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	31MAY2008 05:32:35
Data source version	GOMOS/5.00
Start time of products	QDS_YESTERDAY(/START)-1D (29MAY2008 00:00:00)
Stop time of products	QDS_YESTERDAY(/STOP)-1D (30MAY2008 00:00:00)
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)

UTC start time	Star name	Star ID	Orbit
29-MAY-2008 23:59:59	BetAra	141	32664

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_1PNPDE20080529_000621_000000432069_00030_32649_0406.N1	29-MAY-2008 00:06:21	Dark	42.500	52	16Bet Cet	2.0370	4500.0	85	32649	No
2	GOM_TRA_1PNPDE20080529_001439_000000532069_00030_32649_0407.N1	29-MAY-2008 00:14:39	Dark	53.000	18	24Alp PsA	1.1660	9700.0	106	32649	No
3	GOM_TRA_1PNPDE20080529_001812_000000592069_00031_32650_0408.N1	29-MAY-2008 00:18:12	Dark	58.500	63	Bet Gru	2.1500	2800.0	117	32650	No
4	GOM_TRA_1PNPDE20080529_002001_000000462069_00031_32650_0409.N1	29-MAY-2008 00:20:01	Dark	46.000	31	Alp Gru	1.7340	15200.	92	32650	No
5	GOM_TRA_1PNPDE20080529_002509_000000432069_00031_32650_0410.N1	29-MAY-2008 00:25:09	Straylight	42.500	45	Alp Pav	1.9400	26000.	85	32650	No
6	GOM_TRA_1PNPDE20080529_003133_000000412069_00031_32650_0411.N1	29-MAY-2008 00:31:33	Straylight	41.000	141	Bet Ara	2.8400	4600.0	82	32650	No
7	GOM_TRA_1PNPDE20080529_003426_000000472069_00031_32650_0412.N1	29-MAY-2008 00:34:26	Straylight	47.000	40	The Sco	1.8590	7100.0	94	32650	No
8	GOM_TRA_1PNPDE20080529_003615_000000502069_00031_32650_0413.N1	29-MAY-2008 00:36:15	Twi_and_stray	49.500	25	35Lam Sco	1.6200	28000.	99	32650	No
9	GOM_TRA_1PNPDE20080529_003806_000000462069_00031_32650_0414.N1	29-MAY-2008 00:38:06	Twi_and_stray	45.500	75	26Eps Sco	2.2910	4250.0	91	32650	No
10	GOM_TRA_1PNPDE20080529_004011_000000422069_00031_32650_0415.N1	29-MAY-2008 00:40:11	Twi_and_stray	41.500	136	23Tau Sco	2.8220	30000.	83	32650	No
11	GOM_TRA_1PNPDE20080529_004219_000000402069_00031_32650_0416.N1	29-MAY-2008 00:42:19	Bright	39.500	80	7Del Sco	2.3160	30000.	79	32650	No
12	GOM_TRA_1PNPDE20080529_004355_000000482069_00031_32650_0417.N1	29-MAY-2008 00:43:55	Bright	47.500	86	35Eta Oph	2.4300	10200.	95	32650	No
13	GOM_TRA_1PNPDE20080529_004549_000000422069_00031_32650_0418.N1	29-MAY-2008 00:45:49	Bright	41.500	98	13Zet Oph	2.5710	30000.	83	32650	No
14	GOM_TRA_1PNPDE20080529_004803_000000412069_00031_32650_0419.N1	29-MAY-2008 00:48:03	Bright	40.500	120	1Del Oph	2.7340	3200.0	81	32650	No
15	GOM_TRA_1PNPDE20080529_005104_000000382069_00031_32650_0420.N1	29-MAY-2008 00:51:04	Bright	37.500	102	24Alp Ser	2.6000	4250.0	75	32650	No
16	GOM_TRA_1PNPDE20080529_005702_000000402069_00031_32650_0421.N1	29-MAY-2008 00:57:02	Bright	39.500	67	5Alp CrB	2.2210	11000.	79	32650	No
17	GOM_TRA_1PNPDE20080529_005957_000000432069_00031_32650_0422.N1	29-MAY-2008 00:59:57	Bright	43.000	133	40Zet Her	2.8070	6000.0	86	32650	No
18	GOM_TRA_1PNPDE20080529_010744_000000392069_00031_32650_0423.N1	29-MAY-2008 01:07:44	Bright	39.000	119	14Eta Dra	2.7270	4700.0	78	32650	No
