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	13JUN2008 05:32:29
Data source version	GOMOS/5.00
Start time of products	QDS_YESTERDAY(/START)-1D (11JUN2008 00:00:00)
Stop time of products	QDS_YESTERDAY(/STOP)-1D (12JUN2008 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)

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_1PNPDE20080611_000622_000000422069_00216_32835_7391.N1	11-JUN-2008 00:06:22	Dark	41.500	84	Alp Phe	2.3970	4500.0	83	32835	No
2	GOM_TRA_1PNPDE20080611_001222_000000512069_00217_32836_7392.N1	11-JUN-2008 00:12:22	Dark	51.000	63	Bet Gru	2.1500	2800.0	102	32836	No
3	GOM_TRA_1PNPDE20080611_001423_000000482069_00217_32836_7393.N1	11-JUN-2008 00:14:23	Dark	47.500	31	Alp Gru	1.7340	15200.	95	32836	No
4	GOM_TRA_1PNPDE20080611_001554_000000562069_00217_32836_7394.N1	11-JUN-2008 00:15:54	Straylight	56.000	172	Gam Gru	3.0030	13100.	112	32836	No
5	GOM_TRA_1PNPDE20080611_001837_000000412069_00217_32836_7395.N1	11-JUN-2008 00:18:37	Straylight	40.500	45	Alp Pav	1.9400	26000.	81	32836	No
6	GOM_TRA_1PNPDE20080611_002705_000000432069_00217_32836_7396.N1	11-JUN-2008 00:27:05	Straylight	43.000	40	The Sco	1.8590	7100.0	86	32836	No
7	GOM_TRA_1PNPDE20080611_002850_000000432069_00217_32836_7397.N1	11-JUN-2008 00:28:50	Twi_and_stray	43.000	25	35Lam Sco	1.6200	28000.	86	32836	No
8	GOM_TRA_1PNPDE20080611_003029_000000742069_00217_32836_7398.N1	11-JUN-2008 00:30:29	Bright	73.500	57	34Sig Sgr	2.0660	26000.	147	32836	No
9	GOM_TRA_1PNPDE20080611_003537_000000412069_00217_32836_7399.N1	11-JUN-2008 00:35:37	Bright	40.500	86	35Eta Oph	2.4300	10200.	81	32836	No
10	GOM_TRA_1PNPDE20080611_003723_000000382069_00217_32836_7400.N1	11-JUN-2008 00:37:23	Bright	38.000	98	13Zet Oph	2.5710	30000.	76	32836	No
11	GOM_TRA_1PNPDE20080611_004237_000000462069_00217_32836_7401.N1	11-JUN-2008 00:42:37	Bright	46.000	126	60Bet Oph	2.7700	4250.0	92	32836	No
12	GOM_TRA_1PNPDE20080611_004514_000000472069_00217_32836_7402.N1	11-JUN-2008 00:45:14	Bright	47.000	59	55Alp Oph	2.0800	8900.0	94	32836	No
13	GOM_TRA_1PNPDE20080611_004656_000000362069_00217_32836_7403.N1	11-JUN-2008 00:46:56	Bright	36.000	127	27Bet Her	2.7810	4700.0	72	32836	No
14	GOM_TRA_1PNPDE20080611_005005_000000402069_00217_32836_7404.N1	11-JUN-2008 00:50:05	Bright	40.000	133	40Zet Her	2.8070	6000.0	80	32836	No
15	GOM_TRA_1PNPDE20080611_005707_000000392069_00217_32836_7405.N1	11-JUN-2008 00:57:07	Bright	39.000	130	23Bet Dra	2.7990	5800.0	78	32836	No
16	GOM_TRA_1PNPDE20080611_010747_000000462069_00217_32836_7406.N1	11-JUN-2008 01:07:47	Bright	46.000	89	5Alp Cep	2.4510	8000.0	92	32836	No
17	GOM_TRA_1PNPDE20080611_011401_000000372069_00217_32836_7407.N1	11-JUN-2008 01:14:01	Bright	37.000	76	27Gam Cas	2.3000	30000.	74	32836	No
18	GOM_TRA_1PNPDE20080611_011958_000000392069_00217_32836_7408.N1	11-JUN-2008 01:19:58	Bright	38.500	73	57Gam1And	2.2600	13100.	77	32836	No
19	GOM_TRA_1PNPDE20080611_012218_000000552069_00217_32836_7409.N1	11-JUN-2008 01:22:18	Twi_and_stray	54.500	53	43Bet And	2.0480	3300.0	109	32836	No
