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	20MAR2009 06:02:25
Data source version	GOMOS/5.00
Start time of products	17MAR2009 00:00:42
Stop time of products	17MAR2009 04:17:39
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
17-MAR-2009 00:34:02	34SigSgr	57	36829
17-MAR-2009 02:18:08	20EpsSgr	38	36830

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_1PNPDE20090317_000042_000000482077_00202_36829_6524.N1	17-MAR-2009 00:00:42	Bright	48.000	119	14Eta Dra	2.7270	4700.0	96	36829	No
2	GOM_TRA_1PNPDE20090317_000542_000000522077_00202_36829_6525.N1	17-MAR-2009 00:05:42	Bright	51.500	130	23Bet Dra	2.7990	5800.0	103	36829	No
3	GOM_TRA_1PNPDE20090317_001211_000000732077_00202_36829_6526.N1	17-MAR-2009 00:12:11	Bright	73.000	5	3Alp Lyr	0.033000	11000.	146	36829	No
4	GOM_TRA_1PNPDE20090317_002117_000000502077_00202_36829_6527.N1	17-MAR-2009 00:21:17	Twi_and_stray	49.500	118	50Gam Aql	2.7180	4600.0	99	36829	No
5	GOM_TRA_1PNPDE20090317_003527_000000512077_00202_36829_6673.N1	17-MAR-2009 00:35:27	Dark	51.000	137	22Lam Sgr	2.8240	4400.0	102	36829	No
6	GOM_TRA_1PNPDE20090317_003730_000000482077_00202_36829_6674.N1	17-MAR-2009 00:37:30	Dark	47.500	38	20Eps Sgr	1.8360	11000.	95	36829	No
7	GOM_TRA_1PNPDE20090317_004111_000000502077_00203_36830_6675.N1	17-MAR-2009 00:41:11	Dark	50.000	25	35Lam Sco	1.6200	28000.	100	36830	No
8	GOM_TRA_1PNPDE20090317_004953_000000512077_00203_36830_6676.N1	17-MAR-2009 00:49:53	Dark	51.000	131	Gam Lup	2.8000	26000.	102	36830	No
9	GOM_TRA_1PNPDE20090317_005152_000000472077_00203_36830_6677.N1	17-MAR-2009 00:51:52	Dark	46.500	78	Alp Lup	2.3040	28000.	93	36830	No
10	GOM_TRA_1PNPDE20090317_005319_000000522077_00203_36830_6678.N1	17-MAR-2009 00:53:19	Dark	51.500	81	Eta Cen	2.3560	28000.	103	36830	No
11	GOM_TRA_1PNPDE20090317_005626_000000562077_00203_36830_6679.N1	17-MAR-2009 00:56:26	Straylight	56.000	54	5The Cen	2.0550	4500.0	112	36830	No
12	GOM_TRA_1PNPDE20090317_005813_000000482077_00203_36830_6680.N1	17-MAR-2009 00:58:13	Straylight	48.000	123	Iot Cen	2.7500	10200.	96	36830	No
13	GOM_TRA_1PNPDE20090317_010312_000000342077_00203_36830_6681.N1	17-MAR-2009 01:03:12	Straylight	34.000	169	46Gam Hya	2.9910	4700.0	68	36830	No
14	GOM_TRA_1PNPDE20090317_010434_000000502077_00203_36830_6682.N1	17-MAR-2009 01:04:34	Straylight	50.000	171	2Eps Crv	3.0010	4250.0	100	36830	No
15	GOM_TRA_1PNPDE20090317_010615_000000482077_00203_36830_6683.N1	17-MAR-2009 01:06:15	Twi_and_stray	48.000	100	4Gam Crv	2.5800	13100.	96	36830	No
16	GOM_TRA_1PNPDE20090317_011718_000000472077_00203_36830_6684.N1	17-MAR-2009 01:17:18	Bright	46.500	62	94Bet Leo	2.1360	9700.0	93	36830	No
17	GOM_TRA_1PNPDE20090317_012907_000000402077_00203_36830_6685.N1	17-MAR-2009 01:29:07	Bright	40.000	87	64Gam UMa	2.4330	11000.	80	36830	No
18	GOM_TRA_1PNPDE20090317_013143_000000462077_00203_36830_6686.N1	17-MAR-2009 01:31:43	Bright	45.500	32	77Eps UMa	1.7630	11000.	91	36830	No
19	GOM_TRA_1PNPDE20090317_014117_000000482077_00203_36830_6687.N1	17-MAR-2009 01:41:17	Bright	48.000	119	14Eta Dra	2.7270	4700.0	96	36830	No
