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	21AUG2007 10:29:29
Data source version	GOMOS/5.00
Start time of products	QDS_YESTERDAY(/START)-1D (19AUG2007 00:00:00)
Stop time of products	QDS_YESTERDAY(/STOP)-1D (20AUG2007 00:00:00)
Store outputs in DB	Yes
Nb of level 1b prods	49
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)

UTC start time	Star name	Star ID	Orbit
19-AUG-2007 00:32:19	24Omi2CMa	179	28584

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_1PNPDE20070819_000008_000000352060_00474_28584_2720.N1	19-AUG-2007 00:00:08	Bright	35.000	49	1Alp UMi	1.9900	6300.0	70	28584	No
2	GOM_TRA_1PNPDE20070819_001902_000000392060_00474_28584_2721.N1	19-AUG-2007 00:19:02	Bright	39.000	170	27Eps Gem	3.0000	9700.0	78	28584	No
3	GOM_TRA_1PNPDE20070819_002141_000000452060_00474_28584_2722.N1	19-AUG-2007 00:21:41	Twi_and_stray	44.500	44	24Gam Gem	1.9280	11000.	89	28584	No
4	GOM_TRA_1PNPDE20070819_003052_000000472060_00474_28584_2827.N1	19-AUG-2007 00:30:52	Dark	47.000	1	9Alp CMa	-1.4400	11000.	94	28584	No
5	GOM_TRA_1PNPDE20070819_003354_000000402060_00474_28584_2828.N1	19-AUG-2007 00:33:54	Dark	39.500	23	21Eps CMa	1.5020	26000.	79	28584	No
6	GOM_TRA_1PNPDE20070819_004044_000000492060_00474_28584_2829.N1	19-AUG-2007 00:40:44	Dark	49.000	2	Alp Car	-0.73600	7000.0	98	28584	No
7	GOM_TRA_1PNPDE20070819_005127_000000492060_00475_28585_2830.N1	19-AUG-2007 00:51:27	Dark	48.500	9	Alp Eri	0.45300	24000.	97	28585	No
8	GOM_TRA_1PNPDE20070819_005659_000000422060_00475_28585_2831.N1	19-AUG-2007 00:56:59	Straylight	42.000	148	Alp Tuc	2.8780	4100.0	84	28585	No
9	GOM_TRA_1PNPDE20070819_010034_000000392060_00475_28585_2832.N1	19-AUG-2007 01:00:34	Straylight	39.000	31	Alp Gru	1.7340	15200.	78	28585	No
10	GOM_TRA_1PNPDE20070819_010331_000000412060_00475_28585_2833.N1	19-AUG-2007 01:03:31	Straylight	40.500	172	Gam Gru	3.0030	13100.	81	28585	No
11	GOM_TRA_1PNPDE20070819_011756_000000352060_00475_28585_2834.N1	19-AUG-2007 01:17:56	Bright	35.000	11	53Alp Aql	0.76500	8000.0	70	28585	No
12	GOM_TRA_1PNPDE20070819_012503_000000372060_00475_28585_2835.N1	19-AUG-2007 01:25:03	Bright	37.000	92	53Eps Cyg	2.5000	4500.0	74	28585	No
13	GOM_TRA_1PNPDE20070819_012641_000000382060_00475_28585_2836.N1	19-AUG-2007 01:26:41	Bright	37.500	66	37Gam Cyg	2.2080	5900.0	75	28585	No
14	GOM_TRA_1PNPDE20070819_012803_000000342060_00475_28585_2837.N1	19-AUG-2007 01:28:03	Bright	34.000	144	18Del Cyg	2.8600	11000.	68	28585	No
15	GOM_TRA_1PNPDE20070819_013334_000000342060_00475_28585_2838.N1	19-AUG-2007 01:33:34	Bright	34.000	89	5Alp Cep	2.4510	8000.0	68	28585	No
16	GOM_TRA_1PNPDE20070819_014044_000000362060_00475_28585_2839.N1	19-AUG-2007 01:40:44	Bright	35.500	49	1Alp UMi	1.9900	6300.0	71	28585	No
17	GOM_TRA_1PNPDE20070819_015938_000000392060_00475_28585_2840.N1	19-AUG-2007 01:59:38	Bright	38.500	170	27Eps Gem	3.0000	9700.0	77	28585	No
18	GOM_TRA_1PNPDE20070819_020217_000000402060_00475_28585_2841.N1	19-AUG-2007 02:02:17	Twi_and_stray	39.500	44	24Gam Gem	1.9280	11000.	79	28585	No
