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	25JUL2008 05:32:09
Data source version	GOMOS/5.00
Start time of products	QDS_YESTERDAY(/START)-1D (23JUL2008 00:00:00)
Stop time of products	QDS_YESTERDAY(/STOP)-1D (24JUL2008 00:00:00)
Store outputs in DB	Yes
Nb of level 1b prods	49
Nb of prods with errors	1

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
23-JUL-2008 01:27:03	The1Eri	157	33437
23-JUL-2008 14:10:52	1AlpUMi	49	33445

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_1PNPDE20080723_000320_000000412070_00317_33437_6193.N1	23-JUL-2008 00:03:20	Straylight	40.500	45	Alp Pav	1.9400	26000.	81	33437	No
2	GOM_TRA_1PNPDE20080723_001156_000000442070_00317_33437_6194.N1	23-JUL-2008 00:11:56	Bright	44.000	103	38Zet Sgr	2.6000	9700.0	88	33437	No
3	GOM_TRA_1PNPDE20080723_001421_000000382070_00317_33437_6195.N1	23-JUL-2008 00:14:21	Bright	38.000	155	41Pi Sgr	2.9000	6600.0	76	33437	No
4	GOM_TRA_1PNPDE20080723_002431_000000372070_00317_33437_6196.N1	23-JUL-2008 00:24:31	Bright	37.000	168	17Zet Aql	2.9860	11000.	74	33437	No
5	GOM_TRA_1PNPDE20080723_003134_000000352070_00317_33437_6197.N1	23-JUL-2008 00:31:34	Bright	35.000	5	3Alp Lyr	0.033000	11000.	70	33437	No
6	GOM_TRA_1PNPDE20080723_003509_000000382070_00317_33437_6198.N1	23-JUL-2008 00:35:09	Bright	38.000	69	33Gam Dra	2.2310	3800.0	76	33437	No
7	GOM_TRA_1PNPDE20080723_004608_000000362070_00317_33437_6199.N1	23-JUL-2008 00:46:08	Bright	35.500	49	1Alp UMi	1.9900	6300.0	71	33437	No
8	GOM_TRA_1PNPDE20080723_005841_000000392070_00317_33437_6200.N1	23-JUL-2008 00:58:41	Bright	39.000	6	13Alp Aur	0.080000	3400.0	78	33437	No
9	GOM_TRA_1PNPDE20080723_010235_000000532070_00317_33437_6201.N1	23-JUL-2008 01:02:35	Bright	53.000	114	3Iot Aur	2.6930	4600.0	106	33437	No
10	GOM_TRA_1PNPDE20080723_010752_000000522070_00317_33437_6202.N1	23-JUL-2008 01:07:52	Dark	52.000	13	87Alp Tau	0.86700	3800.0	104	33437	No
11	GOM_TRA_1PNPDE20080723_010958_000000362070_00317_33437_6203.N1	23-JUL-2008 01:09:58	Dark	36.000	27	24Gam Ori	1.6360	26000.	72	33437	No
12	GOM_TRA_1PNPDE20080723_011154_000000392070_00317_33437_6204.N1	23-JUL-2008 01:11:54	Dark	38.500	30	46Eps Ori	1.6940	30000.	77	33437	No
13	GOM_TRA_1PNPDE20080723_011411_000000412070_00317_33437_6205.N1	23-JUL-2008 01:14:11	Dark	40.500	7	19Bet Ori	0.10000	14000.	81	33437	No
14	GOM_TRA_1PNPDE20080723_011631_000000342070_00317_33437_6327.N1	23-JUL-2008 01:16:31	Dark	34.000	101	11Alp Lep	2.5820	7000.0	68	33437	Yes
15	GOM_TRA_1PNPDE20080723_013304_000000482070_00318_33438_6328.N1	23-JUL-2008 01:33:04	Dark	47.500	9	Alp Eri	0.45300	24000.	95	33438	No
16	GOM_TRA_1PNPDE20080723_013555_000000372070_00318_33438_6329.N1	23-JUL-2008 01:35:55	Dark	37.000	135	Bet Hyi	2.8200	5800.0	74	33438	No
17	GOM_TRA_1PNPDE20080723_014022_000000422070_00318_33438_6330.N1	23-JUL-2008 01:40:22	Straylight	41.500	148	Alp Tuc	2.8780	4100.0	83	33438	No
18	GOM_TRA_1PNPDE20080723_014356_000000402070_00318_33438_6331.N1	23-JUL-2008 01:43:56	Straylight	40.000	45	Alp Pav	1.9400	26000.	80	33438	No