20	GOM_TRA_1PNPDE20080611_012538_000000472069_00217_32836_7410.N1	11-JUN-2008 01:25:38	Twilight	47.000	50	13Alp Ari	2.0070	4250.0	94	32836	No
21	GOM_TRA_1PNPDE20080611_014033_000000522069_00217_32836_7462.N1	11-JUN-2008 01:40:33	Dark	51.500	52	16Bet Cet	2.0370	4500.0	103	32836	No
22	GOM_TRA_1PNPDE20080611_014659_000000442069_00217_32836_7463.N1	11-JUN-2008 01:46:59	Dark	43.500	84	Alp Phe	2.3970	4500.0	87	32836	No
23	GOM_TRA_1PNPDE20080611_015258_000000502069_00218_32837_7464.N1	11-JUN-2008 01:52:58	Dark	50.000	63	Bet Gru	2.1500	2800.0	100	32837	No
24	GOM_TRA_1PNPDE20080611_015500_000000512069_00218_32837_7465.N1	11-JUN-2008 01:55:00	Dark	51.000	31	Alp Gru	1.7340	15200.	102	32837	No
25	GOM_TRA_1PNPDE20080611_015632_000000582069_00218_32837_7466.N1	11-JUN-2008 01:56:32	Straylight	58.000	172	Gam Gru	3.0030	13100.	116	32837	No
26	GOM_TRA_1PNPDE20080611_015913_000000422069_00218_32837_7467.N1	11-JUN-2008 01:59:13	Straylight	41.500	45	Alp Pav	1.9400	26000.	83	32837	No
27	GOM_TRA_1PNPDE20080611_020744_000000462069_00218_32837_7468.N1	11-JUN-2008 02:07:44	Straylight	45.500	40	The Sco	1.8590	7100.0	91	32837	No
28	GOM_TRA_1PNPDE20080611_020926_000000432069_00218_32837_7469.N1	11-JUN-2008 02:09:26	Twi_and_stray	43.000	25	35Lam Sco	1.6200	28000.	86	32837	No
29	GOM_TRA_1PNPDE20080611_021106_000000692069_00218_32837_7470.N1	11-JUN-2008 02:11:06	Bright	68.500	57	34Sig Sgr	2.0660	26000.	137	32837	No
30	GOM_TRA_1PNPDE20080611_021614_000000402069_00218_32837_7471.N1	11-JUN-2008 02:16:14	Bright	40.000	86	35Eta Oph	2.4300	10200.	80	32837	No
31	GOM_TRA_1PNPDE20080611_021759_000000382069_00218_32837_7472.N1	11-JUN-2008 02:17:59	Bright	38.000	98	13Zet Oph	2.5710	30000.	76	32837	No
32	GOM_TRA_1PNPDE20080611_022313_000000462069_00218_32837_7473.N1	11-JUN-2008 02:23:13	Bright	46.000	126	60Bet Oph	2.7700	4250.0	92	32837	No
33	GOM_TRA_1PNPDE20080611_022549_000000462069_00218_32837_7474.N1	11-JUN-2008 02:25:49	Bright	46.000	59	55Alp Oph	2.0800	8900.0	92	32837	No
34	GOM_TRA_1PNPDE20080611_022732_000000392069_00218_32837_7475.N1	11-JUN-2008 02:27:32	Bright	38.500	127	27Bet Her	2.7810	4700.0	77	32837	No
35	GOM_TRA_1PNPDE20080611_023040_000000402069_00218_32837_7476.N1	11-JUN-2008 02:30:40	Bright	39.500	133	40Zet Her	2.8070	6000.0	79	32837	No
36	GOM_TRA_1PNPDE20080611_023742_000000402069_00218_32837_7477.N1	11-JUN-2008 02:37:42	Bright	39.500	130	23Bet Dra	2.7990	5800.0	79	32837	No
37	GOM_TRA_1PNPDE20080611_024823_000000472069_00218_32837_7478.N1	11-JUN-2008 02:48:23	Bright	47.000	89	5Alp Cep	2.4510	8000.0	94	32837	No
38	GOM_TRA_1PNPDE20080611_025436_000000582069_00218_32837_7552.N1	11-JUN-2008 02:54:36	Bright	58.000	76	27Gam Cas	2.3000	30000.	116	32837	No
39	GOM_TRA_1PNPDE20080611_030034_000000392069_00218_32837_7553.N1	11-JUN-2008 03:00:34	Bright	38.500	73	57Gam1And	2.2600	13100.	77	32837	No
40	GOM_TRA_1PNPDE20080611_030254_000000572069_00218_32837_7554.N1	11-JUN-2008 03:02:54	Twi_and_stray	56.500	53	43Bet And	2.0480	3300.0	113	32837	No