19	GOM_TRA_1PNPDE20070819_021128_000000362060_00475_28585_2957.N1	19-AUG-2007 02:11:28	Dark	36.000	1	9Alp CMa	-1.4400	11000.	72	28585	No
20	GOM_TRA_1PNPDE20070819_021303_000000382060_00475_28585_2958.N1	19-AUG-2007 02:13:03	Dark	37.500	179	24Omi2CMa	3.0320	24000.	75	28585	No
21	GOM_TRA_1PNPDE20070819_021430_000000402060_00475_28585_2959.N1	19-AUG-2007 02:14:30	Dark	40.000	23	21Eps CMa	1.5020	26000.	80	28585	No
22	GOM_TRA_1PNPDE20070819_022120_000000452060_00475_28585_2960.N1	19-AUG-2007 02:21:20	Dark	44.500	2	Alp Car	-0.73600	7000.0	89	28585	No
23	GOM_TRA_1PNPDE20070819_023203_000000462060_00476_28586_2961.N1	19-AUG-2007 02:32:03	Dark	46.000	9	Alp Eri	0.45300	24000.	92	28586	No
24	GOM_TRA_1PNPDE20070819_023735_000000422060_00476_28586_2962.N1	19-AUG-2007 02:37:35	Straylight	42.000	148	Alp Tuc	2.8780	4100.0	84	28586	No
25	GOM_TRA_1PNPDE20070819_024110_000000412060_00476_28586_2963.N1	19-AUG-2007 02:41:10	Straylight	40.500	31	Alp Gru	1.7340	15200.	81	28586	No
26	GOM_TRA_1PNPDE20070819_024407_000000402060_00476_28586_2964.N1	19-AUG-2007 02:44:07	Straylight	39.500	172	Gam Gru	3.0030	13100.	79	28586	No
27	GOM_TRA_1PNPDE20070819_025832_000000372060_00476_28586_2965.N1	19-AUG-2007 02:58:32	Bright	36.500	11	53Alp Aql	0.76500	8000.0	73	28586	No
28	GOM_TRA_1PNPDE20070819_030539_000000362060_00476_28586_2966.N1	19-AUG-2007 03:05:39	Bright	35.500	92	53Eps Cyg	2.5000	4500.0	71	28586	No
29	GOM_TRA_1PNPDE20070819_030717_000000352060_00476_28586_2967.N1	19-AUG-2007 03:07:17	Bright	35.000	66	37Gam Cyg	2.2080	5900.0	70	28586	No
30	GOM_TRA_1PNPDE20070819_030839_000000342060_00476_28586_2968.N1	19-AUG-2007 03:08:39	Bright	34.000	144	18Del Cyg	2.8600	11000.	68	28586	No
31	GOM_TRA_1PNPDE20070819_031410_000000382060_00476_28586_2969.N1	19-AUG-2007 03:14:10	Bright	37.500	89	5Alp Cep	2.4510	8000.0	75	28586	No
32	GOM_TRA_1PNPDE20070819_032120_000000332060_00476_28586_2970.N1	19-AUG-2007 03:21:20	Bright	32.500	49	1Alp UMi	1.9900	6300.0	65	28586	No
33	GOM_TRA_1PNPDE20070819_034014_000000382060_00476_28586_3107.N1	19-AUG-2007 03:40:14	Bright	38.000	170	27Eps Gem	3.0000	9700.0	76	28586	No
34	GOM_TRA_1PNPDE20070819_034254_000000422060_00476_28586_3108.N1	19-AUG-2007 03:42:54	Twi_and_stray	41.500	44	24Gam Gem	1.9280	11000.	83	28586	No
35	GOM_TRA_1PNPDE20070819_035204_000000452060_00476_28586_3109.N1	19-AUG-2007 03:52:04	Dark	44.500	1	9Alp CMa	-1.4400	11000.	89	28586	No
36	GOM_TRA_1PNPDE20070819_035339_000000382060_00476_28586_3110.N1	19-AUG-2007 03:53:39	Dark	38.000	179	24Omi2CMa	3.0320	24000.	76	28586	No
37	GOM_TRA_1PNPDE20070819_035506_000000392060_00476_28586_3111.N1	19-AUG-2007 03:55:06	Dark	38.500	23	21Eps CMa	1.5020	26000.	77	28586	No
38	GOM_TRA_1PNPDE20070819_040157_000000432060_00476_28586_3112.N1	19-AUG-2007 04:01:57	Dark	43.000	2	Alp Car	-0.73600	7000.0	86	28586	No
39	GOM_TRA_1PNPDE20070819_041240_000000482060_00477_28587_3113.N1	19-AUG-2007 04:12:40	Dark	48.000	9	Alp Eri	0.45300	24000.	96	28587	No
40	GOM_TRA_1PNPDE20070819_041812_000000452060_00477_28587_3114.N1	19-AUG-2007 04:18:12	Straylight	45.000	148	Alp Tuc	2.8780	4100.0	90	28587	No