19	GOM_TRA_1PNPDE20080723_015232_000000422070_00318_33438_6332.N1	23-JUL-2008 01:52:32	Bright	41.500	103	38Zet Sgr	2.6000	9700.0	83	33438	No
20	GOM_TRA_1PNPDE20080723_015457_000000382070_00318_33438_6333.N1	23-JUL-2008 01:54:57	Bright	37.500	155	41Pi Sgr	2.9000	6600.0	75	33438	No
21	GOM_TRA_1PNPDE20080723_020507_000000162070_00318_33438_6334.N1	23-JUL-2008 02:05:07	Twi_and_stray	16.000	168	17Zet Aql	2.9860	11000.	32	33438	No
22	GOM_TRA_1PNPDE20080723_021210_000000412070_00318_33438_6335.N1	23-JUL-2008 02:12:10	Bright	40.500	5	3Alp Lyr	0.033000	11000.	81	33438	No
23	GOM_TRA_1PNPDE20080723_021545_000000332070_00318_33438_6336.N1	23-JUL-2008 02:15:45	Bright	32.500	69	33Gam Dra	2.2310	3800.0	65	33438	No
24	GOM_TRA_1PNPDE20080723_022644_000000362070_00318_33438_6337.N1	23-JUL-2008 02:26:44	Bright	35.500	49	1Alp UMi	1.9900	6300.0	71	33438	No
25	GOM_TRA_1PNPDE20080723_023917_000000402070_00318_33438_6502.N1	23-JUL-2008 02:39:17	Bright	39.500	6	13Alp Aur	0.080000	3400.0	79	33438	No
26	GOM_TRA_1PNPDE20080723_024311_000000392070_00318_33438_6503.N1	23-JUL-2008 02:43:11	Bright	39.000	114	3Iot Aur	2.6930	4600.0	78	33438	No
27	GOM_TRA_1PNPDE20080723_024828_000000522070_00318_33438_6504.N1	23-JUL-2008 02:48:28	Dark	51.500	13	87Alp Tau	0.86700	3800.0	103	33438	No
28	GOM_TRA_1PNPDE20080723_025034_000000382070_00318_33438_6505.N1	23-JUL-2008 02:50:34	Dark	37.500	27	24Gam Ori	1.6360	26000.	75	33438	No
29	GOM_TRA_1PNPDE20080723_025230_000000392070_00318_33438_6506.N1	23-JUL-2008 02:52:30	Dark	38.500	30	46Eps Ori	1.6940	30000.	77	33438	No
30	GOM_TRA_1PNPDE20080723_025447_000000342070_00318_33438_6507.N1	23-JUL-2008 02:54:47	Dark	34.000	7	19Bet Ori	0.10000	14000.	68	33438	No
31	GOM_TRA_1PNPDE20080723_025707_000000332070_00318_33438_6508.N1	23-JUL-2008 02:57:07	Dark	33.000	101	11Alp Lep	2.5820	7000.0	66	33438	No
32	GOM_TRA_1PNPDE20080723_030743_000000442070_00318_33438_6509.N1	23-JUL-2008 03:07:43	Dark	43.500	157	The1Eri	2.9060	9300.0	87	33438	No
33	GOM_TRA_1PNPDE20080723_031341_000000452070_00319_33439_6510.N1	23-JUL-2008 03:13:41	Dark	45.000	9	Alp Eri	0.45300	24000.	90	33439	No
34	GOM_TRA_1PNPDE20080723_031631_000000372070_00319_33439_6511.N1	23-JUL-2008 03:16:31	Dark	37.000	135	Bet Hyi	2.8200	5800.0	74	33439	No
35	GOM_TRA_1PNPDE20080723_032058_000000402070_00319_33439_6512.N1	23-JUL-2008 03:20:58	Straylight	39.500	148	Alp Tuc	2.8780	4100.0	79	33439	No
36	GOM_TRA_1PNPDE20080723_032433_000000422070_00319_33439_6513.N1	23-JUL-2008 03:24:33	Straylight	41.500	45	Alp Pav	1.9400	26000.	83	33439	No
37	GOM_TRA_1PNPDE20080723_033308_000000402070_00319_33439_6514.N1	23-JUL-2008 03:33:08	Bright	39.500	103	38Zet Sgr	2.6000	9700.0	79	33439	No
38	GOM_TRA_1PNPDE20080723_033533_000000382070_00319_33439_6515.N1	23-JUL-2008 03:35:33	Bright	37.500	155	41Pi Sgr	2.9000	6600.0	75	33439	No
39	GOM_TRA_1PNPDE20080723_034543_000000372070_00319_33439_6516.N1	23-JUL-2008 03:45:43	Bright	37.000	168	17Zet Aql	2.9860	11000.	74	33439	No
40	GOM_TRA_1PNPDE20080723_035246_000000392070_00319_33439_6517.N1	23-JUL-2008 03:52:46	Bright	39.000	5	3Alp Lyr	0.033000	11000.	78	33439	No
