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	18JAN2007 05:33:05
Data source version	GOMOS/5.00
Start time of products	QDS_YESTERDAY(/START)-1D (16JAN2007 00:00:00)
Stop time of products	QDS_YESTERDAY(/STOP)-1D (17JAN2007 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)

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_1PNPDE20070116_000135_000000522054_00403_25507_8934.N1	16-JAN-2007 00:01:35	Dark	51.500	4	Alp1Cen	-0.010000	5800.0	103	25507	No
2	GOM_TRA_1PNPDE20070116_000913_000000372054_00403_25507_8935.N1	16-JAN-2007 00:09:13	Dark	36.500	124	The Car	2.7640	30000.	73	25507	No
3	GOM_TRA_1PNPDE20070116_001034_000000362054_00403_25507_8936.N1	16-JAN-2007 00:10:34	Dark	36.000	29	Bet Car	1.6720	10200.	72	25507	No
4	GOM_TRA_1PNPDE20070116_001230_000000402054_00403_25507_8937.N1	16-JAN-2007 00:12:30	Dark	39.500	71	Iot Car	2.2460	7700.0	79	25507	No
5	GOM_TRA_1PNPDE20070116_001422_000000432054_00403_25507_8938.N1	16-JAN-2007 00:14:22	Dark	43.000	46	Del Vel	1.9540	10600.	86	25507	No
6	GOM_TRA_1PNPDE20070116_001721_000000512054_00403_25507_8939.N1	16-JAN-2007 00:17:21	Dark	50.500	2	Alp Car	-0.73600	7000.0	101	25507	No
7	GOM_TRA_1PNPDE20070116_002054_000000432054_00403_25507_8940.N1	16-JAN-2007 00:20:54	Straylight	43.000	117	Pi Pup	2.7060	3800.0	86	25507	No
8	GOM_TRA_1PNPDE20070116_002327_000000432054_00403_25507_8941.N1	16-JAN-2007 00:23:27	Straylight	42.500	23	21Eps CMa	1.5020	26000.	85	25507	No
9	GOM_TRA_1PNPDE20070116_002452_000000412054_00403_25507_8942.N1	16-JAN-2007 00:24:52	Straylight	40.500	179	24Omi2CMa	3.0320	24000.	81	25507	No
10	GOM_TRA_1PNPDE20070116_002705_000000452054_00403_25507_8943.N1	16-JAN-2007 00:27:05	Straylight	45.000	1	9Alp CMa	-1.4400	11000.	90	25507	No
11	GOM_TRA_1PNPDE20070116_002935_000000402054_00403_25507_8944.N1	16-JAN-2007 00:29:35	Straylight	39.500	56	53Kap Ori	2.0650	30000.	79	25507	No
12	GOM_TRA_1PNPDE20070116_003045_000000392054_00403_25507_8945.N1	16-JAN-2007 00:30:45	Straylight	39.000	125	44Iot Ori	2.7700	30000.	78	25507	No
13	GOM_TRA_1PNPDE20070116_003202_000000422054_00403_25507_8946.N1	16-JAN-2007 00:32:02	Twi_and_stray	42.000	30	46Eps Ori	1.6940	30000.	84	25507	No
14	GOM_TRA_1PNPDE20070116_003415_000000522054_00403_25507_8947.N1	16-JAN-2007 00:34:15	Twi_and_stray	52.000	14	58Alp Ori	0.87000	3000.0	104	25507	No
15	GOM_TRA_1PNPDE20070116_003812_000000342054_00403_25507_8948.N1	16-JAN-2007 00:38:12	Bright	34.000	176	23Zet Tau	3.0200	22000.	68	25507	No
16	GOM_TRA_1PNPDE20070116_004021_000000362054_00403_25507_8949.N1	16-JAN-2007 00:40:21	Bright	36.000	28	12Bet Tau	1.6500	15200.	72	25507	No
17	GOM_TRA_1PNPDE20070116_004157_000000382054_00403_25507_8950.N1	16-JAN-2007 00:41:57	Bright	37.500	114	3Iot Aur	2.6930	4600.0	75	25507	No
18	GOM_TRA_1PNPDE20070116_004448_000000362054_00403_25507_8951.N1	16-JAN-2007 00:44:48	Bright	35.500	42	34Bet Aur	1.9000	10200.	71	25507	No
19	GOM_TRA_1PNPDE20070116_005721_000000362054_00403_25507_8952.N1	16-JAN-2007 00:57:21	Bright	36.000	49	1Alp UMi	1.9900	6300.0	72	25507	No