41	GOM_TRA_1PNPDE20080611_030614_000000472069_00218_32837_7555.N1	11-JUN-2008 03:06:14	Twilight	47.000	50	13Alp Ari	2.0070	4250.0	94	32837	No
42	GOM_TRA_1PNPDE20080611_032109_000000512069_00218_32837_7556.N1	11-JUN-2008 03:21:09	Dark	51.000	52	16Bet Cet	2.0370	4500.0	102	32837	No
43	GOM_TRA_1PNPDE20080611_032735_000000462069_00218_32837_7557.N1	11-JUN-2008 03:27:35	Dark	45.500	84	Alp Phe	2.3970	4500.0	91	32837	No
44	GOM_TRA_1PNPDE20080611_033335_000000512069_00219_32838_7558.N1	11-JUN-2008 03:33:35	Dark	50.500	63	Bet Gru	2.1500	2800.0	101	32838	No
45	GOM_TRA_1PNPDE20080611_033537_000000492069_00219_32838_7559.N1	11-JUN-2008 03:35:37	Dark	48.500	31	Alp Gru	1.7340	15200.	97	32838	No
46	GOM_TRA_1PNPDE20080611_033709_000000562069_00219_32838_7560.N1	11-JUN-2008 03:37:09	Straylight	56.000	172	Gam Gru	3.0030	13100.	112	32838	No
47	GOM_TRA_1PNPDE20080611_033950_000000452069_00219_32838_7561.N1	11-JUN-2008 03:39:50	Straylight	45.000	45	Alp Pav	1.9400	26000.	90	32838	No
48	GOM_TRA_1PNPDE20080611_035002_000000412069_00219_32838_7562.N1	11-JUN-2008 03:50:02	Twi_and_stray	40.500	25	35Lam Sco	1.6200	28000.	81	32838	No
49	GOM_TRA_1PNPDE20080611_035142_000000562069_00219_32838_7563.N1	11-JUN-2008 03:51:42	Bright	56.000	57	34Sig Sgr	2.0660	26000.	112	32838	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:	28.5714 %
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:	15.649	18.992	10.270
St. deviation:	2.2309	5.8975	0.079359
Maximum:	19.142	26.168	10.326
Minimum:	13.347	3.6892	10.214
Number of data:	11.000	23.000	2.0000

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:	0.23897	-1.2580	0.30611	-1.1853
St. deviation:	0.36603	0.72158	0.82057	1.3046
Maximum:	9.2000	4.0000	5.1000	4.1000
Minimum:	-3.5000	-4.9000	-3.8000	-6.7000
Number of data:	11900.	11900.	22650.	22650.

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	11-JUN-2008 00:06:22
CALIBRATION_DATABASE	GOM_CAL_AXVIEC20080609_083139_20080607_000000_20100101_000000	1	11-JUN-2008 00:06:22
LEVEL-1B_PROC_CONFIG	GOM_PR1_AXNIEC20050627_151042_20020301_000000_20100101_000000	1	11-JUN-2008 00:06:22
STAR_CATALOGUE	GOM_CAT_AXVIEC20020121_161009_20020101_000000_20200101_000000	1	11-JUN-2008 00:06:22
STELLAR_SPECTRA_DATABANK	GOM_STS_AXNIEC20040308_103538_20020101_160000_20100101_000000	1	11-JUN-2008 00:06:22
ECMWF_FILE	AUX_ECF_AXNECM20080610_072114_20080610_210000_20080611_090000	1	11-JUN-2008 00:06:22
OPTIONAL_ECMWF_FILE	MISSING	1	11-JUN-2008 00:06:22
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20080610_221214_000057382069_00215_32834_5711.N1	1	11-JUN-2008 00:06:22
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20080610_235311_000057382069_00216_32835_5712.N1	21	11-JUN-2008 01:40:33
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20080611_013408_000044632069_00217_32836_5713.N1	38	11-JUN-2008 02:54:36

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