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	12OCT2006 06:50:33
Data source version	GOMOS/5.00
Start time of products	QDS_YESTERDAY(/START)-1D (10OCT2006 00:00:00)
Stop time of products	QDS_YESTERDAY(/STOP)-1D (11OCT2006 00:00:00)
Store outputs in DB	Yes
Nb of level 1b prods	49
Nb of prods with errors	7

2. Summary of products arrived in PCF (Product Control Facility)

2.1 Level 0 products arrived in PCF (see template here)

2.2 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_1PNPDE20061010_000636_000000412052_00002_24104_1532.N1	10-OCT-2006 00:06:36	Straylight	40.500	52	16Bet Cet	2.0370	4500.0	81	24104	Yes
2	GOM_TRA_1PNPDE20061010_001629_000000292052_00002_24104_1533.N1	10-OCT-2006 00:16:29	Bright	29.000	140	88Gam Peg	2.8340	26000.	58	24104	Yes
3	GOM_TRA_1PNPDE20061010_002030_000000322052_00002_24104_1530.N1	10-OCT-2006 00:20:30	Bright	32.000	58	21Alp And	2.0730	11000.	64	24104	No
4	GOM_TRA_1PNPDE20061010_002846_000000332052_00002_24104_1535.N1	10-OCT-2006 00:28:46	Bright	33.000	68	18Alp Cas	2.2250	4500.0	66	24104	No
5	GOM_TRA_1PNPDE20061010_003010_000000322052_00002_24104_1536.N1	10-OCT-2006 00:30:10	Bright	31.500	76	27Gam Cas	2.3000	30000.	63	24104	No
6	GOM_TRA_1PNPDE20061010_003729_000000292052_00002_24104_1537.N1	10-OCT-2006 00:37:29	Bright	28.500	49	1Alp UMi	1.9900	6300.0	57	24104	Yes
7	GOM_TRA_1PNPDE20061010_004537_000000322052_00002_24104_1534.N1	10-OCT-2006 00:45:37	Bright	31.500	36	50Alp UMa	1.8000	6300.0	63	24104	Yes
8	GOM_TRA_1PNPDE20061010_004709_000000302052_00002_24104_1539.N1	10-OCT-2006 00:47:09	Bright	30.000	82	48Bet UMa	2.3650	10600.	60	24104	No
9	GOM_TRA_1PNPDE20061010_005027_000000282052_00002_24104_1540.N1	10-OCT-2006 00:50:27	Bright	27.500	174	52Psi UMa	3.0040	4400.0	55	24104	No
10	GOM_TRA_1PNPDE20061010_005715_000000322052_00002_24104_1541.N1	10-OCT-2006 00:57:15	Bright	32.000	166	17Eps Leo	2.9800	6000.0	64	24104	No
11	GOM_TRA_1PNPDE20061010_010024_000000322052_00002_24104_1542.N1	10-OCT-2006 01:00:24	Bright	32.000	22	32Alp Leo	1.3600	15200.	64	24104	No
12	GOM_TRA_1PNPDE20061010_010722_000000412052_00002_24104_1543.N1	10-OCT-2006 01:07:22	Twilight	41.000	48	30Alp Hya	1.9770	4100.0	82	24104	No
13	GOM_TRA_1PNPDE20061010_011659_000000462052_00002_24104_1544.N1	10-OCT-2006 01:16:59	Dark	46.000	65	Lam Vel	2.2040	4400.0	92	24104	No
14	GOM_TRA_1PNPDE20061010_011956_000000372052_00002_24104_1545.N1	10-OCT-2006 01:19:56	Dark	36.500	34	Gam2Vel	1.7930	23000.	73	24104	No
15	GOM_TRA_1PNPDE20061010_012403_000000392052_00003_24105_1546.N1	10-OCT-2006 01:24:03	Dark	39.000	161	Tau Pup	2.9310	4500.0	78	24105	No
