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	28JAN2009 05:36:32
Data source version	GOMOS/5.00
Start time of products	24JAN2009 00:01:24
Stop time of products	24JAN2009 02:48:04
Store outputs in DB	Yes
Nb of level 1b prods	49
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)

UTC start time	Star name	Star ID	Orbit
24-JAN-2009 01:13:39	BetLup	109	36085
24-JAN-2009 02:52:14	GamLup	131	36086
24-JAN-2009 15:03:19	21EpsCMa	23	36094
24-JAN-2009 15:04:42	24Omi2CMa	179	36094
24-JAN-2009 15:06:52	9AlpCMa	1	36094
24-JAN-2009 15:12:59	10AlpCMi	8	36094
24-JAN-2009 15:16:11	24GamGem	44	36094
24-JAN-2009 15:17:58	13MuGem	151	36094
24-JAN-2009 15:19:59	78BetGem	17	36094
24-JAN-2009 15:22:12	37TheAur	107	36094
24-JAN-2009 15:24:20	34BetAur	42	36094
24-JAN-2009 15:36:50	1AlpUMi	49	36094
24-JAN-2009 15:40:20	7BetUMi	60	36094
24-JAN-2009 15:44:54	14EtaDra	119	36094
24-JAN-2009 15:47:49	23BetDra	130	36094
24-JAN-2009 15:54:16	40ZetHer	133	36094
24-JAN-2009 15:57:37	27BetHer	127	36094
24-JAN-2009 15:59:14	55AlpOph	59	36094
24-JAN-2009 16:01:20	60BetOph	126	36094
24-JAN-2009 16:07:02	13ZetOph	98	36094
24-JAN-2009 16:11:32	21AlpSco	16	36094
24-JAN-2009 16:12:58	26EpsSco	75	36094
24-JAN-2009 16:17:07	GamLup	131	36094
24-JAN-2009 16:19:09	BetLup	109	36094
24-JAN-2009 16:20:57	DSA1027	0	36095
24-JAN-2009 16:22:40	Alp1Cen	4	36095
24-JAN-2009 16:24:11	EpsCen	77	36095
24-JAN-2009 16:27:14	Alp1Cru	12	36095
24-JAN-2009 16:28:48	DelCen	99	36095
24-JAN-2009 16:31:16	BetCar	29	36095
24-JAN-2009 16:33:27	IotCar	71	36095
24-JAN-2009 16:35:15	DelVel	46	36095
24-JAN-2009 16:37:52	Gam2Vel	34	36095
24-JAN-2009 16:39:58	ZetPup	70	36095
24-JAN-2009 16:41:27	PiPup	117	36095

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_1PNPDE20090124_000124_000000452075_00460_36085_9761.N1	24-JAN-2009 00:01:24	Straylight	44.500	1	9Alp CMa	-1.4400	11000.	89	36085	No
2	GOM_TRA_1PNPDE20090124_000733_000000502075_00460_36085_9762.N1	24-JAN-2009 00:07:33	Twi_and_stray	50.000	8	10Alp CMi	0.40000	6500.0	100	36085	No
3	GOM_TRA_1PNPDE20090124_001045_000000382075_00460_36085_9763.N1	24-JAN-2009 00:10:45	Bright	37.500	44	24Gam Gem	1.9280	11000.	75	36085	No
4	GOM_TRA_1PNPDE20090124_001231_000000382075_00460_36085_9764.N1	24-JAN-2009 00:12:31	Bright	37.500	151	13Mu Gem	2.8900	3000.0	75	36085	No
5	GOM_TRA_1PNPDE20090124_001435_000000412075_00460_36085_9765.N1	24-JAN-2009 00:14:35	Bright	41.000	17	78Bet Gem	1.1610	4500.0	82	36085	No
6	GOM_TRA_1PNPDE20090124_001645_000000352075_00460_36085_9766.N1	24-JAN-2009 00:16:45	Bright	34.500	107	37The Aur	2.6490	11000.	69	36085	No