20	GOM_TRA_1PNPDE20090317_014618_000000542077_00203_36830_6688.N1	17-MAR-2009 01:46:18	Bright	53.500	130	23Bet Dra	2.7990	5800.0	107	36830	No
21	GOM_TRA_1PNPDE20090317_015247_000000632077_00203_36830_6689.N1	17-MAR-2009 01:52:47	Bright	62.500	5	3Alp Lyr	0.033000	11000.	125	36830	No
22	GOM_TRA_1PNPDE20090317_020153_000000522077_00203_36830_6690.N1	17-MAR-2009 02:01:53	Twi_and_stray	52.000	118	50Gam Aql	2.7180	4600.0	104	36830	No
23	GOM_TRA_1PNPDE20090317_021235_000000492077_00203_36830_6796.N1	17-MAR-2009 02:12:35	Dark	48.500	155	41Pi Sgr	2.9000	6600.0	97	36830	No
24	GOM_TRA_1PNPDE20090317_021438_000000492077_00203_36830_6797.N1	17-MAR-2009 02:14:38	Dark	48.500	57	34Sig Sgr	2.0660	26000.	97	36830	No
25	GOM_TRA_1PNPDE20090317_021604_000000562077_00203_36830_6798.N1	17-MAR-2009 02:16:04	Dark	56.000	137	22Lam Sgr	2.8240	4400.0	112	36830	No
26	GOM_TRA_1PNPDE20090317_022149_000000502077_00204_36831_6799.N1	17-MAR-2009 02:21:49	Dark	49.500	25	35Lam Sco	1.6200	28000.	99	36831	No
27	GOM_TRA_1PNPDE20090317_023030_000000532077_00204_36831_6800.N1	17-MAR-2009 02:30:30	Dark	53.000	131	Gam Lup	2.8000	26000.	106	36831	No
28	GOM_TRA_1PNPDE20090317_023228_000000492077_00204_36831_6801.N1	17-MAR-2009 02:32:28	Dark	49.000	78	Alp Lup	2.3040	28000.	98	36831	No
29	GOM_TRA_1PNPDE20090317_023356_000000552077_00204_36831_6802.N1	17-MAR-2009 02:33:56	Dark	54.500	81	Eta Cen	2.3560	28000.	109	36831	No
30	GOM_TRA_1PNPDE20090317_023703_000000632077_00204_36831_6803.N1	17-MAR-2009 02:37:03	Straylight	62.500	54	5The Cen	2.0550	4500.0	125	36831	No
31	GOM_TRA_1PNPDE20090317_023849_000000512077_00204_36831_6804.N1	17-MAR-2009 02:38:49	Straylight	50.500	123	Iot Cen	2.7500	10200.	101	36831	No
32	GOM_TRA_1PNPDE20090317_024348_000000342077_00204_36831_6805.N1	17-MAR-2009 02:43:48	Straylight	34.000	169	46Gam Hya	2.9910	4700.0	68	36831	No
33	GOM_TRA_1PNPDE20090317_024510_000000492077_00204_36831_6806.N1	17-MAR-2009 02:45:10	Straylight	49.000	171	2Eps Crv	3.0010	4250.0	98	36831	No
34	GOM_TRA_1PNPDE20090317_024651_000000482077_00204_36831_6807.N1	17-MAR-2009 02:46:51	Twi_and_stray	47.500	100	4Gam Crv	2.5800	13100.	95	36831	No
35	GOM_TRA_1PNPDE20090317_025754_000000452077_00204_36831_6808.N1	17-MAR-2009 02:57:54	Bright	44.500	62	94Bet Leo	2.1360	9700.0	89	36831	No
36	GOM_TRA_1PNPDE20090317_030943_000000412077_00204_36831_6809.N1	17-MAR-2009 03:09:43	Bright	40.500	87	64Gam UMa	2.4330	11000.	81	36831	No
37	GOM_TRA_1PNPDE20090317_031218_000000462077_00204_36831_6810.N1	17-MAR-2009 03:12:18	Bright	45.500	32	77Eps UMa	1.7630	11000.	91	36831	No
38	GOM_TRA_1PNPDE20090317_032153_000000472077_00204_36831_6979.N1	17-MAR-2009 03:21:53	Bright	47.000	119	14Eta Dra	2.7270	4700.0	94	36831	No
39	GOM_TRA_1PNPDE20090317_032653_000000542077_00204_36831_6980.N1	17-MAR-2009 03:26:53	Bright	53.500	130	23Bet Dra	2.7990	5800.0	107	36831	No
40	GOM_TRA_1PNPDE20090317_033323_000000732077_00204_36831_6981.N1	17-MAR-2009 03:33:23	Bright	73.000	5	3Alp Lyr	0.033000	11000.	146	36831	No
41	GOM_TRA_1PNPDE20090317_034230_000000522077_00204_36831_6982.N1	17-MAR-2009 03:42:30	Twi_and_stray	52.000	118	50Gam Aql	2.7180	4600.0	104	36831	No