16	GOM_TRA_1PNPDE20061010_014712_000000372052_00003_24105_1529.N1	10-OCT-2006 01:47:12	Straylight	36.500	52	16Bet Cet	2.0370	4500.0	73	24105	No
17	GOM_TRA_1PNPDE20061010_015705_000000312052_00003_24105_1536.N1	10-OCT-2006 01:57:05	Bright	30.500	140	88Gam Peg	2.8340	26000.	61	24105	No
18	GOM_TRA_1PNPDE20061010_020106_000000332052_00003_24105_1537.N1	10-OCT-2006 02:01:06	Bright	32.500	58	21Alp And	2.0730	11000.	65	24105	No
19	GOM_TRA_1PNPDE20061010_020922_000000312052_00003_24105_1538.N1	10-OCT-2006 02:09:22	Bright	30.500	68	18Alp Cas	2.2250	4500.0	61	24105	No
20	GOM_TRA_1PNPDE20061010_021046_000000332052_00003_24105_1533.N1	10-OCT-2006 02:10:46	Bright	33.000	76	27Gam Cas	2.3000	30000.	66	24105	No
21	GOM_TRA_1PNPDE20061010_021804_000000292052_00003_24105_1540.N1	10-OCT-2006 02:18:04	Bright	29.000	49	1Alp UMi	1.9900	6300.0	58	24105	Yes
22	GOM_TRA_1PNPDE20061010_022613_000000322052_00003_24105_1541.N1	10-OCT-2006 02:26:13	Bright	32.000	36	50Alp UMa	1.8000	6300.0	64	24105	No
23	GOM_TRA_1PNPDE20061010_022745_000000302052_00003_24105_1542.N1	10-OCT-2006 02:27:45	Bright	29.500	82	48Bet UMa	2.3650	10600.	59	24105	No
24	GOM_TRA_1PNPDE20061010_023104_000000302052_00003_24105_1537.N1	10-OCT-2006 02:31:04	Bright	29.500	174	52Psi UMa	3.0040	4400.0	59	24105	No
25	GOM_TRA_1PNPDE20061010_023751_000000342052_00003_24105_1538.N1	10-OCT-2006 02:37:51	Bright	33.500	166	17Eps Leo	2.9800	6000.0	67	24105	No
26	GOM_TRA_1PNPDE20061010_024100_000000412052_00003_24105_1539.N1	10-OCT-2006 02:41:00	Bright	40.500	22	32Alp Leo	1.3600	15200.	81	24105	No
27	GOM_TRA_1PNPDE20061010_024758_000000412052_00003_24105_1540.N1	10-OCT-2006 02:47:58	Twilight	40.500	48	30Alp Hya	1.9770	4100.0	81	24105	No
28	GOM_TRA_1PNPDE20061010_025735_000000392052_00003_24105_1541.N1	10-OCT-2006 02:57:35	Dark	38.500	65	Lam Vel	2.2040	4400.0	77	24105	No
29	GOM_TRA_1PNPDE20061010_030033_000000362052_00003_24105_1542.N1	10-OCT-2006 03:00:33	Dark	36.000	34	Gam2Vel	1.7930	23000.	72	24105	No
30	GOM_TRA_1PNPDE20061010_030440_000000372052_00004_24106_1543.N1	10-OCT-2006 03:04:40	Dark	37.000	161	Tau Pup	2.9310	4500.0	74	24106	No
31	GOM_TRA_1PNPDE20061010_030603_000000402052_00004_24106_1544.N1	10-OCT-2006 03:06:03	Dark	40.000	2	Alp Car	-0.73600	7000.0	80	24106	No
32	GOM_TRA_1PNPDE20061010_031430_000000322052_00004_24106_1545.N1	10-OCT-2006 03:14:30	Dark	32.000	143	Alp Hyi	2.8570	7200.0	64	24106	No
33	GOM_TRA_1PNPDE20061010_032749_000000402052_00004_24106_1530.N1	10-OCT-2006 03:27:49	Straylight	40.000	52	16Bet Cet	2.0370	4500.0	80	24106	Yes