19	GOM_TRA_1PNPDE20080529_011015_000000372069_00031_32650_0424.N1	29-MAY-2008 01:10:15	Bright	37.000	60	7Bet UMi	2.0810	3950.0	74	32650	No
20	GOM_TRA_1PNPDE20080529_011819_000000462069_00031_32650_0425.N1	29-MAY-2008 01:18:19	Bright	46.000	89	5Alp Cep	2.4510	8000.0	92	32650	No
21	GOM_TRA_1PNPDE20080529_012300_000000552069_00031_32650_0426.N1	29-MAY-2008 01:23:00	Bright	54.500	76	27Gam Cas	2.3000	30000.	109	32650	No
22	GOM_TRA_1PNPDE20080529_013038_000000412069_00031_32650_0427.N1	29-MAY-2008 01:30:38	Bright	40.500	53	43Bet And	2.0480	3300.0	81	32650	No
23	GOM_TRA_1PNPDE20080529_013316_000000522069_00031_32650_0428.N1	29-MAY-2008 01:33:16	Twi_and_stray	51.500	58	21Alp And	2.0730	11000.	103	32650	No
24	GOM_TRA_1PNPDE20080529_013802_000000482069_00031_32650_0429.N1	29-MAY-2008 01:38:02	Dark	48.000	140	88Gam Peg	2.8340	26000.	96	32650	No
25	GOM_TRA_1PNPDE20080529_014658_000000452069_00031_32650_0539.N1	29-MAY-2008 01:46:58	Dark	45.000	52	16Bet Cet	2.0370	4500.0	90	32650	No
26	GOM_TRA_1PNPDE20080529_015516_000000522069_00031_32650_0540.N1	29-MAY-2008 01:55:16	Dark	52.000	18	24Alp PsA	1.1660	9700.0	104	32650	No
27	GOM_TRA_1PNPDE20080529_020038_000000442069_00032_32651_0541.N1	29-MAY-2008 02:00:38	Dark	44.000	31	Alp Gru	1.7340	15200.	88	32651	No
28	GOM_TRA_1PNPDE20080529_020546_000000422069_00032_32651_0542.N1	29-MAY-2008 02:05:46	Straylight	41.500	45	Alp Pav	1.9400	26000.	83	32651	No
29	GOM_TRA_1PNPDE20080529_021209_000000422069_00032_32651_0543.N1	29-MAY-2008 02:12:09	Straylight	41.500	141	Bet Ara	2.8400	4600.0	83	32651	No
30	GOM_TRA_1PNPDE20080529_021503_000000492069_00032_32651_0544.N1	29-MAY-2008 02:15:03	Straylight	49.000	40	The Sco	1.8590	7100.0	98	32651	No
31	GOM_TRA_1PNPDE20080529_021652_000000442069_00032_32651_0545.N1	29-MAY-2008 02:16:52	Twi_and_stray	44.000	25	35Lam Sco	1.6200	28000.	88	32651	No
32	GOM_TRA_1PNPDE20080529_021843_000000482069_00032_32651_0546.N1	29-MAY-2008 02:18:43	Twi_and_stray	48.000	75	26Eps Sco	2.2910	4250.0	96	32651	No
33	GOM_TRA_1PNPDE20080529_022047_000000412069_00032_32651_0547.N1	29-MAY-2008 02:20:47	Twi_and_stray	40.500	136	23Tau Sco	2.8220	30000.	81	32651	No
34	GOM_TRA_1PNPDE20080529_022255_000000402069_00032_32651_0548.N1	29-MAY-2008 02:22:55	Bright	39.500	80	7Del Sco	2.3160	30000.	79	32651	No
35	GOM_TRA_1PNPDE20080529_022431_000000472069_00032_32651_0549.N1	29-MAY-2008 02:24:31	Bright	47.000	86	35Eta Oph	2.4300	10200.	94	32651	No
36	GOM_TRA_1PNPDE20080529_022625_000000612069_00032_32651_0550.N1	29-MAY-2008 02:26:25	Bright	61.000	98	13Zet Oph	2.5710	30000.	122	32651	No
37	GOM_TRA_1PNPDE20080529_022838_000000412069_00032_32651_0551.N1	29-MAY-2008 02:28:38	Bright	41.000	120	1Del Oph	2.7340	3200.0	82	32651	No
38	GOM_TRA_1PNPDE20080529_023140_000000382069_00032_32651_0552.N1	29-MAY-2008 02:31:40	Bright	37.500	102	24Alp Ser	2.6000	4250.0	75	32651	No
39	GOM_TRA_1PNPDE20080529_023738_000000392069_00032_32651_0553.N1	29-MAY-2008 02:37:38	Bright	39.000	67	5Alp CrB	2.2210	11000.	78	32651	No
40	GOM_TRA_1PNPDE20080529_024032_000000452069_00032_32651_0554.N1	29-MAY-2008 02:40:32	Bright	45.000	133	40Zet Her	2.8070	6000.0	90	32651	No
