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	21OCT2008 05:43:14
Data source version	GOMOS/5.00
Start time of products	19OCT2008 00:00:46
Stop time of products	19OCT2008 04:24:28
Store outputs in DB	Yes
Nb of level 1b prods	50
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_1PNPDE20081019_000046_000000402073_00073_34696_8857.N1	19-OCT-2008 00:00:46	Bright	39.500	51	41Gam1Leo	2.0100	4500.0	79	34696	No
2	GOM_TRA_1PNPDE20081019_000325_000000592073_00073_34696_8858.N1	19-OCT-2008 00:03:25	Bright	58.500	22	32Alp Leo	1.3600	15200.	117	34696	No
3	GOM_TRA_1PNPDE20081019_002034_000000462073_00073_34696_8985.N1	19-OCT-2008 00:20:34	Dark	46.000	65	Lam Vel	2.2040	4400.0	92	34696	No
4	GOM_TRA_1PNPDE20081019_002231_000000392073_00073_34696_8986.N1	19-OCT-2008 00:22:31	Dark	38.500	91	Kap Vel	2.4900	26000.	77	34696	No
5	GOM_TRA_1PNPDE20081019_002351_000000412073_00074_34697_8987.N1	19-OCT-2008 00:23:51	Dark	41.000	34	Gam2Vel	1.7930	23000.	82	34697	No
6	GOM_TRA_1PNPDE20081019_002931_000000512073_00074_34697_8988.N1	19-OCT-2008 00:29:31	Dark	51.000	2	Alp Car	-0.73600	7000.0	102	34697	No
7	GOM_TRA_1PNPDE20081019_003650_000000382073_00074_34697_8989.N1	19-OCT-2008 00:36:50	Dark	38.000	143	Alp Hyi	2.8570	7200.0	76	34697	No
8	GOM_TRA_1PNPDE20081019_003816_000000392073_00074_34697_8990.N1	19-OCT-2008 00:38:16	Dark	38.500	9	Alp Eri	0.45300	24000.	77	34697	No
9	GOM_TRA_1PNPDE20081019_004101_000000442073_00074_34697_8991.N1	19-OCT-2008 00:41:01	Straylight	43.500	157	The1Eri	2.9060	9300.0	87	34697	No
10	GOM_TRA_1PNPDE20081019_004947_000000432073_00074_34697_8992.N1	19-OCT-2008 00:49:47	Straylight	43.000	52	16Bet Cet	2.0370	4500.0	86	34697	No
11	GOM_TRA_1PNPDE20081019_005920_000000372073_00074_34697_8993.N1	19-OCT-2008 00:59:20	Bright	36.500	140	88Gam Peg	2.8340	26000.	73	34697	No
12	GOM_TRA_1PNPDE20081019_010316_000000372073_00074_34697_8994.N1	19-OCT-2008 01:03:16	Bright	36.500	58	21Alp And	2.0730	11000.	73	34697	No
13	GOM_TRA_1PNPDE20081019_010532_000000412073_00074_34697_8995.N1	19-OCT-2008 01:05:32	Bright	41.000	53	43Bet And	2.0480	3300.0	82	34697	No
14	GOM_TRA_1PNPDE20081019_011111_000000382073_00074_34697_8996.N1	19-OCT-2008 01:11:11	Bright	38.000	68	18Alp Cas	2.2250	4500.0	76	34697	No
15	GOM_TRA_1PNPDE20081019_011230_000000382073_00074_34697_8997.N1	19-OCT-2008 01:12:30	Bright	38.000	76	27Gam Cas	2.3000	30000.	76	34697	No
16	GOM_TRA_1PNPDE20081019_012018_000000362073_00074_34697_8998.N1	19-OCT-2008 01:20:18	Bright	36.000	49	1Alp UMi	1.9900	6300.0	72	34697	No
17	GOM_TRA_1PNPDE20081019_012832_000000382073_00074_34697_8999.N1	19-OCT-2008 01:28:32	Bright	38.000	36	50Alp UMa	1.8000	6300.0	76	34697	No
18	GOM_TRA_1PNPDE20081019_013006_000000372073_00074_34697_9000.N1	19-OCT-2008 01:30:06	Bright	36.500	82	48Bet UMa	2.3650	10600.	73	34697	No
19	GOM_TRA_1PNPDE20081019_013333_000000362073_00074_34697_9001.N1	19-OCT-2008 01:33:33	Bright	36.000	174	52Psi UMa	3.0040	4400.0	72	34697	No
20	GOM_TRA_1PNPDE20081019_014122_000000402073_00074_34697_9002.N1	19-OCT-2008 01:41:22	Bright	40.000	51	41Gam1Leo	2.0100	4500.0	80	34697	No
