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	25JUN2007 07:48:19
Data source version	GOMOS/5.00
Start time of products	21-06-2007 (21JUN2007 00:00:00)
Stop time of products	22-06-2007 (22JUN2007 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_1PNPDE20070621_000211_000000382059_00131_27740_6700.N1	21-JUN-2007 00:02:11	Dark	37.500	135	Bet Hyi	2.8200	5800.0	75	27740	No
2	GOM_TRA_1PNPDE20070621_001312_000000412059_00131_27740_6701.N1	21-JUN-2007 00:13:12	Straylight	40.500	141	Bet Ara	2.8400	4600.0	81	27740	No
3	GOM_TRA_1PNPDE20070621_001436_000000402059_00131_27740_6702.N1	21-JUN-2007 00:14:36	Straylight	39.500	147	Alp Ara	2.8770	26000.	79	27740	No
4	GOM_TRA_1PNPDE20070621_001622_000000412059_00131_27740_6703.N1	21-JUN-2007 00:16:22	Twi_and_stray	40.500	40	The Sco	1.8590	7100.0	81	27740	No
5	GOM_TRA_1PNPDE20070621_001804_000000422059_00131_27740_6704.N1	21-JUN-2007 00:18:04	Twi_and_stray	41.500	25	35Lam Sco	1.6200	28000.	83	27740	No
6	GOM_TRA_1PNPDE20070621_001927_000000522059_00131_27740_6705.N1	21-JUN-2007 00:19:27	Bright	52.000	75	26Eps Sco	2.2910	4250.0	104	27740	No
7	GOM_TRA_1PNPDE20070621_002210_000000362059_00131_27740_6706.N1	21-JUN-2007 00:22:10	Bright	36.000	156	20Sig Sco	2.9030	28000.	72	27740	No
8	GOM_TRA_1PNPDE20070621_002429_000000382059_00131_27740_6707.N1	21-JUN-2007 00:24:29	Bright	37.500	86	35Eta Oph	2.4300	10200.	75	27740	No
9	GOM_TRA_1PNPDE20070621_002613_000000372059_00131_27740_6708.N1	21-JUN-2007 00:26:13	Bright	36.500	98	13Zet Oph	2.5710	30000.	73	27740	No
10	GOM_TRA_1PNPDE20070621_002819_000000362059_00131_27740_6709.N1	21-JUN-2007 00:28:19	Bright	36.000	120	1Del Oph	2.7340	3200.0	72	27740	No
11	GOM_TRA_1PNPDE20070621_003125_000000352059_00131_27740_6710.N1	21-JUN-2007 00:31:25	Bright	34.500	102	24Alp Ser	2.6000	4250.0	69	27740	No
12	GOM_TRA_1PNPDE20070621_003521_000000372059_00131_27740_6711.N1	21-JUN-2007 00:35:21	Bright	36.500	127	27Bet Her	2.7810	4700.0	73	27740	No
13	GOM_TRA_1PNPDE20070621_003706_000000362059_00131_27740_6712.N1	21-JUN-2007 00:37:06	Bright	36.000	67	5Alp CrB	2.2210	11000.	72	27740	No
14	GOM_TRA_1PNPDE20070621_004642_000000352059_00131_27740_6713.N1	21-JUN-2007 00:46:42	Bright	35.000	119	14Eta Dra	2.7270	4700.0	70	27740	No
15	GOM_TRA_1PNPDE20070621_005022_000000372059_00131_27740_6714.N1	21-JUN-2007 00:50:22	Bright	36.500	60	7Bet UMi	2.0810	3950.0	73	27740	No
16	GOM_TRA_1PNPDE20070621_005453_000000332059_00131_27740_6715.N1	21-JUN-2007 00:54:53	Bright	33.000	49	1Alp UMi	1.9900	6300.0	66	27740	No
17	GOM_TRA_1PNPDE20070621_010512_000000352059_00131_27740_6716.N1	21-JUN-2007 01:05:12	Bright	34.500	160	23Gam Per	2.9300	4700.0	69	27740	No
18	GOM_TRA_1PNPDE20070621_011932_000000362059_00131_27740_6717.N1	21-JUN-2007 01:19:32	Dark	35.500	94	92Alp Cet	2.5260	3100.0	71	27740	No
19	GOM_TRA_1PNPDE20070621_013733_000000382059_00131_27740_6830.N1	21-JUN-2007 01:37:33	Dark	38.000	9	Alp Eri	0.45300	24000.	76	27740	No
