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	13DEC2006 15:20:12
Data source version	GOMOS/5.00
Start time of products	03-12-2006 (03DEC2006 00:00:00)
Stop time of products	04-12-2006 (04DEC2006 00:00:00)
Store outputs in DB	Yes
Nb of level 1b prods	49
Nb of prods with errors	11

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
03-DEC-2006 01:16:56	IotCen	123	24877
03-DEC-2006 02:35:36	27GamBoo	180	24878

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_1PNPDE20061203_001056_000000392053_00274_24877_6144.N1	03-DEC-2006 00:10:56	Straylight	38.500	165	34Gam Eri	2.9500	3200.0	77	24877	No
2	GOM_TRA_1PNPDE20061203_001617_000000382053_00274_24877_6145.N1	03-DEC-2006 00:16:17	Twi_and_stray	37.500	94	92Alp Cet	2.5260	3100.0	75	24877	No
3	GOM_TRA_1PNPDE20061203_002159_000000322053_00274_24877_6146.N1	03-DEC-2006 00:21:59	Bright	32.000	146	25Eta Tau	2.8730	15200.	64	24877	Yes
4	GOM_TRA_1PNPDE20061203_002419_000000312053_00274_24877_6147.N1	03-DEC-2006 00:24:19	Bright	31.000	150	44Zet Per	2.8900	28000.	62	24877	No
5	GOM_TRA_1PNPDE20061203_002638_000000302053_00274_24877_6148.N1	03-DEC-2006 00:26:38	Bright	29.500	79	26Bet Per	2.3100	13100.	59	24877	Yes
6	GOM_TRA_1PNPDE20061203_002847_000000302053_00274_24877_6149.N1	03-DEC-2006 00:28:47	Bright	30.000	175	39Del Per	3.0100	19400.	60	24877	Yes
7	GOM_TRA_1PNPDE20061203_003011_000000292053_00274_24877_6150.N1	03-DEC-2006 00:30:11	Bright	29.000	160	23Gam Per	2.9300	4700.0	58	24877	Yes
8	GOM_TRA_1PNPDE20061203_004016_000000282053_00274_24877_6151.N1	03-DEC-2006 00:40:16	Bright	27.500	49	1Alp UMi	1.9900	6300.0	55	24877	Yes
9	GOM_TRA_1PNPDE20061203_004456_000000462053_00274_24877_6152.N1	03-DEC-2006 00:44:56	Bright	46.000	60	7Bet UMi	2.0810	3950.0	92	24877	Yes
10	GOM_TRA_1PNPDE20061203_005006_000000342053_00274_24877_6153.N1	03-DEC-2006 00:50:06	Bright	33.500	32	77Eps UMa	1.7630	11000.	67	24877	No
11	GOM_TRA_1PNPDE20061203_005213_000000302053_00274_24877_6154.N1	03-DEC-2006 00:52:13	Bright	29.500	39	85Eta UMa	1.8540	24000.	59	24877	Yes
12	GOM_TRA_1PNPDE20061203_005510_000000292053_00274_24877_6155.N1	03-DEC-2006 00:55:10	Bright	28.500	180	27Gam Boo	3.0400	8000.0	57	24877	No
13	GOM_TRA_1PNPDE20061203_010044_000000292053_00274_24877_6156.N1	03-DEC-2006 01:00:44	Bright	28.500	3	16Alp Boo	-0.050000	4250.0	57	24877	No
14	GOM_TRA_1PNPDE20061203_010424_000000352053_00274_24877_6157.N1	03-DEC-2006 01:04:24	Bright	34.500	138	47Eps Vir	2.8280	4700.0	69	24877	No
15	GOM_TRA_1PNPDE20061203_011012_000000352053_00274_24877_6362.N1	03-DEC-2006 01:10:12	Bright	34.500	15	67Alp Vir	0.97600	28000.	69	24877	No
16	GOM_TRA_1PNPDE20061203_011337_000000382053_00274_24877_6363.N1	03-DEC-2006 01:13:37	Twi_and_stray	37.500	169	46Gam Hya	2.9910	4700.0	75	24877	No
17	GOM_TRA_1PNPDE20061203_011514_000000382053_00274_24877_6364.N1	03-DEC-2006 01:15:14	Dark	38.000	106	9Bet Crv	2.6480	5600.0	76	24877	No
18	GOM_TRA_1PNPDE20061203_012315_000000472053_00274_24877_6365.N1	03-DEC-2006 01:23:15	Dark	47.000	26	Gam Cru	1.6240	2900.0	94	24877	No
19	GOM_TRA_1PNPDE20061203_012538_000000382053_00275_24878_6366.N1	03-DEC-2006 01:25:38	Dark	37.500	113	Mu Vel	2.6920	5000.0	75	24878	No