34	GOM_TRA_1PNPDE20061010_033741_000000312052_00004_24106_1531.N1	10-OCT-2006 03:37:41	Bright	31.000	140	88Gam Peg	2.8340	26000.	62	24106	Yes
35	GOM_TRA_1PNPDE20061010_034142_000000342052_00004_24106_1532.N1	10-OCT-2006 03:41:42	Bright	33.500	58	21Alp And	2.0730	11000.	67	24106	No
36	GOM_TRA_1PNPDE20061010_034958_000000322052_00004_24106_1533.N1	10-OCT-2006 03:49:58	Bright	32.000	68	18Alp Cas	2.2250	4500.0	64	24106	No
37	GOM_TRA_1PNPDE20061010_035122_000000332052_00004_24106_1534.N1	10-OCT-2006 03:51:22	Bright	32.500	76	27Gam Cas	2.3000	30000.	65	24106	No
38	GOM_TRA_1PNPDE20061010_035839_000000322052_00004_24106_1535.N1	10-OCT-2006 03:58:39	Bright	31.500	49	1Alp UMi	1.9900	6300.0	63	24106	No
39	GOM_TRA_1PNPDE20061010_040649_000000322052_00004_24106_1536.N1	10-OCT-2006 04:06:49	Bright	31.500	36	50Alp UMa	1.8000	6300.0	63	24106	No
40	GOM_TRA_1PNPDE20061010_040821_000000302052_00004_24106_1537.N1	10-OCT-2006 04:08:21	Bright	29.500	82	48Bet UMa	2.3650	10600.	59	24106	No
41	GOM_TRA_1PNPDE20061010_041140_000000282052_00004_24106_1538.N1	10-OCT-2006 04:11:40	Bright	27.500	174	52Psi UMa	3.0040	4400.0	55	24106	No
42	GOM_TRA_1PNPDE20061010_041827_000000512052_00004_24106_1539.N1	10-OCT-2006 04:18:27	Bright	51.000	166	17Eps Leo	2.9800	6000.0	102	24106	No
43	GOM_TRA_1PNPDE20061010_042137_000000342052_00004_24106_1540.N1	10-OCT-2006 04:21:37	Bright	33.500	22	32Alp Leo	1.3600	15200.	67	24106	No
44	GOM_TRA_1PNPDE20061010_042835_000000412052_00004_24106_1541.N1	10-OCT-2006 04:28:35	Twilight	40.500	48	30Alp Hya	1.9770	4100.0	81	24106	No
45	GOM_TRA_1PNPDE20061010_043812_000000402052_00004_24106_1542.N1	10-OCT-2006 04:38:12	Dark	39.500	65	Lam Vel	2.2040	4400.0	79	24106	No
46	GOM_TRA_1PNPDE20061010_044110_000000362052_00004_24106_1543.N1	10-OCT-2006 04:41:10	Dark	35.500	34	Gam2Vel	1.7930	23000.	71	24106	No
47	GOM_TRA_1PNPDE20061010_044517_000000402052_00005_24107_1544.N1	10-OCT-2006 04:45:17	Dark	39.500	161	Tau Pup	2.9310	4500.0	79	24107	No
48	GOM_TRA_1PNPDE20061010_044640_000000462052_00005_24107_1545.N1	10-OCT-2006 04:46:40	Dark	46.000	2	Alp Car	-0.73600	7000.0	92	24107	No
49	GOM_TRA_1PNPDE20061010_045506_000000322052_00005_24107_1546.N1	10-OCT-2006 04:55:06	Dark	32.000	143	Alp Hyi	2.8570	7200.0	64	24107	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:	14.2857 %
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:	15.844	20.096	12.544
St. deviation:	4.4358	4.6367	0.32151
Maximum:	20.019	27.392	12.892
Minimum:	5.7684	4.6874	12.257
Number of data:	13.000	25.000	3.0000