20	GOM_TRA_1PNPDE20070621_014247_000000362059_00132_27741_6831.N1	21-JUN-2007 01:42:47	Dark	35.500	135	Bet Hyi	2.8200	5800.0	71	27741	No
21	GOM_TRA_1PNPDE20070621_015349_000000392059_00132_27741_6832.N1	21-JUN-2007 01:53:49	Straylight	38.500	141	Bet Ara	2.8400	4600.0	77	27741	No
22	GOM_TRA_1PNPDE20070621_015512_000000392059_00132_27741_6833.N1	21-JUN-2007 01:55:12	Straylight	38.500	147	Alp Ara	2.8770	26000.	77	27741	No
23	GOM_TRA_1PNPDE20070621_015658_000000422059_00132_27741_6834.N1	21-JUN-2007 01:56:58	Twi_and_stray	42.000	40	The Sco	1.8590	7100.0	84	27741	No
24	GOM_TRA_1PNPDE20070621_015840_000000402059_00132_27741_6835.N1	21-JUN-2007 01:58:40	Twi_and_stray	40.000	25	35Lam Sco	1.6200	28000.	80	27741	No
25	GOM_TRA_1PNPDE20070621_020003_000000402059_00132_27741_6836.N1	21-JUN-2007 02:00:03	Bright	39.500	75	26Eps Sco	2.2910	4250.0	79	27741	No
26	GOM_TRA_1PNPDE20070621_020246_000000372059_00132_27741_6837.N1	21-JUN-2007 02:02:46	Bright	36.500	156	20Sig Sco	2.9030	28000.	73	27741	No
27	GOM_TRA_1PNPDE20070621_020505_000000382059_00132_27741_6838.N1	21-JUN-2007 02:05:05	Bright	38.000	86	35Eta Oph	2.4300	10200.	76	27741	No
28	GOM_TRA_1PNPDE20070621_020649_000000372059_00132_27741_6839.N1	21-JUN-2007 02:06:49	Bright	36.500	98	13Zet Oph	2.5710	30000.	73	27741	No
29	GOM_TRA_1PNPDE20070621_020855_000000362059_00132_27741_6840.N1	21-JUN-2007 02:08:55	Bright	35.500	120	1Del Oph	2.7340	3200.0	71	27741	No
30	GOM_TRA_1PNPDE20070621_021201_000000352059_00132_27741_6841.N1	21-JUN-2007 02:12:01	Bright	35.000	102	24Alp Ser	2.6000	4250.0	70	27741	No
31	GOM_TRA_1PNPDE20070621_021557_000000362059_00132_27741_6842.N1	21-JUN-2007 02:15:57	Bright	36.000	127	27Bet Her	2.7810	4700.0	72	27741	No
32	GOM_TRA_1PNPDE20070621_021742_000000362059_00132_27741_6843.N1	21-JUN-2007 02:17:42	Bright	36.000	67	5Alp CrB	2.2210	11000.	72	27741	No
33	GOM_TRA_1PNPDE20070621_022718_000000352059_00132_27741_6844.N1	21-JUN-2007 02:27:18	Bright	34.500	119	14Eta Dra	2.7270	4700.0	69	27741	No
34	GOM_TRA_1PNPDE20070621_023058_000000372059_00132_27741_6845.N1	21-JUN-2007 02:30:58	Bright	36.500	60	7Bet UMi	2.0810	3950.0	73	27741	No
35	GOM_TRA_1PNPDE20070621_023529_000000342059_00132_27741_6846.N1	21-JUN-2007 02:35:29	Bright	34.000	49	1Alp UMi	1.9900	6300.0	68	27741	No
36	GOM_TRA_1PNPDE20070621_024548_000000532059_00132_27741_7008.N1	21-JUN-2007 02:45:48	Bright	53.000	160	23Gam Per	2.9300	4700.0	106	27741	No
37	GOM_TRA_1PNPDE20070621_030008_000000462059_00132_27741_7009.N1	21-JUN-2007 03:00:08	Dark	45.500	94	92Alp Cet	2.5260	3100.0	91	27741	No
38	GOM_TRA_1PNPDE20070621_031810_000000442059_00132_27741_7010.N1	21-JUN-2007 03:18:10	Dark	44.000	9	Alp Eri	0.45300	24000.	88	27741	No
39	GOM_TRA_1PNPDE20070621_032323_000000352059_00133_27742_7011.N1	21-JUN-2007 03:23:23	Dark	35.000	135	Bet Hyi	2.8200	5800.0	70	27742	No
40	GOM_TRA_1PNPDE20070621_033425_000000382059_00133_27742_7012.N1	21-JUN-2007 03:34:25	Straylight	38.000	141	Bet Ara	2.8400	4600.0	76	27742	No
