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	05AUG2008 10:29:45
Data source version	GOMOS/5.00
Start time of products	02-08-2008 (02AUG2008 00:00:00)
Stop time of products	03-08-2008 (03AUG2008 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
02-AUG-2008 09:50:04	AlpTuc	148	33586

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_1PNPDE20080802_000022_000000372070_00460_33580_0630.N1	02-AUG-2008 00:00:22	Bright	36.500	155	41Pi Sgr	2.9000	6600.0	73	33580	No
2	GOM_TRA_1PNPDE20080802_000841_000000372070_00460_33580_0631.N1	02-AUG-2008 00:08:41	Bright	37.000	11	53Alp Aql	0.76500	8000.0	74	33580	No
3	GOM_TRA_1PNPDE20080802_001009_000000352070_00460_33580_0632.N1	02-AUG-2008 00:10:09	Bright	34.500	168	17Zet Aql	2.9860	11000.	69	33580	No
4	GOM_TRA_1PNPDE20080802_001714_000000362070_00460_33580_0633.N1	02-AUG-2008 00:17:14	Bright	36.000	5	3Alp Lyr	0.033000	11000.	72	33580	No
5	GOM_TRA_1PNPDE20080802_001914_000000342070_00460_33580_0634.N1	02-AUG-2008 00:19:14	Bright	34.000	144	18Del Cyg	2.8600	11000.	68	33580	No
6	GOM_TRA_1PNPDE20080802_002103_000000372070_00460_33580_0635.N1	02-AUG-2008 00:21:03	Bright	37.000	69	33Gam Dra	2.2310	3800.0	74	33580	No
7	GOM_TRA_1PNPDE20080802_003143_000000322070_00460_33580_0636.N1	02-AUG-2008 00:31:43	Bright	32.000	49	1Alp UMi	1.9900	6300.0	64	33580	No
8	GOM_TRA_1PNPDE20080802_004424_000000432070_00460_33580_0637.N1	02-AUG-2008 00:44:24	Bright	43.000	6	13Alp Aur	0.080000	3400.0	86	33580	No
9	GOM_TRA_1PNPDE20080802_004651_000000362070_00460_33580_0638.N1	02-AUG-2008 00:46:51	Bright	35.500	107	37The Aur	2.6490	11000.	71	33580	No
10	GOM_TRA_1PNPDE20080802_004940_000000462070_00460_33580_0639.N1	02-AUG-2008 00:49:40	Bright	45.500	28	12Bet Tau	1.6500	15200.	91	33580	No
11	GOM_TRA_1PNPDE20080802_005146_000000402070_00460_33580_0640.N1	02-AUG-2008 00:51:46	Twi_and_stray	39.500	176	23Zet Tau	3.0200	22000.	79	33580	No
12	GOM_TRA_1PNPDE20080802_005527_000000492070_00460_33580_0641.N1	02-AUG-2008 00:55:27	Dark	48.500	14	58Alp Ori	0.87000	3000.0	97	33580	No
13	GOM_TRA_1PNPDE20080802_005814_000000422070_00460_33580_0642.N1	02-AUG-2008 00:58:14	Dark	41.500	30	46Eps Ori	1.6940	30000.	83	33580	No
14	GOM_TRA_1PNPDE20080802_010044_000000472070_00460_33580_0785.N1	02-AUG-2008 01:00:44	Dark	46.500	7	19Bet Ori	0.10000	14000.	93	33580	Yes
15	GOM_TRA_1PNPDE20080802_010253_000000412070_00460_33580_0786.N1	02-AUG-2008 01:02:53	Dark	41.000	101	11Alp Lep	2.5820	7000.0	82	33580	No
16	GOM_TRA_1PNPDE20080802_010704_000000402070_00460_33580_0787.N1	02-AUG-2008 01:07:04	Dark	40.000	108	Alp Col	2.6520	15200.	80	33580	No
17	GOM_TRA_1PNPDE20080802_012018_000000432070_00461_33581_0788.N1	02-AUG-2008 01:20:18	Dark	42.500	9	Alp Eri	0.45300	24000.	85	33581	No
18	GOM_TRA_1PNPDE20080802_012209_000000362070_00461_33581_0789.N1	02-AUG-2008 01:22:09	Dark	36.000	135	Bet Hyi	2.8200	5800.0	72	33581	No
19	GOM_TRA_1PNPDE20080802_012705_000000412070_00461_33581_0790.N1	02-AUG-2008 01:27:05	Straylight	41.000	148	Alp Tuc	2.8780	4100.0	82	33581	No
20	GOM_TRA_1PNPDE20080802_013027_000000422070_00461_33581_0791.N1	02-AUG-2008 01:30:27	Straylight	42.000	31	Alp Gru	1.7340	15200.	84	33581	No
21	GOM_TRA_1PNPDE20080802_013835_000000422070_00461_33581_0792.N1	02-AUG-2008 01:38:35	Bright	41.500	103	38Zet Sgr	2.6000	9700.0	83	33581	No
22	GOM_TRA_1PNPDE20080802_014058_000000352070_00461_33581_0793.N1	02-AUG-2008 01:40:58	Bright	35.000	155	41Pi Sgr	2.9000	6600.0	70	33581	No
23	GOM_TRA_1PNPDE20080802_014917_000000372070_00461_33581_0794.N1	02-AUG-2008 01:49:17	Bright	37.000	11	53Alp Aql	0.76500	8000.0	74	33581	No
24	GOM_TRA_1PNPDE20080802_015045_000000352070_00461_33581_0795.N1	02-AUG-2008 01:50:45	Bright	35.000	168	17Zet Aql	2.9860	11000.	70	33581	No