7	GOM_TRA_1PNPDE20090124_001853_000000352075_00460_36085_9767.N1	24-JAN-2009 00:18:53	Bright	34.500	42	34Bet Aur	1.9000	10200.	69	36085	No
8	GOM_TRA_1PNPDE20090124_003123_000000362075_00460_36085_9768.N1	24-JAN-2009 00:31:23	Bright	35.500	49	1Alp UMi	1.9900	6300.0	71	36085	No
9	GOM_TRA_1PNPDE20090124_003456_000000392075_00460_36085_9769.N1	24-JAN-2009 00:34:56	Bright	38.500	60	7Bet UMi	2.0810	3950.0	77	36085	No
10	GOM_TRA_1PNPDE20090124_003929_000000402075_00460_36085_9770.N1	24-JAN-2009 00:39:29	Bright	39.500	119	14Eta Dra	2.7270	4700.0	79	36085	No
11	GOM_TRA_1PNPDE20090124_004222_000000372075_00460_36085_9771.N1	24-JAN-2009 00:42:22	Bright	37.000	130	23Bet Dra	2.7990	5800.0	74	36085	No
12	GOM_TRA_1PNPDE20090124_004848_000000582075_00460_36085_9772.N1	24-JAN-2009 00:48:48	Bright	58.000	133	40Zet Her	2.8070	6000.0	116	36085	No
13	GOM_TRA_1PNPDE20090124_005207_000000592075_00460_36085_9773.N1	24-JAN-2009 00:52:07	Bright	59.000	127	27Bet Her	2.7810	4700.0	118	36085	No
14	GOM_TRA_1PNPDE20090124_005345_000000352075_00460_36085_9774.N1	24-JAN-2009 00:53:45	Bright	35.000	59	55Alp Oph	2.0800	8900.0	70	36085	No
15	GOM_TRA_1PNPDE20090124_005552_000000522075_00460_36085_9775.N1	24-JAN-2009 00:55:52	Bright	51.500	126	60Bet Oph	2.7700	4250.0	103	36085	No
16	GOM_TRA_1PNPDE20090124_010131_000000462075_00460_36085_9776.N1	24-JAN-2009 01:01:31	Twi_and_stray	45.500	98	13Zet Oph	2.5710	30000.	91	36085	No
17	GOM_TRA_1PNPDE20090124_010601_000000482075_00460_36085_9937.N1	24-JAN-2009 01:06:01	Twilight	47.500	16	21Alp Sco	1.0200	3000.0	95	36085	No
18	GOM_TRA_1PNPDE20090124_010728_000000442075_00460_36085_9938.N1	24-JAN-2009 01:07:28	Dark	44.000	75	26Eps Sco	2.2910	4250.0	88	36085	No
19	GOM_TRA_1PNPDE20090124_011135_000000432075_00460_36085_9939.N1	24-JAN-2009 01:11:35	Dark	42.500	131	Gam Lup	2.8000	26000.	85	36085	No
20	GOM_TRA_1PNPDE20090124_011710_000000442075_00461_36086_9940.N1	24-JAN-2009 01:17:10	Dark	44.000	4	Alp1Cen	-0.010000	5800.0	88	36086	No
21	GOM_TRA_1PNPDE20090124_011838_000000422075_00461_36086_9941.N1	24-JAN-2009 01:18:38	Dark	42.000	77	Eps Cen	2.3030	28000.	84	36086	No
22	GOM_TRA_1PNPDE20090124_012143_000000482075_00461_36086_9942.N1	24-JAN-2009 01:21:43	Dark	47.500	12	Alp1Cru	0.77500	30000.	95	36086	No
23	GOM_TRA_1PNPDE20090124_012314_000000442075_00461_36086_9943.N1	24-JAN-2009 01:23:14	Dark	43.500	99	Del Cen	2.5750	26000.	87	36086	No
24	GOM_TRA_1PNPDE20090124_012547_000000382075_00461_36086_9944.N1	24-JAN-2009 01:25:47	Dark	38.000	29	Bet Car	1.6720	10200.	76	36086	No