20	GOM_TRA_1PNPDE20061203_012727_000000322053_00275_24878_6367.N1	03-DEC-2006 01:27:27	Dark	32.000	124	The Car	2.7640	30000.	64	24878	No
21	GOM_TRA_1PNPDE20061203_013012_000000332053_00275_24878_6368.N1	03-DEC-2006 01:30:12	Dark	32.500	29	Bet Car	1.6720	10200.	65	24878	No
22	GOM_TRA_1PNPDE20061203_013211_000000362053_00275_24878_6369.N1	03-DEC-2006 01:32:11	Dark	36.000	41	Eps Car	1.8600	4100.0	72	24878	No
23	GOM_TRA_1PNPDE20061203_013730_000000422053_00275_24878_6370.N1	03-DEC-2006 01:37:30	Dark	41.500	2	Alp Car	-0.73600	7000.0	83	24878	No
24	GOM_TRA_1PNPDE20061203_015132_000000392053_00275_24878_6371.N1	03-DEC-2006 01:51:32	Straylight	38.500	165	34Gam Eri	2.9500	3200.0	77	24878	No
25	GOM_TRA_1PNPDE20061203_015653_000000422053_00275_24878_6372.N1	03-DEC-2006 01:56:53	Twi_and_stray	42.000	94	92Alp Cet	2.5260	3100.0	84	24878	No
26	GOM_TRA_1PNPDE20061203_020235_000000312053_00275_24878_6373.N1	03-DEC-2006 02:02:35	Bright	31.000	146	25Eta Tau	2.8730	15200.	62	24878	No
27	GOM_TRA_1PNPDE20061203_020455_000000332053_00275_24878_6374.N1	03-DEC-2006 02:04:55	Bright	32.500	150	44Zet Per	2.8900	28000.	65	24878	No
28	GOM_TRA_1PNPDE20061203_020714_000000322053_00275_24878_6375.N1	03-DEC-2006 02:07:14	Bright	31.500	79	26Bet Per	2.3100	13100.	63	24878	Yes
29	GOM_TRA_1PNPDE20061203_020923_000000312053_00275_24878_6376.N1	03-DEC-2006 02:09:23	Bright	30.500	175	39Del Per	3.0100	19400.	61	24878	No
30	GOM_TRA_1PNPDE20061203_021046_000000292053_00275_24878_6377.N1	03-DEC-2006 02:10:46	Bright	29.000	160	23Gam Per	2.9300	4700.0	58	24878	Yes
31	GOM_TRA_1PNPDE20061203_022051_000000282053_00275_24878_6378.N1	03-DEC-2006 02:20:51	Bright	28.000	49	1Alp UMi	1.9900	6300.0	56	24878	Yes
32	GOM_TRA_1PNPDE20061203_022532_000000312053_00275_24878_6673.N1	03-DEC-2006 02:25:32	Bright	31.000	60	7Bet UMi	2.0810	3950.0	62	24878	No
33	GOM_TRA_1PNPDE20061203_023042_000000332053_00275_24878_6674.N1	03-DEC-2006 02:30:42	Bright	33.000	32	77Eps UMa	1.7630	11000.	66	24878	No
34	GOM_TRA_1PNPDE20061203_023249_000000322053_00275_24878_6675.N1	03-DEC-2006 02:32:49	Bright	32.000	39	85Eta UMa	1.8540	24000.	64	24878	Yes
35	GOM_TRA_1PNPDE20061203_024120_000000292053_00275_24878_6676.N1	03-DEC-2006 02:41:20	Bright	28.500	3	16Alp Boo	-0.050000	4250.0	57	24878	No
36	GOM_TRA_1PNPDE20061203_024500_000000362053_00275_24878_6677.N1	03-DEC-2006 02:45:00	Bright	36.000	138	47Eps Vir	2.8280	4700.0	72	24878	No
37	GOM_TRA_1PNPDE20061203_025048_000000372053_00275_24878_6678.N1	03-DEC-2006 02:50:48	Bright	36.500	15	67Alp Vir	0.97600	28000.	73	24878	No
38	GOM_TRA_1PNPDE20061203_025413_000000342053_00275_24878_6679.N1	03-DEC-2006 02:54:13	Twi_and_stray	34.000	169	46Gam Hya	2.9910	4700.0	68	24878	No
39	GOM_TRA_1PNPDE20061203_025551_000000422053_00275_24878_6680.N1	03-DEC-2006 02:55:51	Dark	42.000	106	9Bet Crv	2.6480	5600.0	84	24878	No
40	GOM_TRA_1PNPDE20061203_025742_000000342053_00275_24878_6681.N1	03-DEC-2006 02:57:42	Dark	34.000	123	Iot Cen	2.7500	10200.	68	24878	No
41	GOM_TRA_1PNPDE20061203_030351_000000342053_00275_24878_6682.N1	03-DEC-2006 03:03:51	Dark	33.500	26	Gam Cru	1.6240	2900.0	67	24878	No