41	GOM_TRA_1PNPDE20070621_033549_000000392059_00133_27742_7013.N1	21-JUN-2007 03:35:49	Straylight	38.500	147	Alp Ara	2.8770	26000.	77	27742	No
42	GOM_TRA_1PNPDE20070621_033735_000000402059_00133_27742_7014.N1	21-JUN-2007 03:37:35	Twi_and_stray	39.500	40	The Sco	1.8590	7100.0	79	27742	No
43	GOM_TRA_1PNPDE20070621_033916_000000432059_00133_27742_7015.N1	21-JUN-2007 03:39:16	Twi_and_stray	42.500	25	35Lam Sco	1.6200	28000.	85	27742	No
44	GOM_TRA_1PNPDE20070621_034039_000000522059_00133_27742_7016.N1	21-JUN-2007 03:40:39	Bright	52.000	75	26Eps Sco	2.2910	4250.0	104	27742	No
45	GOM_TRA_1PNPDE20070621_034323_000000372059_00133_27742_7017.N1	21-JUN-2007 03:43:23	Bright	36.500	156	20Sig Sco	2.9030	28000.	73	27742	No
46	GOM_TRA_1PNPDE20070621_034542_000000382059_00133_27742_7018.N1	21-JUN-2007 03:45:42	Bright	38.000	86	35Eta Oph	2.4300	10200.	76	27742	No
47	GOM_TRA_1PNPDE20070621_034725_000000362059_00133_27742_7019.N1	21-JUN-2007 03:47:25	Bright	36.000	98	13Zet Oph	2.5710	30000.	72	27742	No
48	GOM_TRA_1PNPDE20070621_034931_000000362059_00133_27742_7020.N1	21-JUN-2007 03:49:31	Bright	36.000	120	1Del Oph	2.7340	3200.0	72	27742	No
49	GOM_TRA_1PNPDE20070621_035237_000000372059_00133_27742_7021.N1	21-JUN-2007 03:52:37	Bright	36.500	102	24Alp Ser	2.6000	4250.0	73	27742	No
50	GOM_TRA_1PNPDE20070621_035633_000000352059_00133_27742_7022.N1	21-JUN-2007 03:56:33	Bright	35.000	127	27Bet Her	2.7810	4700.0	70	27742	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:	12.0000 %
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:	18.141	19.199	NaN
St. deviation:	5.2970	5.4930	NaN
Maximum:	23.292	27.362	NaN
Minimum:	10.303	3.9572	NaN
Number of data:	7.0000	31.000	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:	-0.035952	-1.2914	0.063485	-1.1060
St. deviation:	0.44614	2.0158	0.74313	2.3132
Maximum:	2.5000	5.3000	4.5000	8.5000
Minimum:	-2.6000	-7.1000	-3.9000	-8.1000
Number of data:	6150.0	6150.0	25550.	25550.

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	21-JUN-2007 00:02:11
CALIBRATION_DATABASE	GOM_CAL_AXVIEC20070618_075311_20070617_000000_20100101_000000	1	21-JUN-2007 00:02:11
LEVEL-1B_PROC_CONFIG	GOM_PR1_AXNIEC20050627_151042_20020301_000000_20100101_000000	1	21-JUN-2007 00:02:11
STAR_CATALOGUE	GOM_CAT_AXVIEC20020121_161009_20020101_000000_20200101_000000	1	21-JUN-2007 00:02:11
STELLAR_SPECTRA_DATABANK	GOM_STS_AXNIEC20040308_103538_20020101_160000_20100101_000000	1	21-JUN-2007 00:02:11
ECMWF_FILE	AUX_ECF_AXNECM20070620_062114_20070620_210000_20070621_090000	1	21-JUN-2007 00:02:11
OPTIONAL_ECMWF_FILE	MISSING	1	21-JUN-2007 00:02:11
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20070620_215916_000057382059_00129_27738_3618.N1	1	21-JUN-2007 00:02:11
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20070620_234013_000057382059_00130_27739_3619.N1	19	21-JUN-2007 01:37:33
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20070621_012110_000041442059_00131_27740_3620.N1	36	21-JUN-2007 02:45:48

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