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	10AUG2007 05:40:56
Data source version	GOMOS/5.00
Start time of products	QDS_YESTERDAY(/START)-1D (08AUG2007 00:00:00)
Stop time of products	QDS_YESTERDAY(/STOP)-1D (09AUG2007 00:00:00)
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
08-AUG-2007 23:33:16	AlpGru	31	28441

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_1PNPDE20070808_000127_000000492060_00317_28427_8270.N1	08-AUG-2007 00:01:27	Straylight	49.000	148	Alp Tuc	2.8780	4100.0	98	28427	No
2	GOM_TRA_1PNPDE20070808_000455_000000432060_00317_28427_8271.N1	08-AUG-2007 00:04:55	Straylight	43.000	31	Alp Gru	1.7340	15200.	86	28427	No
3	GOM_TRA_1PNPDE20070808_002308_000000352060_00317_28427_8272.N1	08-AUG-2007 00:23:08	Bright	35.000	11	53Alp Aql	0.76500	8000.0	70	28427	No
4	GOM_TRA_1PNPDE20070808_002444_000000352060_00317_28427_8273.N1	08-AUG-2007 00:24:44	Bright	34.500	168	17Zet Aql	2.9860	11000.	69	28427	No
5	GOM_TRA_1PNPDE20070808_003151_000000372060_00317_28427_8274.N1	08-AUG-2007 00:31:51	Bright	37.000	5	3Alp Lyr	0.033000	11000.	74	28427	No
6	GOM_TRA_1PNPDE20070808_003331_000000362060_00317_28427_8275.N1	08-AUG-2007 00:33:31	Bright	36.000	144	18Del Cyg	2.8600	11000.	72	28427	No
7	GOM_TRA_1PNPDE20070808_004610_000000342060_00317_28427_8276.N1	08-AUG-2007 00:46:10	Bright	34.000	49	1Alp UMi	1.9900	6300.0	68	28427	No
8	GOM_TRA_1PNPDE20070808_005909_000000542060_00317_28427_8277.N1	08-AUG-2007 00:59:09	Bright	54.000	42	34Bet Aur	1.9000	10200.	108	28427	No
9	GOM_TRA_1PNPDE20070808_010127_000000352060_00317_28427_8278.N1	08-AUG-2007 01:01:27	Bright	35.000	107	37The Aur	2.6490	11000.	70	28427	No
10	GOM_TRA_1PNPDE20070808_011017_000000522060_00317_28427_8279.N1	08-AUG-2007 01:10:17	Dark	51.500	14	58Alp Ori	0.87000	3000.0	103	28427	No
11	GOM_TRA_1PNPDE20070808_011311_000000462060_00317_28427_8280.N1	08-AUG-2007 01:13:11	Dark	46.000	30	46Eps Ori	1.6940	30000.	92	28427	No
12	GOM_TRA_1PNPDE20070808_011516_000000422060_00317_28427_8281.N1	08-AUG-2007 01:15:16	Dark	41.500	56	53Kap Ori	2.0650	30000.	83	28427	No
13	GOM_TRA_1PNPDE20070808_011648_000000412060_00317_28427_8407.N1	08-AUG-2007 01:16:48	Dark	41.000	47	2Bet CMa	1.9760	28000.	82	28427	Yes
14	GOM_TRA_1PNPDE20070808_011850_000000402060_00317_28427_8408.N1	08-AUG-2007 01:18:50	Dark	40.000	139	9Bet Lep	2.8330	5600.0	80	28427	No
15	GOM_TRA_1PNPDE20070808_013538_000000432060_00318_28428_8409.N1	08-AUG-2007 01:35:38	Dark	43.000	9	Alp Eri	0.45300	24000.	86	28428	No
16	GOM_TRA_1PNPDE20070808_014203_000000432060_00318_28428_8410.N1	08-AUG-2007 01:42:03	Straylight	42.500	148	Alp Tuc	2.8780	4100.0	85	28428	No
17	GOM_TRA_1PNPDE20070808_014531_000000432060_00318_28428_8411.N1	08-AUG-2007 01:45:31	Straylight	43.000	31	Alp Gru	1.7340	15200.	86	28428	No
18	GOM_TRA_1PNPDE20070808_020343_000000362060_00318_28428_8412.N1	08-AUG-2007 02:03:43	Bright	36.000	11	53Alp Aql	0.76500	8000.0	72	28428	No
19	GOM_TRA_1PNPDE20070808_020520_000000352060_00318_28428_8413.N1	08-AUG-2007 02:05:20	Bright	35.000	168	17Zet Aql	2.9860	11000.	70	28428	No