25	GOM_TRA_1PNPDE20080802_015750_000000382070_00461_33581_0796.N1	02-AUG-2008 01:57:50	Bright	37.500	5	3Alp Lyr	0.033000	11000.	75	33581	No
26	GOM_TRA_1PNPDE20080802_015950_000000382070_00461_33581_0797.N1	02-AUG-2008 01:59:50	Bright	37.500	144	18Del Cyg	2.8600	11000.	75	33581	No
27	GOM_TRA_1PNPDE20080802_020139_000000332070_00461_33581_0798.N1	02-AUG-2008 02:01:39	Bright	32.500	69	33Gam Dra	2.2310	3800.0	65	33581	No
28	GOM_TRA_1PNPDE20080802_021219_000000352070_00461_33581_0799.N1	02-AUG-2008 02:12:19	Bright	35.000	49	1Alp UMi	1.9900	6300.0	70	33581	No
29	GOM_TRA_1PNPDE20080802_022500_000000412070_00461_33581_0950.N1	02-AUG-2008 02:25:00	Bright	41.000	6	13Alp Aur	0.080000	3400.0	82	33581	No
30	GOM_TRA_1PNPDE20080802_022727_000000352070_00461_33581_0951.N1	02-AUG-2008 02:27:27	Bright	34.500	107	37The Aur	2.6490	11000.	69	33581	No
31	GOM_TRA_1PNPDE20080802_023016_000000442070_00461_33581_0952.N1	02-AUG-2008 02:30:16	Bright	44.000	28	12Bet Tau	1.6500	15200.	88	33581	No
32	GOM_TRA_1PNPDE20080802_023222_000000392070_00461_33581_0953.N1	02-AUG-2008 02:32:22	Twi_and_stray	39.000	176	23Zet Tau	3.0200	22000.	78	33581	No
33	GOM_TRA_1PNPDE20080802_023603_000000522070_00461_33581_0954.N1	02-AUG-2008 02:36:03	Dark	52.000	14	58Alp Ori	0.87000	3000.0	104	33581	No
34	GOM_TRA_1PNPDE20080802_023850_000000412070_00461_33581_0955.N1	02-AUG-2008 02:38:50	Dark	41.000	30	46Eps Ori	1.6940	30000.	82	33581	No
35	GOM_TRA_1PNPDE20080802_024120_000000512070_00461_33581_0956.N1	02-AUG-2008 02:41:20	Dark	50.500	7	19Bet Ori	0.10000	14000.	101	33581	No
36	GOM_TRA_1PNPDE20080802_024330_000000402070_00461_33581_0957.N1	02-AUG-2008 02:43:30	Dark	39.500	101	11Alp Lep	2.5820	7000.0	79	33581	No
37	GOM_TRA_1PNPDE20080802_024741_000000402070_00461_33581_0958.N1	02-AUG-2008 02:47:41	Dark	39.500	108	Alp Col	2.6520	15200.	79	33581	No
38	GOM_TRA_1PNPDE20080802_030055_000000442070_00462_33582_0959.N1	02-AUG-2008 03:00:55	Dark	43.500	9	Alp Eri	0.45300	24000.	87	33582	No
39	GOM_TRA_1PNPDE20080802_030245_000000382070_00462_33582_0960.N1	02-AUG-2008 03:02:45	Dark	37.500	135	Bet Hyi	2.8200	5800.0	75	33582	No
40	GOM_TRA_1PNPDE20080802_030741_000000402070_00462_33582_0961.N1	02-AUG-2008 03:07:41	Straylight	40.000	148	Alp Tuc	2.8780	4100.0	80	33582	No
41	GOM_TRA_1PNPDE20080802_031104_000000432070_00462_33582_0962.N1	02-AUG-2008 03:11:04	Straylight	43.000	31	Alp Gru	1.7340	15200.	86	33582	No
42	GOM_TRA_1PNPDE20080802_031911_000000472070_00462_33582_0963.N1	02-AUG-2008 03:19:11	Bright	47.000	103	38Zet Sgr	2.6000	9700.0	94	33582	No
43	GOM_TRA_1PNPDE20080802_032134_000000362070_00462_33582_0964.N1	02-AUG-2008 03:21:34	Bright	35.500	155	41Pi Sgr	2.9000	6600.0	71	33582	No
44	GOM_TRA_1PNPDE20080802_032953_000000392070_00462_33582_0965.N1	02-AUG-2008 03:29:53	Bright	38.500	11	53Alp Aql	0.76500	8000.0	77	33582	No
45	GOM_TRA_1PNPDE20080802_033121_000000362070_00462_33582_0966.N1	02-AUG-2008 03:31:21	Bright	35.500	168	17Zet Aql	2.9860	11000.	71	33582	No
46	GOM_TRA_1PNPDE20080802_033826_000000392070_00462_33582_0967.N1	02-AUG-2008 03:38:26	Bright	39.000	5	3Alp Lyr	0.033000	11000.	78	33582	No
47	GOM_TRA_1PNPDE20080802_034025_000000362070_00462_33582_0968.N1	02-AUG-2008 03:40:25	Bright	36.000	144	18Del Cyg	2.8600	11000.	72	33582	No
48	GOM_TRA_1PNPDE20080802_034215_000000362070_00462_33582_0969.N1	02-AUG-2008 03:42:15	Bright	35.500	69	33Gam Dra	2.2310	3800.0	71	33582	No
49	GOM_TRA_1PNPDE20080802_035255_000000362070_00462_33582_0970.N1	02-AUG-2008 03:52:55	Bright	35.500	49	1Alp UMi	1.9900	6300.0	71	33582	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 These products did not use the DSA observation for DC computation:

Product name	DC information
GOM_TRA_1PNPDE20080802_000022_000000372070_00460_33580_0630.N1	DC map used
GOM_TRA_1PNPDE20080802_000841_000000372070_00460_33580_0631.N1	DC map used
GOM_TRA_1PNPDE20080802_001009_000000352070_00460_33580_0632.N1	DC map used
GOM_TRA_1PNPDE20080802_001714_000000362070_00460_33580_0633.N1	DC map used
GOM_TRA_1PNPDE20080802_001914_000000342070_00460_33580_0634.N1	DC map used
GOM_TRA_1PNPDE20080802_002103_000000372070_00460_33580_0635.N1	DC map used
GOM_TRA_1PNPDE20080802_003143_000000322070_00460_33580_0636.N1	DC map used
GOM_TRA_1PNPDE20080802_004424_000000432070_00460_33580_0637.N1	DC map used
GOM_TRA_1PNPDE20080802_004651_000000362070_00460_33580_0638.N1	DC map used
GOM_TRA_1PNPDE20080802_004940_000000462070_00460_33580_0639.N1	DC map used
GOM_TRA_1PNPDE20080802_005146_000000402070_00460_33580_0640.N1	DC map used
GOM_TRA_1PNPDE20080802_005527_000000492070_00460_33580_0641.N1	DC map used
GOM_TRA_1PNPDE20080802_005814_000000422070_00460_33580_0642.N1	DC map used

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:	27.0833 %
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:	14.141	19.909	NaN
St. deviation:	4.5674	5.0631	NaN
Maximum:	21.174	29.614	NaN
Minimum:	5.4523	7.2790	NaN
Number of data:	13.000	29.000	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:	0.013441	-1.3054	0.064462	-1.3343
St. deviation:	0.53567	0.64296	0.72533	0.85114
Maximum:	13.000	16.300	6.5000	4.4000
Minimum:	-10.400	-8.3000	-5.2000	-7.3000
Number of data:	11450.	11450.	24100.	24100.

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	02-AUG-2008 00:00:22
CALIBRATION_DATABASE	GOM_CAL_AXVIEC20080801_080250_20080730_000000_20100101_000000	1	02-AUG-2008 00:00:22
LEVEL-1B_PROC_CONFIG	GOM_PR1_AXNIEC20050627_151042_20020301_000000_20100101_000000	1	02-AUG-2008 00:00:22
STAR_CATALOGUE	GOM_CAT_AXVIEC20020121_161009_20020101_000000_20200101_000000	1	02-AUG-2008 00:00:22
STELLAR_SPECTRA_DATABANK	GOM_STS_AXNIEC20040308_103538_20020101_160000_20100101_000000	1	02-AUG-2008 00:00:22
ECMWF_FILE	AUX_ECF_AXNECM20080801_072112_20080801_210000_20080802_090000	1	02-AUG-2008 00:00:22
OPTIONAL_ECMWF_FILE	MISSING	1	02-AUG-2008 00:00:22
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20080801_213911_000057382070_00458_33578_6069.N1	1	02-AUG-2008 00:00:22
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20080801_232008_000057382070_00459_33579_6070.N1	14	02-AUG-2008 01:00:44
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20080802_021528_000054192070_00461_33581_6072.N1	29	02-AUG-2008 02:25:00

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