20	GOM_TRA_1PNPDE20070116_010813_000000362054_00403_25507_8953.N1	16-JAN-2007 01:08:13	Bright	36.000	130	23Bet Dra	2.7990	5800.0	72	25507	No
21	GOM_TRA_1PNPDE20070116_011430_000000362054_00403_25507_8954.N1	16-JAN-2007 01:14:30	Bright	36.000	133	40Zet Her	2.8070	6000.0	72	25507	No
22	GOM_TRA_1PNPDE20070116_011919_000000332054_00403_25507_8955.N1	16-JAN-2007 01:19:19	Bright	32.500	59	55Alp Oph	2.0800	8900.0	65	25507	No
23	GOM_TRA_1PNPDE20070116_013105_000000482054_00403_25507_9092.N1	16-JAN-2007 01:31:05	Twi_and_stray	47.500	16	21Alp Sco	1.0200	3000.0	95	25507	No
24	GOM_TRA_1PNPDE20070116_013246_000000392054_00403_25507_9093.N1	16-JAN-2007 01:32:46	Twilight	38.500	75	26Eps Sco	2.2910	4250.0	77	25507	No
25	GOM_TRA_1PNPDE20070116_013621_000000392054_00403_25507_9094.N1	16-JAN-2007 01:36:21	Dark	39.000	131	Gam Lup	2.8000	26000.	78	25507	No
26	GOM_TRA_1PNPDE20070116_014211_000000412054_00404_25508_9095.N1	16-JAN-2007 01:42:11	Dark	40.500	4	Alp1Cen	-0.010000	5800.0	81	25508	No
27	GOM_TRA_1PNPDE20070116_014950_000000392054_00404_25508_9096.N1	16-JAN-2007 01:49:50	Dark	38.500	124	The Car	2.7640	30000.	77	25508	No
28	GOM_TRA_1PNPDE20070116_015111_000000392054_00404_25508_9097.N1	16-JAN-2007 01:51:11	Dark	38.500	29	Bet Car	1.6720	10200.	77	25508	No
29	GOM_TRA_1PNPDE20070116_015307_000000422054_00404_25508_9098.N1	16-JAN-2007 01:53:07	Dark	42.000	71	Iot Car	2.2460	7700.0	84	25508	No
30	GOM_TRA_1PNPDE20070116_015459_000000422054_00404_25508_9099.N1	16-JAN-2007 01:54:59	Dark	42.000	46	Del Vel	1.9540	10600.	84	25508	No
31	GOM_TRA_1PNPDE20070116_015757_000000432054_00404_25508_9100.N1	16-JAN-2007 01:57:57	Dark	43.000	2	Alp Car	-0.73600	7000.0	86	25508	No
32	GOM_TRA_1PNPDE20070116_020130_000000432054_00404_25508_9101.N1	16-JAN-2007 02:01:30	Straylight	43.000	117	Pi Pup	2.7060	3800.0	86	25508	No
33	GOM_TRA_1PNPDE20070116_020403_000000442054_00404_25508_9102.N1	16-JAN-2007 02:04:03	Straylight	43.500	23	21Eps CMa	1.5020	26000.	87	25508	No
34	GOM_TRA_1PNPDE20070116_020528_000000412054_00404_25508_9103.N1	16-JAN-2007 02:05:28	Straylight	40.500	179	24Omi2CMa	3.0320	24000.	81	25508	No
35	GOM_TRA_1PNPDE20070116_020741_000000462054_00404_25508_9104.N1	16-JAN-2007 02:07:41	Straylight	46.000	1	9Alp CMa	-1.4400	11000.	92	25508	No
36	GOM_TRA_1PNPDE20070116_021011_000000412054_00404_25508_9105.N1	16-JAN-2007 02:10:11	Straylight	41.000	56	53Kap Ori	2.0650	30000.	82	25508	No
37	GOM_TRA_1PNPDE20070116_021121_000000402054_00404_25508_9106.N1	16-JAN-2007 02:11:21	Straylight	39.500	125	44Iot Ori	2.7700	30000.	79	25508	No
38	GOM_TRA_1PNPDE20070116_021238_000000432054_00404_25508_9107.N1	16-JAN-2007 02:12:38	Twi_and_stray	42.500	30	46Eps Ori	1.6940	30000.	85	25508	No
39	GOM_TRA_1PNPDE20070116_021451_000000472054_00404_25508_9108.N1	16-JAN-2007 02:14:51	Twi_and_stray	47.000	14	58Alp Ori	0.87000	3000.0	94	25508	No
40	GOM_TRA_1PNPDE20070116_021848_000000362054_00404_25508_9109.N1	16-JAN-2007 02:18:48	Bright	35.500	176	23Zet Tau	3.0200	22000.	71	25508	No