42	GOM_TRA_1PNPDE20061203_044652_000000372053_00277_24880_6877.N1	03-DEC-2006 04:46:52	Dark	36.500	113	Mu Vel	2.6920	5000.0	73	24880	No
43	GOM_TRA_1PNPDE20061203_045532_000000422053_00277_24880_6878.N1	03-DEC-2006 04:55:32	Dark	41.500	34	Gam2Vel	1.7930	23000.	83	24880	No
44	GOM_TRA_1PNPDE20061203_045843_000000462053_00277_24880_6879.N1	03-DEC-2006 04:58:43	Dark	45.500	2	Alp Car	-0.73600	7000.0	91	24880	No
45	GOM_TRA_1PNPDE20061203_050046_000000512053_00277_24880_6880.N1	03-DEC-2006 05:00:46	Dark	51.000	117	Pi Pup	2.7060	3800.0	102	24880	No
46	GOM_TRA_1PNPDE20061203_050506_000000402053_00277_24880_6881.N1	03-DEC-2006 05:05:06	Dark	39.500	108	Alp Col	2.6520	15200.	79	24880	No
47	GOM_TRA_1PNPDE20061203_051043_000000462053_00277_24880_6882.N1	03-DEC-2006 05:10:43	Straylight	45.500	101	11Alp Lep	2.5820	7000.0	91	24880	No
48	GOM_TRA_1PNPDE20061203_051413_000000572053_00277_24880_6883.N1	03-DEC-2006 05:14:13	Straylight	56.500	7	19Bet Ori	0.10000	14000.	113	24880	No
49	GOM_TRA_1PNPDE20061203_052206_000000542053_00277_24880_6884.N1	03-DEC-2006 05:22:06	Bright	53.500	13	87Alp Tau	0.86700	3800.0	107	24880	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:	23.6842 %
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:	15.354	19.682	NaN
St. deviation:	4.8390	5.0939	NaN
Maximum:	20.806	25.355	NaN
Minimum:	3.6376	4.7256	NaN
Number of data:	15.000	15.000	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:	0.16545	-2.2273	0.083295	-2.0180
St. deviation:	0.44636	1.7740	0.72820	1.9616
Maximum:	3.2000	3.0000	5.7000	4.4000
Minimum:	-2.9000	-9.3000	-5.0000	-11.000
Number of data:	6000.0	6000.0	4250.0	4250.0

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	03-DEC-2006 00:10:56
CALIBRATION_DATABASE	GOM_CAL_AXVIEC20061124_151026_20061122_000000_20100101_000000	1	03-DEC-2006 00:10:56
LEVEL-1B_PROC_CONFIG	GOM_PR1_AXNIEC20050627_151042_20020301_000000_20100101_000000	1	03-DEC-2006 00:10:56
STAR_CATALOGUE	GOM_CAT_AXVIEC20020121_161009_20020101_000000_20200101_000000	1	03-DEC-2006 00:10:56
STELLAR_SPECTRA_DATABANK	GOM_STS_AXNIEC20040308_103538_20020101_160000_20100101_000000	1	03-DEC-2006 00:10:56
ECMWF_FILE	AUX_ECF_AXNECM20061202_061940_20061202_210000_20061203_090000	1	03-DEC-2006 00:10:56
ECMWF_FILE	AUX_ECF_AXNECM20061202_181901_20061203_030000_20061203_150000	42	03-DEC-2006 04:46:52
OPTIONAL_ECMWF_FILE	MISSING	1	03-DEC-2006 00:10:56
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20061202_214455_000060572053_00274_24877_2288.N1	1	03-DEC-2006 00:10:56
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20061202_233111_000054192053_00273_24876_2289.N1	15	03-DEC-2006 01:10:12
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20061202_233111_000054192053_00275_24878_2289.N1	19	03-DEC-2006 01:25:38
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20061203_010649_000041442053_00274_24877_2291.N1	32	03-DEC-2006 02:25:32
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20061203_040209_000057382053_00276_24879_2293.N1	42	03-DEC-2006 04:46:52

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