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	13NOV2008 10:26:27
Data source version	GOMOS/5.00
Start time of products	05NOV2008 00:08:02
Stop time of products	05NOV2008 05:47:32
Store outputs in DB	Yes
Nb of level 1b prods	48
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)

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_1PNPDE20081105_000802_000000382073_00317_34940_2403.N1	05-NOV-2008 00:08:02	Straylight	38.000	157	The1Eri	2.9060	9300.0	76	34940	No
2	GOM_TRA_1PNPDE20081105_002627_000000372073_00317_34940_2404.N1	05-NOV-2008 00:26:27	Bright	37.000	105	6Bet Ari	2.6450	8900.0	74	34940	No
3	GOM_TRA_1PNPDE20081105_003035_000000382073_00317_34940_2405.N1	05-NOV-2008 00:30:35	Bright	37.500	53	43Bet And	2.0480	3300.0	75	34940	No
4	GOM_TRA_1PNPDE20081105_003247_000000392073_00317_34940_2406.N1	05-NOV-2008 00:32:47	Bright	38.500	73	57Gam1And	2.2600	13100.	77	34940	No
5	GOM_TRA_1PNPDE20081105_003631_000000362073_00317_34940_2407.N1	05-NOV-2008 00:36:31	Bright	35.500	68	18Alp Cas	2.2250	4500.0	71	34940	No
6	GOM_TRA_1PNPDE20081105_004544_000000342073_00317_34940_2408.N1	05-NOV-2008 00:45:44	Bright	33.500	49	1Alp UMi	1.9900	6300.0	67	34940	No
7	GOM_TRA_1PNPDE20081105_004945_000000372073_00317_34940_2409.N1	05-NOV-2008 00:49:45	Bright	37.000	60	7Bet UMi	2.0810	3950.0	74	34940	No
8	GOM_TRA_1PNPDE20081105_005347_000000402073_00317_34940_2410.N1	05-NOV-2008 00:53:47	Bright	39.500	36	50Alp UMa	1.8000	6300.0	79	34940	No
9	GOM_TRA_1PNPDE20081105_005524_000000442073_00317_34940_2411.N1	05-NOV-2008 00:55:24	Bright	44.000	82	48Bet UMa	2.3650	10600.	88	34940	No
10	GOM_TRA_1PNPDE20081105_005911_000000582073_00317_34940_2412.N1	05-NOV-2008 00:59:11	Bright	57.500	174	52Psi UMa	3.0040	4400.0	115	34940	No
11	GOM_TRA_1PNPDE20081105_010651_000000412073_00317_34940_2413.N1	05-NOV-2008 01:06:51	Bright	40.500	96	68Del Leo	2.5600	9300.0	81	34940	No
12	GOM_TRA_1PNPDE20081105_012653_000000402073_00317_34940_2548.N1	05-NOV-2008 01:26:53	Dark	39.500	113	Mu Vel	2.6920	5000.0	79	34940	No
13	GOM_TRA_1PNPDE20081105_013307_000000392073_00318_34941_2549.N1	05-NOV-2008 01:33:07	Dark	39.000	29	Bet Car	1.6720	10200.	78	34941	No
14	GOM_TRA_1PNPDE20081105_013848_000000502073_00318_34941_2550.N1	05-NOV-2008 01:38:48	Dark	49.500	2	Alp Car	-0.73600	7000.0	99	34941	No
15	GOM_TRA_1PNPDE20081105_014838_000000402073_00318_34941_2551.N1	05-NOV-2008 01:48:38	Straylight	39.500	157	The1Eri	2.9060	9300.0	79	34941	No
16	GOM_TRA_1PNPDE20081105_020703_000000382073_00318_34941_2552.N1	05-NOV-2008 02:07:03	Bright	38.000	105	6Bet Ari	2.6450	8900.0	76	34941	No
17	GOM_TRA_1PNPDE20081105_021111_000000352073_00318_34941_2553.N1	05-NOV-2008 02:11:11	Bright	35.000	53	43Bet And	2.0480	3300.0	70	34941	No
18	GOM_TRA_1PNPDE20081105_021323_000000392073_00318_34941_2554.N1	05-NOV-2008 02:13:23	Bright	38.500	73	57Gam1And	2.2600	13100.	77	34941	No
19	GOM_TRA_1PNPDE20081105_021707_000000362073_00318_34941_2555.N1	05-NOV-2008 02:17:07	Bright	35.500	68	18Alp Cas	2.2250	4500.0	71	34941	No
