	No
8	GOM_TRA_1PNPDE20070518_004703_000000562058_00145_27253_0150.N1	18-MAY-2007 00:47:03	Dark	55.500	90	54Alp Peg	2.4870	11000.	111	27253	No
9	GOM_TRA_1PNPDE20070518_010047_000000452058_00145_27253_0263.N1	18-MAY-2007 01:00:47	Dark	45.000	18	24Alp PsA	1.1660	9700.0	90	27253	No
10	GOM_TRA_1PNPDE20070518_010636_000000482058_00146_27254_0264.N1	18-MAY-2007 01:06:36	Dark	48.000	31	Alp Gru	1.7340	15200.	96	27254	No
11	GOM_TRA_1PNPDE20070518_011208_000000432058_00146_27254_0265.N1	18-MAY-2007 01:12:08	Dark	42.500	45	Alp Pav	1.9400	26000.	85	27254	No
12	GOM_TRA_1PNPDE20070518_012019_000000442058_00146_27254_0266.N1	18-MAY-2007 01:20:19	Straylight	44.000	147	Alp Ara	2.8770	26000.	88	27254	No
13	GOM_TRA_1PNPDE20070518_012151_000000462058_00146_27254_0267.N1	18-MAY-2007 01:21:51	Straylight	46.000	40	The Sco	1.8590	7100.0	92	27254	No
14	GOM_TRA_1PNPDE20070518_012343_000000522058_00146_27254_0268.N1	18-MAY-2007 01:23:43	Straylight	52.000	25	35Lam Sco	1.6200	28000.	104	27254	No
15	GOM_TRA_1PNPDE20070518_012600_000000502058_00146_27254_0269.N1	18-MAY-2007 01:26:00	Twi_and_stray	50.000	75	26Eps Sco	2.2910	4250.0	100	27254	No
16	GOM_TRA_1PNPDE20070518_012902_000000572058_00146_27254_0270.N1	18-MAY-2007 01:29:02	Twi_and_stray	56.500	16	21Alp Sco	1.0200	3000.0	113	27254	No
17	GOM_TRA_1PNPDE20070518_013135_000000452058_00146_27254_0271.N1	18-MAY-2007 01:31:35	Bright	44.500	97	8Bet1Sco	2.5610	30000.	89	27254	No
18	GOM_TRA_1PNPDE20070518_013513_000000392058_00146_27254_0272.N1	18-MAY-2007 01:35:13	Bright	39.000	104	27Bet Lib	2.6140	13100.	78	27254	No
19	GOM_TRA_1PNPDE20070518_013717_000000492058_00146_27254_0273.N1	18-MAY-2007 01:37:17	Bright	48.500	120	1Del Oph	2.7340	3200.0	97	27254	No
20	GOM_TRA_1PNPDE20070518_014025_000000432058_00146_27254_0274.N1	18-MAY-2007 01:40:25	Bright	42.500	102	24Alp Ser	2.6000	4250.0	85	27254	No
21	GOM_TRA_1PNPDE20070518_014603_000000372058_00146_27254_0275.N1	18-MAY-2007 01:46:03	Bright	37.000	83		2.3780	11000.	74	27254	No
22	GOM_TRA_1PNPDE20070518_015746_000000582058_00146_27254_0276.N1	18-MAY-2007 01:57:46	Bright	57.500	119	14Eta Dra	2.7270	4700.0	115	27254	No
23	GOM_TRA_1PNPDE20070518_020842_000000442058_00146_27254_0418.N1	18-MAY-2007 02:08:42	Bright	44.000	89	5Alp Cep	2.4510	8000.0	88	27254	No
24	GOM_TRA_1PNPDE20070518_021225_000000422058_00146_27254_0419.N1	18-MAY-2007 02:12:25	Bright	41.500	74	11Bet Cas	2.2680	6600.0	83	27254	No
25	GOM_TRA_1PNPDE20070518_022143_000000452058_00146_27254_0420.N1	18-MAY-2007 02:21:43	Twi_and_stray	44.500	58	21Alp And	2.0730	11000.	89	27254	No
26	GOM_TRA_1PNPDE20070518_022556_000000442058_00146_27254_0421.N1	18-MAY-2007 02:25:56	Dark	44.000	140	88Gam Peg	2.8340	26000.	88	27254	No