21	GOM_TRA_1PNPDE20081019_014401_000000592073_00074_34697_9003.N1	19-OCT-2008 01:44:01	Bright	58.500	22	32Alp Leo	1.3600	15200.	117	34697	No
22	GOM_TRA_1PNPDE20081019_020111_000000502073_00074_34697_9203.N1	19-OCT-2008 02:01:11	Dark	49.500	65	Lam Vel	2.2040	4400.0	99	34697	No
23	GOM_TRA_1PNPDE20081019_020307_000000382073_00074_34697_9204.N1	19-OCT-2008 02:03:07	Dark	38.000	91	Kap Vel	2.4900	26000.	76	34697	No
24	GOM_TRA_1PNPDE20081019_020428_000000462073_00075_34698_9205.N1	19-OCT-2008 02:04:28	Dark	45.500	34	Gam2Vel	1.7930	23000.	91	34698	No
25	GOM_TRA_1PNPDE20081019_021007_000000492073_00075_34698_9206.N1	19-OCT-2008 02:10:07	Dark	48.500	2	Alp Car	-0.73600	7000.0	97	34698	No
26	GOM_TRA_1PNPDE20081019_021726_000000372073_00075_34698_9207.N1	19-OCT-2008 02:17:26	Dark	37.000	143	Alp Hyi	2.8570	7200.0	74	34698	No
27	GOM_TRA_1PNPDE20081019_021852_000000392073_00075_34698_9208.N1	19-OCT-2008 02:18:52	Dark	39.000	9	Alp Eri	0.45300	24000.	78	34698	No
28	GOM_TRA_1PNPDE20081019_022138_000000432073_00075_34698_9209.N1	19-OCT-2008 02:21:38	Straylight	42.500	157	The1Eri	2.9060	9300.0	85	34698	No
29	GOM_TRA_1PNPDE20081019_023023_000000442073_00075_34698_9210.N1	19-OCT-2008 02:30:23	Straylight	43.500	52	16Bet Cet	2.0370	4500.0	87	34698	No
30	GOM_TRA_1PNPDE20081019_023956_000000362073_00075_34698_9211.N1	19-OCT-2008 02:39:56	Bright	35.500	140	88Gam Peg	2.8340	26000.	71	34698	No
31	GOM_TRA_1PNPDE20081019_024352_000000372073_00075_34698_9212.N1	19-OCT-2008 02:43:52	Bright	36.500	58	21Alp And	2.0730	11000.	73	34698	No
32	GOM_TRA_1PNPDE20081019_024608_000000412073_00075_34698_9213.N1	19-OCT-2008 02:46:08	Bright	40.500	53	43Bet And	2.0480	3300.0	81	34698	No
33	GOM_TRA_1PNPDE20081019_025146_000000372073_00075_34698_9214.N1	19-OCT-2008 02:51:46	Bright	36.500	68	18Alp Cas	2.2250	4500.0	73	34698	No
34	GOM_TRA_1PNPDE20081019_025306_000000372073_00075_34698_9215.N1	19-OCT-2008 02:53:06	Bright	37.000	76	27Gam Cas	2.3000	30000.	74	34698	No
35	GOM_TRA_1PNPDE20081019_030054_000000322073_00075_34698_9216.N1	19-OCT-2008 03:00:54	Bright	32.000	49	1Alp UMi	1.9900	6300.0	64	34698	No
36	GOM_TRA_1PNPDE20081019_030908_000000362073_00075_34698_9392.N1	19-OCT-2008 03:09:08	Bright	36.000	36	50Alp UMa	1.8000	6300.0	72	34698	No
37	GOM_TRA_1PNPDE20081019_031042_000000372073_00075_34698_9393.N1	19-OCT-2008 03:10:42	Bright	37.000	82	48Bet UMa	2.3650	10600.	74	34698	No
38	GOM_TRA_1PNPDE20081019_031409_000000362073_00075_34698_9394.N1	19-OCT-2008 03:14:09	Bright	36.000	174	52Psi UMa	3.0040	4400.0	72	34698	No
39	GOM_TRA_1PNPDE20081019_032158_000000402073_00075_34698_9395.N1	19-OCT-2008 03:21:58	Bright	39.500	51	41Gam1Leo	2.0100	4500.0	79	34698	No
40	GOM_TRA_1PNPDE20081019_032437_000000422073_00075_34698_9396.N1	19-OCT-2008 03:24:37	Bright	42.000	22	32Alp Leo	1.3600	15200.	84	34698	No
41	GOM_TRA_1PNPDE20081019_034147_000000532073_00075_34698_9397.N1	19-OCT-2008 03:41:47	Dark	53.000	65	Lam Vel	2.2040	4400.0	106	34698	No