20	GOM_TRA_1PNPDE20081105_022620_000000362073_00318_34941_2556.N1	05-NOV-2008 02:26:20	Bright	36.000	49	1Alp UMi	1.9900	6300.0	72	34941	No
21	GOM_TRA_1PNPDE20081105_023021_000000352073_00318_34941_2557.N1	05-NOV-2008 02:30:21	Bright	35.000	60	7Bet UMi	2.0810	3950.0	70	34941	No
22	GOM_TRA_1PNPDE20081105_023423_000000392073_00318_34941_2726.N1	05-NOV-2008 02:34:23	Bright	38.500	36	50Alp UMa	1.8000	6300.0	77	34941	No
23	GOM_TRA_1PNPDE20081105_023600_000000572073_00318_34941_2727.N1	05-NOV-2008 02:36:00	Bright	57.000	82	48Bet UMa	2.3650	10600.	114	34941	No
24	GOM_TRA_1PNPDE20081105_023947_000000372073_00318_34941_2728.N1	05-NOV-2008 02:39:47	Bright	37.000	174	52Psi UMa	3.0040	4400.0	74	34941	No
25	GOM_TRA_1PNPDE20081105_024727_000000392073_00318_34941_2729.N1	05-NOV-2008 02:47:27	Bright	39.000	96	68Del Leo	2.5600	9300.0	78	34941	No
26	GOM_TRA_1PNPDE20081105_030729_000000392073_00318_34941_2730.N1	05-NOV-2008 03:07:29	Dark	39.000	113	Mu Vel	2.6920	5000.0	78	34941	No
27	GOM_TRA_1PNPDE20081105_031344_000000382073_00319_34942_2731.N1	05-NOV-2008 03:13:44	Dark	38.000	29	Bet Car	1.6720	10200.	76	34942	No
28	GOM_TRA_1PNPDE20081105_031925_000000492073_00319_34942_2732.N1	05-NOV-2008 03:19:25	Dark	48.500	2	Alp Car	-0.73600	7000.0	97	34942	No
29	GOM_TRA_1PNPDE20081105_032914_000000402073_00319_34942_2733.N1	05-NOV-2008 03:29:14	Straylight	40.000	157	The1Eri	2.9060	9300.0	80	34942	No
30	GOM_TRA_1PNPDE20081105_034739_000000382073_00319_34942_2734.N1	05-NOV-2008 03:47:39	Bright	38.000	105	6Bet Ari	2.6450	8900.0	76	34942	No
31	GOM_TRA_1PNPDE20081105_035147_000000372073_00319_34942_2735.N1	05-NOV-2008 03:51:47	Bright	36.500	53	43Bet And	2.0480	3300.0	73	34942	No
32	GOM_TRA_1PNPDE20081105_035359_000000382073_00319_34942_2736.N1	05-NOV-2008 03:53:59	Bright	38.000	73	57Gam1And	2.2600	13100.	76	34942	No
33	GOM_TRA_1PNPDE20081105_035743_000000352073_00319_34942_2737.N1	05-NOV-2008 03:57:43	Bright	34.500	68	18Alp Cas	2.2250	4500.0	69	34942	No
34	GOM_TRA_1PNPDE20081105_040656_000000352073_00319_34942_2738.N1	05-NOV-2008 04:06:56	Bright	35.000	49	1Alp UMi	1.9900	6300.0	70	34942	No
35	GOM_TRA_1PNPDE20081105_041057_000000332073_00319_34942_2883.N1	05-NOV-2008 04:10:57	Bright	33.000	60	7Bet UMi	2.0810	3950.0	66	34942	Yes
36	GOM_TRA_1PNPDE20081105_041459_000000402073_00319_34942_2884.N1	05-NOV-2008 04:14:59	Bright	39.500	36	50Alp UMa	1.8000	6300.0	79	34942	No
37	GOM_TRA_1PNPDE20081105_041636_000000382073_00319_34942_2885.N1	05-NOV-2008 04:16:36	Bright	38.000	82	48Bet UMa	2.3650	10600.	76	34942	No
38	GOM_TRA_1PNPDE20081105_042023_000000462073_00319_34942_2886.N1	05-NOV-2008 04:20:23	Bright	46.000	174	52Psi UMa	3.0040	4400.0	92	34942	No
39	GOM_TRA_1PNPDE20081105_042803_000000402073_00319_34942_2887.N1	05-NOV-2008 04:28:03	Bright	40.000	96	68Del Leo	2.5600	9300.0	80	34942	No
40	GOM_TRA_1PNPDE20081105_044805_000000422073_00319_34942_2888.N1	05-NOV-2008 04:48:05	Dark	42.000	113	Mu Vel	2.6920	5000.0	84	34942	No