41	GOM_TRA_1PNPDE20080723_035621_000000342070_00319_33439_6518.N1	23-JUL-2008 03:56:21	Bright	34.000	69	33Gam Dra	2.2310	3800.0	68	33439	No
42	GOM_TRA_1PNPDE20080723_040720_000000352070_00319_33439_6519.N1	23-JUL-2008 04:07:20	Bright	35.000	49	1Alp UMi	1.9900	6300.0	70	33439	No
43	GOM_TRA_1PNPDE20080723_041953_000000382070_00319_33439_6667.N1	23-JUL-2008 04:19:53	Bright	38.000	6	13Alp Aur	0.080000	3400.0	76	33439	No
44	GOM_TRA_1PNPDE20080723_042347_000000412070_00319_33439_6668.N1	23-JUL-2008 04:23:47	Bright	40.500	114	3Iot Aur	2.6930	4600.0	81	33439	No
45	GOM_TRA_1PNPDE20080723_042905_000000442070_00319_33439_6669.N1	23-JUL-2008 04:29:05	Dark	44.000	13	87Alp Tau	0.86700	3800.0	88	33439	No
46	GOM_TRA_1PNPDE20080723_043111_000000402070_00319_33439_6670.N1	23-JUL-2008 04:31:11	Dark	39.500	27	24Gam Ori	1.6360	26000.	79	33439	No
47	GOM_TRA_1PNPDE20080723_043306_000000342070_00319_33439_6671.N1	23-JUL-2008 04:33:06	Dark	33.500	30	46Eps Ori	1.6940	30000.	67	33439	No
48	GOM_TRA_1PNPDE20080723_043524_000000342070_00319_33439_6672.N1	23-JUL-2008 04:35:24	Dark	34.000	7	19Bet Ori	0.10000	14000.	68	33439	No
49	GOM_TRA_1PNPDE20080723_043743_000000362070_00319_33439_6673.N1	23-JUL-2008 04:37:43	Dark	35.500	101	11Alp Lep	2.5820	7000.0	71	33439	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:	16.6667 %
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:	17.525	18.117	NaN
St. deviation:	5.4916	4.7242	NaN
Maximum:	25.912	27.993	NaN
Minimum:	7.6601	5.3287	NaN
Number of data:	19.000	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:	0.029059	-1.3590	0.092500	-1.3749
St. deviation:	0.42241	0.56326	0.58957	0.72073
Maximum:	3.6000	2.2000	6.1000	5.1000
Minimum:	-3.2000	-5.6000	-5.8000	-6.5000
Number of data:	16750.	16750.	18950.	18950.

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	23-JUL-2008 00:03:20
CALIBRATION_DATABASE	GOM_CAL_AXVIEC20080711_132227_20080708_000000_20100101_000000	1	23-JUL-2008 00:03:20
LEVEL-1B_PROC_CONFIG	GOM_PR1_AXNIEC20050627_151042_20020301_000000_20100101_000000	1	23-JUL-2008 00:03:20
STAR_CATALOGUE	GOM_CAT_AXVIEC20020121_161009_20020101_000000_20200101_000000	1	23-JUL-2008 00:03:20
STELLAR_SPECTRA_DATABANK	GOM_STS_AXNIEC20040308_103538_20020101_160000_20100101_000000	1	23-JUL-2008 00:03:20
ECMWF_FILE	AUX_ECF_AXNECM20080722_072113_20080722_210000_20080723_090000	1	23-JUL-2008 00:03:20
ECMWF_FILE	AUX_ECF_AXNECM20080722_190113_20080723_030000_20080723_150000	43	23-JUL-2008 04:19:53
OPTIONAL_ECMWF_FILE	MISSING	1	23-JUL-2008 00:03:20
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20080722_215103_000060572070_00315_33435_6002.N1	1	23-JUL-2008 00:03:20
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20080722_233200_000057382070_00316_33436_6003.N1	14	23-JUL-2008 01:16:31
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20080723_011257_000044632070_00317_33437_6004.N1	25	23-JUL-2008 02:39:17
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20080723_023239_000054192070_00318_33438_6005.N1	43	23-JUL-2008 04:19:53

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