42	GOM_TRA_1PNPDE20081019_034344_000000382073_00075_34698_9398.N1	19-OCT-2008 03:43:44	Dark	38.000	91	Kap Vel	2.4900	26000.	76	34698	No
43	GOM_TRA_1PNPDE20081019_034505_000000442073_00076_34699_9399.N1	19-OCT-2008 03:45:05	Dark	43.500	34	Gam2Vel	1.7930	23000.	87	34699	No
44	GOM_TRA_1PNPDE20081019_035044_000000482073_00076_34699_9400.N1	19-OCT-2008 03:50:44	Dark	47.500	2	Alp Car	-0.73600	7000.0	95	34699	No
45	GOM_TRA_1PNPDE20081019_035803_000000372073_00076_34699_9401.N1	19-OCT-2008 03:58:03	Dark	37.000	143	Alp Hyi	2.8570	7200.0	74	34699	No
46	GOM_TRA_1PNPDE20081019_035928_000000502073_00076_34699_9402.N1	19-OCT-2008 03:59:28	Dark	49.500	9	Alp Eri	0.45300	24000.	99	34699	No
47	GOM_TRA_1PNPDE20081019_040214_000000452073_00076_34699_9403.N1	19-OCT-2008 04:02:14	Straylight	44.500	157	The1Eri	2.9060	9300.0	89	34699	No
48	GOM_TRA_1PNPDE20081019_041059_000000432073_00076_34699_9404.N1	19-OCT-2008 04:10:59	Straylight	43.000	52	16Bet Cet	2.0370	4500.0	86	34699	No
49	GOM_TRA_1PNPDE20081019_042032_000000362073_00076_34699_9405.N1	19-OCT-2008 04:20:32	Bright	35.500	140	88Gam Peg	2.8340	26000.	71	34699	No
50	GOM_TRA_1PNPDE20081019_042428_000000372073_00076_34699_9406.N1	19-OCT-2008 04:24:28	Bright	36.500	58	21Alp And	2.0730	11000.	73	34699	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:	38.0000 %
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:	15.504	19.220	NaN
St. deviation:	4.8569	4.8169	NaN
Maximum:	21.885	30.172	NaN
Minimum:	5.3848	4.8306	NaN
Number of data:	18.000	26.000	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:	0.11114	-1.2672	0.099144	-1.3013
St. deviation:	0.49243	0.71216	0.65336	0.82557
Maximum:	3.5000	2.1000	4.8000	4.0000
Minimum:	-4.1000	-5.8000	-5.0000	-6.4000
Number of data:	16700.	16700.	22200.	22200.

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-OCT-2008 00:00:46
CALIBRATION_DATABASE	GOM_CAL_AXVIEC20081016_095516_20081014_000000_20100101_000000	1	19-OCT-2008 00:00:46
LEVEL-1B_PROC_CONFIG	GOM_PR1_AXNIEC20050627_151042_20020301_000000_20100101_000000	1	19-OCT-2008 00:00:46
STAR_CATALOGUE	GOM_CAT_AXVIEC20020121_161009_20020101_000000_20200101_000000	1	19-OCT-2008 00:00:46
STELLAR_SPECTRA_DATABANK	GOM_STS_AXNIEC20040308_103538_20020101_160000_20100101_000000	1	19-OCT-2008 00:00:46
ECMWF_FILE	AUX_ECF_AXNECM20081018_072112_20081018_210000_20081019_090000	1	19-OCT-2008 00:00:46
ECMWF_FILE	AUX_ECF_AXNECM20081018_192112_20081019_030000_20081019_150000	36	19-OCT-2008 03:09:08
OPTIONAL_ECMWF_FILE	MISSING	1	19-OCT-2008 00:00:46
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20081018_204137_000060572073_00071_34694_6587.N1	1	19-OCT-2008 00:00:46
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20081018_222752_000057382073_00072_34695_6588.N1	3	19-OCT-2008 00:20:34
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20081019_000850_000054192073_00073_34696_6589.N1	22	19-OCT-2008 02:01:11
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20081019_014428_000041442073_00074_34697_6590.N1	36	19-OCT-2008 03:09:08

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