42	GOM_TRA_1PNPDE20090317_035312_000000442077_00204_36831_6983.N1	17-MAR-2009 03:53:12	Dark	43.500	155	41Pi Sgr	2.9000	6600.0	87	36831	No
43	GOM_TRA_1PNPDE20090317_035515_000000462077_00204_36831_6984.N1	17-MAR-2009 03:55:15	Dark	45.500	57	34Sig Sgr	2.0660	26000.	91	36831	No
44	GOM_TRA_1PNPDE20090317_035641_000000482077_00204_36831_6985.N1	17-MAR-2009 03:56:41	Dark	48.000	137	22Lam Sgr	2.8240	4400.0	96	36831	No
45	GOM_TRA_1PNPDE20090317_035844_000000462077_00204_36831_6986.N1	17-MAR-2009 03:58:44	Dark	46.000	38	20Eps Sgr	1.8360	11000.	92	36831	No
46	GOM_TRA_1PNPDE20090317_040226_000000492077_00205_36832_6987.N1	17-MAR-2009 04:02:26	Dark	49.000	25	35Lam Sco	1.6200	28000.	98	36832	No
47	GOM_TRA_1PNPDE20090317_041107_000000522077_00205_36832_6988.N1	17-MAR-2009 04:11:07	Dark	52.000	131	Gam Lup	2.8000	26000.	104	36832	No
48	GOM_TRA_1PNPDE20090317_041305_000000472077_00205_36832_6989.N1	17-MAR-2009 04:13:05	Dark	46.500	78	Alp Lup	2.3040	28000.	93	36832	No
49	GOM_TRA_1PNPDE20090317_041433_000000522077_00205_36832_6990.N1	17-MAR-2009 04:14:33	Dark	51.500	81	Eta Cen	2.3560	28000.	103	36832	No
50	GOM_TRA_1PNPDE20090317_041739_000000622077_00205_36832_6991.N1	17-MAR-2009 04:17:39	Straylight	62.000	54	5The Cen	2.0550	4500.0	124	36832	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:	42.0000 %
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:	18.302	17.884	NaN
St. deviation:	2.6158	6.2955	NaN
Maximum:	22.536	22.988	NaN
Minimum:	12.564	3.9892	NaN
Number of data:	21.000	15.000	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:	0.33949	-1.1437	0.26033	-0.28299
St. deviation:	0.90460	2.4336	0.72951	2.4749
Maximum:	22.200	17.600	4.4000	14.600
Minimum:	-8.0000	-30.500	-3.4000	-15.100
Number of data:	24350.	24350.	16700.	16700.

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	17-MAR-2009 00:00:42
CALIBRATION_DATABASE	GOM_CAL_AXVIEC20090313_081258_20090311_000000_20100101_000000	1	17-MAR-2009 00:00:42
LEVEL-1B_PROC_CONFIG	GOM_PR1_AXNIEC20050627_151042_20020301_000000_20100101_000000	1	17-MAR-2009 00:00:42
STAR_CATALOGUE	GOM_CAT_AXVIEC20020121_161009_20020101_000000_20200101_000000	1	17-MAR-2009 00:00:42
STELLAR_SPECTRA_DATABANK	GOM_STS_AXNIEC20040308_103538_20020101_160000_20100101_000000	1	17-MAR-2009 00:00:42
ECMWF_FILE	AUX_ECF_AXNECM20090316_064112_20090316_210000_20090317_090000	1	17-MAR-2009 00:00:42
ECMWF_FILE	AUX_ECF_AXNECM20090316_182449_20090317_030000_20090317_150000	38	17-MAR-2009 03:21:53
OPTIONAL_ECMWF_FILE	MISSING	1	17-MAR-2009 00:00:42
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20090316_210015_000060572077_00200_36827_7562.N1	1	17-MAR-2009 00:00:42
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20090316_224631_000057382077_00201_36828_7563.N1	5	17-MAR-2009 00:35:27
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20090317_002728_000054192077_00202_36829_7564.N1	23	17-MAR-2009 02:12:35
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20090317_020306_000041442077_00203_36830_7565.N1	38	17-MAR-2009 03:21:53

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