41	GOM_TRA_1PNPDE20070819_042147_000000432060_00477_28587_3115.N1	19-AUG-2007 04:21:47	Straylight	43.000	31	Alp Gru	1.7340	15200.	86	28587	No
42	GOM_TRA_1PNPDE20070819_042444_000000382060_00477_28587_3116.N1	19-AUG-2007 04:24:44	Straylight	37.500	172	Gam Gru	3.0030	13100.	75	28587	No
43	GOM_TRA_1PNPDE20070819_043909_000000372060_00477_28587_3117.N1	19-AUG-2007 04:39:09	Bright	37.000	11	53Alp Aql	0.76500	8000.0	74	28587	No
44	GOM_TRA_1PNPDE20070819_044615_000000392060_00477_28587_3118.N1	19-AUG-2007 04:46:15	Bright	39.000	92	53Eps Cyg	2.5000	4500.0	78	28587	No
45	GOM_TRA_1PNPDE20070819_044753_000000372060_00477_28587_3119.N1	19-AUG-2007 04:47:53	Bright	37.000	66	37Gam Cyg	2.2080	5900.0	74	28587	No
46	GOM_TRA_1PNPDE20070819_044915_000000352060_00477_28587_3120.N1	19-AUG-2007 04:49:15	Bright	35.000	144	18Del Cyg	2.8600	11000.	70	28587	No
47	GOM_TRA_1PNPDE20070819_045446_000000372060_00477_28587_3121.N1	19-AUG-2007 04:54:46	Bright	36.500	89	5Alp Cep	2.4510	8000.0	73	28587	No
48	GOM_TRA_1PNPDE20070819_050156_000000352060_00477_28587_3122.N1	19-AUG-2007 05:01:56	Bright	35.000	49	1Alp UMi	1.9900	6300.0	70	28587	No
49	GOM_TRA_1PNPDE20070819_052051_000000552060_00477_28587_3268.N1	19-AUG-2007 05:20:51	Bright	54.500	170	27Eps Gem	3.0000	9700.0	109	28587	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:	26.5306 %
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:	13.472	20.998	NaN
St. deviation:	4.0260	4.8314	NaN
Maximum:	21.859	29.289	NaN
Minimum:	6.0175	4.3902	NaN
Number of data:	14.000	23.000	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:	-0.0017794	-1.0934	0.080457	-1.3270
St. deviation:	0.47297	1.9561	0.70550	2.0634
Maximum:	18.000	18.200	5.0000	8.0000
Minimum:	-11.300	-10.000	-5.0000	-11.100
Number of data:	12600.	12600.	19000.	19000.

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	19-AUG-2007 00:00:08
CALIBRATION_DATABASE	GOM_CAL_AXVIEC20070814_104912_20070813_000000_20100101_000000	1	19-AUG-2007 00:00:08
LEVEL-1B_PROC_CONFIG	GOM_PR1_AXNIEC20050627_151042_20020301_000000_20100101_000000	1	19-AUG-2007 00:00:08
STAR_CATALOGUE	GOM_CAT_AXVIEC20020121_161009_20020101_000000_20200101_000000	1	19-AUG-2007 00:00:08
STELLAR_SPECTRA_DATABANK	GOM_STS_AXNIEC20040308_103538_20020101_160000_20100101_000000	1	19-AUG-2007 00:00:08
ECMWF_FILE	AUX_ECF_AXNECM20070819_025116_20070818_210000_20070819_090000	1	19-AUG-2007 00:00:08
ECMWF_FILE	AUX_ECF_AXNECM20070819_025112_20070819_030000_20070819_150000	33	19-AUG-2007 03:40:14
OPTIONAL_ECMWF_FILE	MISSING	1	19-AUG-2007 00:00:08
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20070818_210156_000060572060_00472_28582_3996.N1	1	19-AUG-2007 00:00:08
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20070818_224812_000057382060_00473_28583_3997.N1	4	19-AUG-2007 00:30:52
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20070819_020447_000041442060_00475_28585_3999.N1	19	19-AUG-2007 02:11:28
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20070819_031910_000057382060_00476_28586_4000.N1	49	19-AUG-2007 05:20:51

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