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:	0.13326	-2.0643	0.070959	-1.9136
St. deviation:	0.44201	2.7945	0.68435	2.1197
Maximum:	2.6000	7.6000	4.5000	4.9000
Minimum:	-2.3000	-10.300	-1.5000	-3.6000
Number of data:	5250.0	5250.0	7150.0	7150.0

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.

qds_image

8. Auxiliary Data Files used for the production reported in section 2.2

The number reported in the third column indicates since which file (see list in section 2.2) 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	10-OCT-2006 00:06:36
CALIBRATION_DATABASE	GOM_CAL_AXVIEC20061002_131438_20060930_000000_20100101_000000	1	10-OCT-2006 00:06:36
LEVEL-1B_PROC_CONFIG	GOM_PR1_AXNIEC20050627_151042_20020301_000000_20100101_000000	1	10-OCT-2006 00:06:36
STAR_CATALOGUE	GOM_CAT_AXVIEC20020121_161009_20020101_000000_20200101_000000	1	10-OCT-2006 00:06:36
STELLAR_SPECTRA_DATABANK	GOM_STS_AXNIEC20040308_103538_20020101_160000_20100101_000000	1	10-OCT-2006 00:06:36
ECMWF_FILE	AUX_ECA_AXNECM20061010_061437_20061009_210000_20061010_090000	1	10-OCT-2006 00:06:36
ECMWF_FILE	AUX_ECF_AXNECM20061009_062928_20061009_210000_20061010_090000	3	10-OCT-2006 00:20:30
ECMWF_FILE	AUX_ECA_AXNECM20061010_061437_20061009_210000_20061010_090000	4	10-OCT-2006 00:28:46
ECMWF_FILE	AUX_ECF_AXNECM20061009_062928_20061009_210000_20061010_090000	7	10-OCT-2006 00:45:37
ECMWF_FILE	AUX_ECA_AXNECM20061010_061437_20061009_210000_20061010_090000	8	10-OCT-2006 00:47:09
ECMWF_FILE	AUX_ECF_AXNECM20061009_062928_20061009_210000_20061010_090000	16	10-OCT-2006 01:47:12
ECMWF_FILE	AUX_ECA_AXNECM20061010_180614_20061010_030000_20061010_150000	17	10-OCT-2006 01:57:05
ECMWF_FILE	AUX_ECF_AXNECM20061009_062928_20061009_210000_20061010_090000	20	10-OCT-2006 02:10:46
ECMWF_FILE	AUX_ECA_AXNECM20061010_180614_20061010_030000_20061010_150000	21	10-OCT-2006 02:18:04
ECMWF_FILE	AUX_ECF_AXNECM20061009_062928_20061009_210000_20061010_090000	24	10-OCT-2006 02:31:04
ECMWF_FILE	AUX_ECF_AXNECM20061009_183429_20061010_030000_20061010_150000	33	10-OCT-2006 03:27:49
OPTIONAL_ECMWF_FILE	MISSING	1	10-OCT-2006 00:06:36
ORBIT_DATA_FILE	AUX_FPO_AXVPDS20061009_235412_20061009_183827_20061019_200442	1	10-OCT-2006 00:06:36
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20061009_221539_000060572052_00001_24103_0736.N1	3	10-OCT-2006 00:20:30
ORBIT_DATA_FILE	AUX_FPO_AXVPDS20061009_235412_20061009_183827_20061019_200442	4	10-OCT-2006 00:28:46
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20061009_221539_000060572052_00001_24103_0736.N1	7	10-OCT-2006 00:45:37
ORBIT_DATA_FILE	AUX_FPO_AXVPDS20061009_235412_20061009_183827_20061019_200442	8	10-OCT-2006 00:47:09
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20061010_014252_000057382052_00003_24105_0738.N1	16	10-OCT-2006 01:47:12

Reports

Daily Report Level 2 Dataset IPF v6.01

Daily Reports of NRT data

Data Anomaly Reports

Instrument Anomaly Reports

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Last modified:
24-Apr-2008