41	GOM_TRA_1PNPDE20070116_022057_000000372054_00404_25508_9110.N1	16-JAN-2007 02:20:57	Bright	37.000	28	12Bet Tau	1.6500	15200.	74	25508	No
42	GOM_TRA_1PNPDE20070116_022233_000000372054_00404_25508_9111.N1	16-JAN-2007 02:22:33	Bright	36.500	114	3Iot Aur	2.6930	4600.0	73	25508	No
43	GOM_TRA_1PNPDE20070116_022524_000000372054_00404_25508_9112.N1	16-JAN-2007 02:25:24	Bright	37.000	42	34Bet Aur	1.9000	10200.	74	25508	No
44	GOM_TRA_1PNPDE20070116_023757_000000372054_00404_25508_9113.N1	16-JAN-2007 02:37:57	Bright	36.500	49	1Alp UMi	1.9900	6300.0	73	25508	No
45	GOM_TRA_1PNPDE20070116_024849_000000352054_00404_25508_9268.N1	16-JAN-2007 02:48:49	Bright	35.000	130	23Bet Dra	2.7990	5800.0	70	25508	No
46	GOM_TRA_1PNPDE20070116_025506_000000362054_00404_25508_9269.N1	16-JAN-2007 02:55:06	Bright	36.000	133	40Zet Her	2.8070	6000.0	72	25508	No
47	GOM_TRA_1PNPDE20070116_025955_000000332054_00404_25508_9270.N1	16-JAN-2007 02:59:55	Bright	32.500	59	55Alp Oph	2.0800	8900.0	65	25508	No
48	GOM_TRA_1PNPDE20070116_030714_000000362054_00404_25508_9271.N1	16-JAN-2007 03:07:14	Bright	36.000	98	13Zet Oph	2.5710	30000.	72	25508	No
49	GOM_TRA_1PNPDE20070116_031141_000000502054_00404_25508_9272.N1	16-JAN-2007 03:11:41	Twi_and_stray	50.000	16	21Alp Sco	1.0200	3000.0	100	25508	No
50	GOM_TRA_1PNPDE20070116_031322_000000412054_00404_25508_9273.N1	16-JAN-2007 03:13:22	Twilight	40.500	75	26Eps Sco	2.2910	4250.0	81	25508	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:	22.0000 %
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:	15.591	21.068	14.604
St. deviation:	5.7800	2.8267	1.3761
Maximum:	23.549	27.022	15.577
Minimum:	4.6658	16.799	13.630
Number of data:	13.000	17.000	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:	0.091492	-0.49757	0.041760	-0.64633
St. deviation:	0.54894	2.5544	0.76883	2.5022
Maximum:	5.0000	6.9000	5.2000	7.5000
Minimum:	-4.1000	-10.000	-4.6000	-9.0000
Number of data:	11450.	11450.	13800.	13800.

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	16-JAN-2007 00:01:35
CALIBRATION_DATABASE	GOM_CAL_AXVIEC20070105_103648_20070104_000000_20100101_000000	1	16-JAN-2007 00:01:35
LEVEL-1B_PROC_CONFIG	GOM_PR1_AXNIEC20050627_151042_20020301_000000_20100101_000000	1	16-JAN-2007 00:01:35
STAR_CATALOGUE	GOM_CAT_AXVIEC20020121_161009_20020101_000000_20200101_000000	1	16-JAN-2007 00:01:35
STELLAR_SPECTRA_DATABANK	GOM_STS_AXNIEC20040308_103538_20020101_160000_20100101_000000	1	16-JAN-2007 00:01:35
ECMWF_FILE	AUX_ECF_AXNECM20070115_062011_20070115_210000_20070116_090000	1	16-JAN-2007 00:01:35
OPTIONAL_ECMWF_FILE	MISSING	1	16-JAN-2007 00:01:35
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20070115_234219_000057382054_00402_25506_2583.N1	1	16-JAN-2007 00:01:35
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20070116_012316_000041442054_00403_25507_2584.N1	45	16-JAN-2007 02:48:49

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