27	GOM_TRA_1PNPDE20070518_022740_000000482058_00146_27254_0422.N1	18-MAY-2007 02:27:40	Dark	48.000	90	54Alp Peg	2.4870	11000.	96	27254	No
28	GOM_TRA_1PNPDE20070518_024124_000000522058_00146_27254_0423.N1	18-MAY-2007 02:41:24	Dark	52.000	18	24Alp PsA	1.1660	9700.0	104	27254	No
29	GOM_TRA_1PNPDE20070518_024712_000000422058_00147_27255_0424.N1	18-MAY-2007 02:47:12	Dark	42.000	31	Alp Gru	1.7340	15200.	84	27255	No
30	GOM_TRA_1PNPDE20070518_025245_000000412058_00147_27255_0425.N1	18-MAY-2007 02:52:45	Dark	41.000	45	Alp Pav	1.9400	26000.	82	27255	No
31	GOM_TRA_1PNPDE20070518_030055_000000422058_00147_27255_0426.N1	18-MAY-2007 03:00:55	Straylight	42.000	147	Alp Ara	2.8770	26000.	84	27255	No
32	GOM_TRA_1PNPDE20070518_030228_000000502058_00147_27255_0427.N1	18-MAY-2007 03:02:28	Straylight	49.500	40	The Sco	1.8590	7100.0	99	27255	No
33	GOM_TRA_1PNPDE20070518_030420_000000532058_00147_27255_0428.N1	18-MAY-2007 03:04:20	Straylight	53.000	25	35Lam Sco	1.6200	28000.	106	27255	No
34	GOM_TRA_1PNPDE20070518_030636_000000532058_00147_27255_0429.N1	18-MAY-2007 03:06:36	Twi_and_stray	52.500	75	26Eps Sco	2.2910	4250.0	105	27255	No
35	GOM_TRA_1PNPDE20070518_030938_000000642058_00147_27255_0430.N1	18-MAY-2007 03:09:38	Twi_and_stray	64.000	16	21Alp Sco	1.0200	3000.0	128	27255	No
36	GOM_TRA_1PNPDE20070518_031212_000000432058_00147_27255_0431.N1	18-MAY-2007 03:12:12	Bright	43.000	97	8Bet1Sco	2.5610	30000.	86	27255	No
37	GOM_TRA_1PNPDE20070518_031549_000000392058_00147_27255_0432.N1	18-MAY-2007 03:15:49	Bright	38.500	104	27Bet Lib	2.6140	13100.	77	27255	No
38	GOM_TRA_1PNPDE20070518_031752_000000482058_00147_27255_0433.N1	18-MAY-2007 03:17:52	Bright	48.000	120	1Del Oph	2.7340	3200.0	96	27255	No
39	GOM_TRA_1PNPDE20070518_032101_000000432058_00147_27255_0434.N1	18-MAY-2007 03:21:01	Bright	42.500	102	24Alp Ser	2.6000	4250.0	85	27255	No
40	GOM_TRA_1PNPDE20070518_032639_000000382058_00147_27255_0435.N1	18-MAY-2007 03:26:39	Bright	38.000	83		2.3780	11000.	76	27255	No
41	GOM_TRA_1PNPDE20070518_033821_000000402058_00147_27255_0436.N1	18-MAY-2007 03:38:21	Bright	40.000	119	14Eta Dra	2.7270	4700.0	80	27255	No
42	GOM_TRA_1PNPDE20070518_034918_000000662058_00147_27255_0621.N1	18-MAY-2007 03:49:18	Bright	66.000	89	5Alp Cep	2.4510	8000.0	132	27255	No
43	GOM_TRA_1PNPDE20070518_035301_000000552058_00147_27255_0622.N1	18-MAY-2007 03:53:01	Bright	55.000	74	11Bet Cas	2.2680	6600.0	110	27255	No
44	GOM_TRA_1PNPDE20070518_040219_000000452058_00147_27255_0623.N1	18-MAY-2007 04:02:19	Twi_and_stray	45.000	58	21Alp And	2.0730	11000.	90	27255	No