41	GOM_TRA_1PNPDE20080529_024820_000000372069_00032_32651_0555.N1	29-MAY-2008 02:48:20	Bright	36.500	119	14Eta Dra	2.7270	4700.0	73	32651	No
42	GOM_TRA_1PNPDE20080529_025051_000000342069_00032_32651_0556.N1	29-MAY-2008 02:50:51	Bright	34.000	60	7Bet UMi	2.0810	3950.0	68	32651	No
43	GOM_TRA_1PNPDE20080529_025855_000000472069_00032_32651_0694.N1	29-MAY-2008 02:58:55	Bright	47.000	89	5Alp Cep	2.4510	8000.0	94	32651	No
44	GOM_TRA_1PNPDE20080529_030336_000000552069_00032_32651_0695.N1	29-MAY-2008 03:03:36	Bright	55.000	76	27Gam Cas	2.3000	30000.	110	32651	No
45	GOM_TRA_1PNPDE20080529_031114_000000422069_00032_32651_0696.N1	29-MAY-2008 03:11:14	Bright	42.000	53	43Bet And	2.0480	3300.0	84	32651	No
46	GOM_TRA_1PNPDE20080529_031352_000000522069_00032_32651_0697.N1	29-MAY-2008 03:13:52	Twi_and_stray	52.000	58	21Alp And	2.0730	11000.	104	32651	No
47	GOM_TRA_1PNPDE20080529_031838_000000492069_00032_32651_0698.N1	29-MAY-2008 03:18:38	Dark	48.500	140	88Gam Peg	2.8340	26000.	97	32651	No
48	GOM_TRA_1PNPDE20080529_032734_000000452069_00032_32651_0699.N1	29-MAY-2008 03:27:34	Dark	44.500	52	16Bet Cet	2.0370	4500.0	89	32651	No
49	GOM_TRA_1PNPDE20080529_033553_000000622069_00032_32651_0700.N1	29-MAY-2008 03:35:53	Dark	61.500	18	24Alp PsA	1.1660	9700.0	123	32651	No
50	GOM_TRA_1PNPDE20080529_034115_000000462069_00033_32652_0701.N1	29-MAY-2008 03:41:15	Dark	45.500	31	Alp Gru	1.7340	15200.	91	32652	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:	32.0000 %
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:	15.057	18.121	NaN
St. deviation:	4.5123	5.9735	NaN
Maximum:	20.545	25.560	NaN
Minimum:	4.6544	3.7827	NaN
Number of data:	12.000	24.000	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:	0.23184	-1.2624	0.26365	-1.2391
St. deviation:	0.56040	1.0356	0.75090	1.1749
Maximum:	5.0000	5.1000	4.7000	3.4000
Minimum:	-7.1000	-7.3000	-3.6000	-6.3000
Number of data:	13000.	13000.	22050.	22050.

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	29-MAY-2008 00:06:21
CALIBRATION_DATABASE	GOM_CAL_AXVIEC20080523_131121_20080521_000000_20100101_000000	1	29-MAY-2008 00:06:21
LEVEL-1B_PROC_CONFIG	GOM_PR1_AXNIEC20050627_151042_20020301_000000_20100101_000000	1	29-MAY-2008 00:06:21
STAR_CATALOGUE	GOM_CAT_AXVIEC20020121_161009_20020101_000000_20200101_000000	1	29-MAY-2008 00:06:21
STELLAR_SPECTRA_DATABANK	GOM_STS_AXNIEC20040308_103538_20020101_160000_20100101_000000	1	29-MAY-2008 00:06:21
ECMWF_FILE	AUX_ECF_AXNECM20080528_072113_20080528_210000_20080529_090000	1	29-MAY-2008 00:06:21
OPTIONAL_ECMWF_FILE	MISSING	1	29-MAY-2008 00:06:21
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20080528_221910_000057382069_00029_32648_5625.N1	1	29-MAY-2008 00:06:21
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20080529_000007_000057382069_00030_32649_5626.N1	25	29-MAY-2008 01:46:58
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20080529_014104_000041442069_00031_32650_5627.N1	43	29-MAY-2008 02:58:55

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