41	GOM_TRA_1PNPDE20081105_045420_000000392073_00320_34943_2889.N1	05-NOV-2008 04:54:20	Dark	38.500	29	Bet Car	1.6720	10200.	77	34943	No
42	GOM_TRA_1PNPDE20081105_050002_000000592073_00320_34943_2890.N1	05-NOV-2008 05:00:02	Dark	59.000	2	Alp Car	-0.73600	7000.0	118	34943	No
43	GOM_TRA_1PNPDE20081105_050951_000000382073_00320_34943_2891.N1	05-NOV-2008 05:09:51	Straylight	38.000	157	The1Eri	2.9060	9300.0	76	34943	No
44	GOM_TRA_1PNPDE20081105_052815_000000372073_00320_34943_2892.N1	05-NOV-2008 05:28:15	Bright	37.000	105	6Bet Ari	2.6450	8900.0	74	34943	No
45	GOM_TRA_1PNPDE20081105_053223_000000362073_00320_34943_2893.N1	05-NOV-2008 05:32:23	Bright	35.500	53	43Bet And	2.0480	3300.0	71	34943	No
46	GOM_TRA_1PNPDE20081105_053435_000000382073_00320_34943_2894.N1	05-NOV-2008 05:34:35	Bright	37.500	73	57Gam1And	2.2600	13100.	75	34943	No
47	GOM_TRA_1PNPDE20081105_053819_000000372073_00320_34943_2895.N1	05-NOV-2008 05:38:19	Bright	36.500	68	18Alp Cas	2.2250	4500.0	73	34943	No
48	GOM_TRA_1PNPDE20081105_054732_000000362073_00320_34943_2896.N1	05-NOV-2008 05:47:32	Bright	35.500	49	1Alp UMi	1.9900	6300.0	71	34943	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:	17.0213 %
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:	14.954	19.550	NaN
St. deviation:	4.2568	4.7284	NaN
Maximum:	18.515	26.344	NaN
Minimum:	4.8990	3.7528	NaN
Number of data:	9.0000	34.000	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:	0.050790	-1.3253	0.11967	-1.3443
St. deviation:	0.35248	0.55560	0.59829	0.78175
Maximum:	1.8000	0.50000	5.8000	2.9000
Minimum:	-1.9000	-4.1000	-4.2000	-6.1000
Number of data:	8400.0	8400.0	29000.	29000.

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	05-NOV-2008 00:08:02
CALIBRATION_DATABASE	GOM_CAL_AXVIEC20081103_151437_20081101_000000_20100101_000000	1	05-NOV-2008 00:08:02
LEVEL-1B_PROC_CONFIG	GOM_PR1_AXNIEC20050627_151042_20020301_000000_20100101_000000	1	05-NOV-2008 00:08:02
STAR_CATALOGUE	GOM_CAT_AXVIEC20020121_161009_20020101_000000_20200101_000000	1	05-NOV-2008 00:08:02
STELLAR_SPECTRA_DATABANK	GOM_STS_AXNIEC20040308_103538_20020101_160000_20100101_000000	1	05-NOV-2008 00:08:02
ECMWF_FILE	AUX_ECF_AXNECM20081104_082110_20081104_210000_20081105_090000	1	05-NOV-2008 00:08:02
ECMWF_FILE	AUX_ECF_AXNECM20081104_190111_20081105_030000_20081105_150000	35	05-NOV-2008 04:10:57
OPTIONAL_ECMWF_FILE	MISSING	1	05-NOV-2008 00:08:02
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20081104_214834_000060572073_00315_34938_6701.N1	1	05-NOV-2008 00:08:02
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20081104_233450_000057382073_00316_34939_6702.N1	12	05-NOV-2008 01:26:53
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20081105_011547_000041442073_00317_34940_6703.N1	22	05-NOV-2008 02:34:23
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20081105_023010_000054192073_00318_34941_6704.N1	35	05-NOV-2008 04:10:57

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