45	GOM_TRA_1PNPDE20070518_040632_000000442058_00147_27255_0624.N1	18-MAY-2007 04:06:32	Dark	44.000	140	88Gam Peg	2.8340	26000.	88	27255	No
46	GOM_TRA_1PNPDE20070518_040816_000000482058_00147_27255_0625.N1	18-MAY-2007 04:08:16	Dark	48.000	90	54Alp Peg	2.4870	11000.	96	27255	No
47	GOM_TRA_1PNPDE20070518_042201_000000592058_00147_27255_0626.N1	18-MAY-2007 04:22:01	Dark	58.500	18	24Alp PsA	1.1660	9700.0	117	27255	No
48	GOM_TRA_1PNPDE20070518_042749_000000442058_00148_27256_0627.N1	18-MAY-2007 04:27:49	Dark	43.500	31	Alp Gru	1.7340	15200.	87	27256	No
49	GOM_TRA_1PNPDE20070518_043321_000000422058_00148_27256_0628.N1	18-MAY-2007 04:33:21	Dark	42.000	45	Alp Pav	1.9400	26000.	84	27256	No
50	GOM_TRA_1PNPDE20070518_044132_000000432058_00148_27256_0629.N1	18-MAY-2007 04:41:32	Straylight	43.000	147	Alp Ara	2.8770	26000.	86	27256	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:	32.0000 %
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:	16.952	18.001	NaN
St. deviation:	5.0088	6.4334	NaN
Maximum:	24.780	26.421	NaN
Minimum:	5.9458	3.2972	NaN
Number of data:	15.000	21.000	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:	0.22447	-1.0101	0.29184	-0.98135
St. deviation:	0.70523	2.3404	0.80892	2.5771
Maximum:	4.5000	8.6000	5.2000	8.4000
Minimum:	-4.5000	-13.500	-5.2000	-10.900
Number of data:	15750.	15750.	19850.	19850.

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	18-MAY-2007 00:05:28
CALIBRATION_DATABASE	GOM_CAL_AXVIEC20070503_074756_20070502_000000_20100101_000000	1	18-MAY-2007 00:05:28
LEVEL-1B_PROC_CONFIG	GOM_PR1_AXNIEC20050627_151042_20020301_000000_20100101_000000	1	18-MAY-2007 00:05:28
STAR_CATALOGUE	GOM_CAT_AXVIEC20020121_161009_20020101_000000_20200101_000000	1	18-MAY-2007 00:05:28
STELLAR_SPECTRA_DATABANK	GOM_STS_AXNIEC20040308_103538_20020101_160000_20100101_000000	1	18-MAY-2007 00:05:28
ECMWF_FILE	AUX_ECF_AXNECM20070517_062111_20070517_210000_20070518_090000	1	18-MAY-2007 00:05:28
ECMWF_FILE	AUX_ECF_AXNECM20070517_182113_20070518_030000_20070518_150000	42	18-MAY-2007 03:49:18
OPTIONAL_ECMWF_FILE	MISSING	1	18-MAY-2007 00:05:28
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20070517_212846_000057382058_00143_27251_3502.N1	1	18-MAY-2007 00:05:28
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20070517_230943_000057382058_00144_27252_3503.N1	9	18-MAY-2007 01:00:47
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20070518_005040_000041442058_00145_27253_3504.N1	23	18-MAY-2007 02:08:42
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20070518_020503_000057382058_00146_27254_3505.N1	42	18-MAY-2007 03:49:18

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