25	GOM_TRA_1PNPDE20090124_012757_000000402075_00461_36086_9945.N1	24-JAN-2009 01:27:57	Dark	40.000	71	Iot Car	2.2460	7700.0	80	36086	No
26	GOM_TRA_1PNPDE20090124_012946_000000422075_00461_36086_9946.N1	24-JAN-2009 01:29:46	Dark	41.500	46	Del Vel	1.9540	10600.	83	36086	No
27	GOM_TRA_1PNPDE20090124_013222_000000442075_00461_36086_9947.N1	24-JAN-2009 01:32:22	Dark	44.000	34	Gam2Vel	1.7930	23000.	88	36086	No
28	GOM_TRA_1PNPDE20090124_013429_000000432075_00461_36086_9948.N1	24-JAN-2009 01:34:29	Straylight	42.500	70	Zet Pup	2.2460	39000.	85	36086	No
29	GOM_TRA_1PNPDE20090124_013558_000000462075_00461_36086_9949.N1	24-JAN-2009 01:35:58	Straylight	45.500	117	Pi Pup	2.7060	3800.0	91	36086	No
30	GOM_TRA_1PNPDE20090124_013827_000000432075_00461_36086_9950.N1	24-JAN-2009 01:38:27	Straylight	43.000	23	21Eps CMa	1.5020	26000.	86	36086	No
31	GOM_TRA_1PNPDE20090124_013950_000000402075_00461_36086_9951.N1	24-JAN-2009 01:39:50	Straylight	40.000	179	24Omi2CMa	3.0320	24000.	80	36086	No
32	GOM_TRA_1PNPDE20090124_014200_000000432075_00461_36086_9952.N1	24-JAN-2009 01:42:00	Straylight	42.500	1	9Alp CMa	-1.4400	11000.	85	36086	No
33	GOM_TRA_1PNPDE20090124_014809_000000512075_00461_36086_9953.N1	24-JAN-2009 01:48:09	Twi_and_stray	51.000	8	10Alp CMi	0.40000	6500.0	102	36086	No
34	GOM_TRA_1PNPDE20090124_015120_000000402075_00461_36086_9954.N1	24-JAN-2009 01:51:20	Bright	39.500	44	24Gam Gem	1.9280	11000.	79	36086	No
35	GOM_TRA_1PNPDE20090124_015307_000000382075_00461_36086_9955.N1	24-JAN-2009 01:53:07	Bright	37.500	151	13Mu Gem	2.8900	3000.0	75	36086	No
36	GOM_TRA_1PNPDE20090124_015510_000000432075_00461_36086_9956.N1	24-JAN-2009 01:55:10	Bright	43.000	17	78Bet Gem	1.1610	4500.0	86	36086	No
37	GOM_TRA_1PNPDE20090124_015721_000000342075_00461_36086_9957.N1	24-JAN-2009 01:57:21	Bright	34.000	107	37The Aur	2.6490	11000.	68	36086	No
38	GOM_TRA_1PNPDE20090124_015929_000000362075_00461_36086_9958.N1	24-JAN-2009 01:59:29	Bright	35.500	42	34Bet Aur	1.9000	10200.	71	36086	No
39	GOM_TRA_1PNPDE20090124_021159_000000342075_00461_36086_9959.N1	24-JAN-2009 02:11:59	Bright	34.000	49	1Alp UMi	1.9900	6300.0	68	36086	No
40	GOM_TRA_1PNPDE20090124_021531_000000392075_00461_36086_9960.N1	24-JAN-2009 02:15:31	Bright	39.000	60	7Bet UMi	2.0810	3950.0	78	36086	No
41	GOM_TRA_1PNPDE20090124_022004_000000402075_00461_36086_9961.N1	24-JAN-2009 02:20:04	Bright	39.500	119	14Eta Dra	2.7270	4700.0	79	36086	No
42	GOM_TRA_1PNPDE20090124_022258_000000362075_00461_36086_0063.N1	24-JAN-2009 02:22:58	Bright	35.500	130	23Bet Dra	2.7990	5800.0	71	36086	Yes