20	GOM_TRA_1PNPDE20070808_021227_000000352060_00318_28428_8414.N1	08-AUG-2007 02:12:27	Bright	35.000	5	3Alp Lyr	0.033000	11000.	70	28428	No
21	GOM_TRA_1PNPDE20070808_021407_000000352060_00318_28428_8415.N1	08-AUG-2007 02:14:07	Bright	34.500	144	18Del Cyg	2.8600	11000.	69	28428	No
22	GOM_TRA_1PNPDE20070808_022646_000000362060_00318_28428_8416.N1	08-AUG-2007 02:26:46	Bright	35.500	49	1Alp UMi	1.9900	6300.0	71	28428	No
23	GOM_TRA_1PNPDE20070808_023945_000000372060_00318_28428_8584.N1	08-AUG-2007 02:39:45	Bright	37.000	42	34Bet Aur	1.9000	10200.	74	28428	No
24	GOM_TRA_1PNPDE20070808_024203_000000352060_00318_28428_8585.N1	08-AUG-2007 02:42:03	Bright	35.000	107	37The Aur	2.6490	11000.	70	28428	No
25	GOM_TRA_1PNPDE20070808_025053_000000552060_00318_28428_8586.N1	08-AUG-2007 02:50:53	Dark	55.000	14	58Alp Ori	0.87000	3000.0	110	28428	No
26	GOM_TRA_1PNPDE20070808_025347_000000462060_00318_28428_8587.N1	08-AUG-2007 02:53:47	Dark	46.000	30	46Eps Ori	1.6940	30000.	92	28428	No
27	GOM_TRA_1PNPDE20070808_025552_000000422060_00318_28428_8588.N1	08-AUG-2007 02:55:52	Dark	42.000	56	53Kap Ori	2.0650	30000.	84	28428	No
28	GOM_TRA_1PNPDE20070808_025724_000000422060_00318_28428_8589.N1	08-AUG-2007 02:57:24	Dark	42.000	47	2Bet CMa	1.9760	28000.	84	28428	No
29	GOM_TRA_1PNPDE20070808_025926_000000422060_00318_28428_8590.N1	08-AUG-2007 02:59:26	Dark	42.000	139	9Bet Lep	2.8330	5600.0	84	28428	No
30	GOM_TRA_1PNPDE20070808_031615_000000432060_00319_28429_8591.N1	08-AUG-2007 03:16:15	Dark	43.000	9	Alp Eri	0.45300	24000.	86	28429	No
31	GOM_TRA_1PNPDE20070808_032240_000000392060_00319_28429_8592.N1	08-AUG-2007 03:22:40	Straylight	39.000	148	Alp Tuc	2.8780	4100.0	78	28429	No
32	GOM_TRA_1PNPDE20070808_032608_000000432060_00319_28429_8593.N1	08-AUG-2007 03:26:08	Straylight	43.000	31	Alp Gru	1.7340	15200.	86	28429	No
33	GOM_TRA_1PNPDE20070808_034420_000000362060_00319_28429_8594.N1	08-AUG-2007 03:44:20	Bright	36.000	11	53Alp Aql	0.76500	8000.0	72	28429	No
34	GOM_TRA_1PNPDE20070808_034556_000000352060_00319_28429_8595.N1	08-AUG-2007 03:45:56	Bright	34.500	168	17Zet Aql	2.9860	11000.	69	28429	No
35	GOM_TRA_1PNPDE20070808_035304_000000402060_00319_28429_8596.N1	08-AUG-2007 03:53:04	Bright	40.000	5	3Alp Lyr	0.033000	11000.	80	28429	No
36	GOM_TRA_1PNPDE20070808_035442_000000362060_00319_28429_8597.N1	08-AUG-2007 03:54:42	Bright	36.000	144	18Del Cyg	2.8600	11000.	72	28429	No
37	GOM_TRA_1PNPDE20070808_040722_000000372060_00319_28429_8598.N1	08-AUG-2007 04:07:22	Bright	36.500	49	1Alp UMi	1.9900	6300.0	73	28429	No
38	GOM_TRA_1PNPDE20070808_042021_000000352060_00319_28429_8750.N1	08-AUG-2007 04:20:21	Bright	34.500	42	34Bet Aur	1.9000	10200.	69	28429	No
39	GOM_TRA_1PNPDE20070808_042239_000000352060_00319_28429_8751.N1	08-AUG-2007 04:22:39	Bright	34.500	107	37The Aur	2.6490	11000.	69	28429	No
40	GOM_TRA_1PNPDE20070808_043129_000000482060_00319_28429_8752.N1	08-AUG-2007 04:31:29	Dark	47.500	14	58Alp Ori	0.87000	3000.0	95	28429	No