43	GOM_TRA_1PNPDE20090124_022924_000000572075_00461_36086_0064.N1	24-JAN-2009 02:29:24	Bright	56.500	133	40Zet Her	2.8070	6000.0	113	36086	No
44	GOM_TRA_1PNPDE20090124_023244_000000462075_00461_36086_0065.N1	24-JAN-2009 02:32:44	Bright	45.500	127	27Bet Her	2.7810	4700.0	91	36086	No
45	GOM_TRA_1PNPDE20090124_023421_000000362075_00461_36086_0066.N1	24-JAN-2009 02:34:21	Bright	35.500	59	55Alp Oph	2.0800	8900.0	71	36086	No
46	GOM_TRA_1PNPDE20090124_023628_000000352075_00461_36086_0067.N1	24-JAN-2009 02:36:28	Bright	34.500	126	60Bet Oph	2.7700	4250.0	69	36086	No
47	GOM_TRA_1PNPDE20090124_024207_000000462075_00461_36086_0068.N1	24-JAN-2009 02:42:07	Twi_and_stray	45.500	98	13Zet Oph	2.5710	30000.	91	36086	No
48	GOM_TRA_1PNPDE20090124_024638_000000472075_00461_36086_0069.N1	24-JAN-2009 02:46:38	Twilight	46.500	16	21Alp Sco	1.0200	3000.0	93	36086	No
49	GOM_TRA_1PNPDE20090124_024804_000000442075_00461_36086_0070.N1	24-JAN-2009 02:48:04	Dark	43.500	75	26Eps Sco	2.2910	4250.0	87	36086	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:	25.0000 %
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:	15.313	17.677	10.422
St. deviation:	3.9668	6.4118	0.73211
Maximum:	21.737	24.874	10.940
Minimum:	9.6622	4.0369	9.9045
Number of data:	11.000	25.000	2.0000

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:	0.10151	-1.2204	0.073454	-1.0590
St. deviation:	0.62571	5.7259	0.68853	5.0822
Maximum:	6.6000	15.300	4.3000	16.700
Minimum:	-3.5000	-25.500	-4.5000	-22.700
Number of data:	10500.	10500.	21800.	21800.

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	24-JAN-2009 00:01:24
CALIBRATION_DATABASE	GOM_CAL_AXVIEC20090123_085712_20090120_000000_20100101_000000	1	24-JAN-2009 00:01:24
LEVEL-1B_PROC_CONFIG	GOM_PR1_AXNIEC20050627_151042_20020301_000000_20100101_000000	1	24-JAN-2009 00:01:24
STAR_CATALOGUE	GOM_CAT_AXVIEC20020121_161009_20020101_000000_20200101_000000	1	24-JAN-2009 00:01:24
STELLAR_SPECTRA_DATABANK	GOM_STS_AXNIEC20040308_103538_20020101_160000_20100101_000000	1	24-JAN-2009 00:01:24
ECMWF_FILE	AUX_ECF_AXNECM20090123_163612_20090123_210000_20090124_090000	1	24-JAN-2009 00:01:24
OPTIONAL_ECMWF_FILE	MISSING	1	24-JAN-2009 00:01:24
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20090123_213838_000057382075_00458_36083_7223.N1	1	24-JAN-2009 00:01:24
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20090123_231935_000057382075_00459_36084_7224.N1	17	24-JAN-2009 01:06:01
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20090124_010033_000044632075_00460_36085_7225.N1	42	24-JAN-2009 02:22:58

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