41	GOM_TRA_1PNPDE20070808_043424_000000462060_00319_28429_8753.N1	08-AUG-2007 04:34:24	Dark	46.000	30	46Eps Ori	1.6940	30000.	92	28429	No
42	GOM_TRA_1PNPDE20070808_043629_000000412060_00319_28429_8754.N1	08-AUG-2007 04:36:29	Dark	41.000	56	53Kap Ori	2.0650	30000.	82	28429	No
43	GOM_TRA_1PNPDE20070808_043800_000000382060_00319_28429_8755.N1	08-AUG-2007 04:38:00	Dark	38.000	47	2Bet CMa	1.9760	28000.	76	28429	No
44	GOM_TRA_1PNPDE20070808_044003_000000442060_00319_28429_8756.N1	08-AUG-2007 04:40:03	Dark	44.000	139	9Bet Lep	2.8330	5600.0	88	28429	No
45	GOM_TRA_1PNPDE20070808_045652_000000412060_00320_28430_8757.N1	08-AUG-2007 04:56:52	Dark	41.000	9	Alp Eri	0.45300	24000.	82	28430	No
46	GOM_TRA_1PNPDE20070808_050316_000000422060_00320_28430_8758.N1	08-AUG-2007 05:03:16	Straylight	41.500	148	Alp Tuc	2.8780	4100.0	83	28430	No
47	GOM_TRA_1PNPDE20070808_050644_000000462060_00320_28430_8759.N1	08-AUG-2007 05:06:44	Straylight	46.000	31	Alp Gru	1.7340	15200.	92	28430	No
48	GOM_TRA_1PNPDE20070808_052456_000000352060_00320_28430_8760.N1	08-AUG-2007 05:24:56	Bright	35.000	11	53Alp Aql	0.76500	8000.0	70	28430	No
49	GOM_TRA_1PNPDE20070808_052632_000000362060_00320_28430_8761.N1	08-AUG-2007 05:26:32	Bright	35.500	168	17Zet Aql	2.9860	11000.	71	28430	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:	16.6667 %
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:	13.656	21.336	NaN
St. deviation:	4.1416	4.6659	NaN
Maximum:	20.641	26.760	NaN
Minimum:	4.5894	4.0806	NaN
Number of data:	17.000	23.000	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:	0.11121	-1.3629	0.068895	-1.2855
St. deviation:	0.51300	2.6829	0.88783	3.1674
Maximum:	5.1000	10.100	6.7000	11.900
Minimum:	-7.5000	-10.200	-5.4000	-13.800
Number of data:	15750.	15750.	18700.	18700.

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	08-AUG-2007 00:01:27
CALIBRATION_DATABASE	GOM_CAL_AXVIEC20070803_145735_20070802_000000_20100101_000000	1	08-AUG-2007 00:01:27
LEVEL-1B_PROC_CONFIG	GOM_PR1_AXNIEC20050627_151042_20020301_000000_20100101_000000	1	08-AUG-2007 00:01:27
STAR_CATALOGUE	GOM_CAT_AXVIEC20020121_161009_20020101_000000_20200101_000000	1	08-AUG-2007 00:01:27
STELLAR_SPECTRA_DATABANK	GOM_STS_AXNIEC20040308_103538_20020101_160000_20100101_000000	1	08-AUG-2007 00:01:27
ECMWF_FILE	AUX_ECF_AXNECM20070807_061112_20070807_210000_20070808_090000	1	08-AUG-2007 00:01:27
ECMWF_FILE	AUX_ECF_AXNECM20070807_181111_20070808_030000_20070808_150000	38	08-AUG-2007 04:20:21
OPTIONAL_ECMWF_FILE	MISSING	1	08-AUG-2007 00:01:27
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20070807_215115_000060572060_00315_28425_3923.N1	1	08-AUG-2007 00:01:27
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20070807_233212_000057382060_00316_28426_3924.N1	13	08-AUG-2007 01:16:48
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20070808_022732_000057382060_00318_28428_3926.N1	23	08-AUG-2007 02:39:45

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