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	13MAY2009 04:40:41
Data source version	GOMOS/5.00
Start time of products	08MAY2009 00:19:47
Stop time of products	08MAY2009 05:42:32
Store outputs in DB	Yes
Nb of level 1b prods	49
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
08-MAY-2009 23:27:57	49DelCap	142	37587

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_1PNPDE20090508_001947_000000472078_00446_37574_5965.N1	08-MAY-2009 00:19:47	Straylight	46.500	40	The Sco	1.8590	7100.0	93	37574	No
2	GOM_TRA_1PNPDE20090508_002138_000000502078_00446_37574_5966.N1	08-MAY-2009 00:21:38	Straylight	50.000	25	35Lam Sco	1.6200	28000.	100	37574	No
3	GOM_TRA_1PNPDE20090508_002422_000000472078_00446_37574_5967.N1	08-MAY-2009 00:24:22	Straylight	46.500	75	26Eps Sco	2.2910	4250.0	93	37574	No
4	GOM_TRA_1PNPDE20090508_002746_000000482078_00446_37574_5968.N1	08-MAY-2009 00:27:46	Twi_and_stray	48.000	16	21Alp Sco	1.0200	3000.0	96	37574	No
5	GOM_TRA_1PNPDE20090508_002944_000000452078_00446_37574_5969.N1	08-MAY-2009 00:29:44	Twi_and_stray	44.500	80	7Del Sco	2.3160	30000.	89	37574	No
6	GOM_TRA_1PNPDE20090508_003440_000000422078_00446_37574_5970.N1	08-MAY-2009 00:34:40	Bright	42.000	104	27Bet Lib	2.6140	13100.	84	37574	No
7	GOM_TRA_1PNPDE20090508_004046_000000522078_00446_37574_5971.N1	08-MAY-2009 00:40:46	Bright	52.000	102	24Alp Ser	2.6000	4250.0	104	37574	No
8	GOM_TRA_1PNPDE20090508_004608_000000402078_00446_37574_5972.N1	08-MAY-2009 00:46:08	Bright	40.000	83		2.3780	11000.	80	37574	No
9	GOM_TRA_1PNPDE20090508_004733_000000462078_00446_37574_5973.N1	08-MAY-2009 00:47:33	Bright	46.000	67	5Alp CrB	2.2210	11000.	92	37574	No
10	GOM_TRA_1PNPDE20090508_005826_000000422078_00446_37574_5974.N1	08-MAY-2009 00:58:26	Bright	41.500	119	14Eta Dra	2.7270	4700.0	83	37574	No
11	GOM_TRA_1PNPDE20090508_010910_000000372078_00446_37574_5975.N1	08-MAY-2009 01:09:10	Bright	37.000	89	5Alp Cep	2.4510	8000.0	74	37574	No
12	GOM_TRA_1PNPDE20090508_012151_000000352078_00446_37574_5976.N1	08-MAY-2009 01:21:51	Twi_and_stray	34.500	93	53Bet Peg	2.5200	3100.0	69	37574	No
13	GOM_TRA_1PNPDE20090508_012606_000000362078_00446_37574_5977.N1	08-MAY-2009 01:26:06	Dark	35.500	90	54Alp Peg	2.4870	11000.	71	37574	No
14	GOM_TRA_1PNPDE20090508_013349_000000502078_00446_37574_6112.N1	08-MAY-2009 01:33:49	Dark	50.000	162	34Alp Aqr	2.9440	5350.0	100	37574	No
15	GOM_TRA_1PNPDE20090508_020024_000000472078_00447_37575_6113.N1	08-MAY-2009 02:00:24	Straylight	47.000	40	The Sco	1.8590	7100.0	94	37575	No
16	GOM_TRA_1PNPDE20090508_020214_000000512078_00447_37575_6114.N1	08-MAY-2009 02:02:14	Straylight	50.500	25	35Lam Sco	1.6200	28000.	101	37575	No
17	GOM_TRA_1PNPDE20090508_020458_000000472078_00447_37575_6115.N1	08-MAY-2009 02:04:58	Straylight	46.500	75	26Eps Sco	2.2910	4250.0	93	37575	No
18	GOM_TRA_1PNPDE20090508_020823_000000482078_00447_37575_6116.N1	08-MAY-2009 02:08:23	Twi_and_stray	48.000	16	21Alp Sco	1.0200	3000.0	96	37575	No
19	GOM_TRA_1PNPDE20090508_021020_000000452078_00447_37575_6117.N1	08-MAY-2009 02:10:20	Bright	44.500	80	7Del Sco	2.3160	30000.	89	37575	No
20	GOM_TRA_1PNPDE20090508_021517_000000422078_00447_37575_6118.N1	08-MAY-2009 02:15:17	Bright	42.000	104	27Bet Lib	2.6140	13100.	84	37575	No
21	GOM_TRA_1PNPDE20090508_022121_000000522078_00447_37575_6119.N1	08-MAY-2009 02:21:21	Bright	51.500	102	24Alp Ser	2.6000	4250.0	103	37575	No
22	GOM_TRA_1PNPDE20090508_022643_000000422078_00447_37575_6120.N1	08-MAY-2009 02:26:43	Bright	42.000	83		2.3780	11000.	84	37575	No
23	GOM_TRA_1PNPDE20090508_022808_000000482078_00447_37575_6121.N1	08-MAY-2009 02:28:08	Bright	48.000	67	5Alp CrB	2.2210	11000.	96	37575	No
24	GOM_TRA_1PNPDE20090508_023901_000000392078_00447_37575_6122.N1	08-MAY-2009 02:39:01	Bright	39.000	119	14Eta Dra	2.7270	4700.0	78	37575	No
25	GOM_TRA_1PNPDE20090508_024946_000000372078_00447_37575_6123.N1	08-MAY-2009 02:49:46	Bright	36.500	89	5Alp Cep	2.4510	8000.0	73	37575	No
26	GOM_TRA_1PNPDE20090508_030227_000000352078_00447_37575_6262.N1	08-MAY-2009 03:02:27	Twi_and_stray	34.500	93	53Bet Peg	2.5200	3100.0	69	37575	No
27	GOM_TRA_1PNPDE20090508_030642_000000362078_00447_37575_6263.N1	08-MAY-2009 03:06:42	Dark	36.000	90	54Alp Peg	2.4870	11000.	72	37575	No
28	GOM_TRA_1PNPDE20090508_031426_000000502078_00447_37575_6264.N1	08-MAY-2009 03:14:26	Dark	50.000	162	34Alp Aqr	2.9440	5350.0	100	37575	No
29	GOM_TRA_1PNPDE20090508_034100_000000472078_00448_37576_6265.N1	08-MAY-2009 03:41:00	Straylight	47.000	40	The Sco	1.8590	7100.0	94	37576	No
30	GOM_TRA_1PNPDE20090508_034251_000000512078_00448_37576_6266.N1	08-MAY-2009 03:42:51	Straylight	50.500	25	35Lam Sco	1.6200	28000.	101	37576	No
31	GOM_TRA_1PNPDE20090508_034534_000000472078_00448_37576_6267.N1	08-MAY-2009 03:45:34	Straylight	47.000	75	26Eps Sco	2.2910	4250.0	94	37576	No
32	GOM_TRA_1PNPDE20090508_034859_000000492078_00448_37576_6268.N1	08-MAY-2009 03:48:59	Twi_and_stray	48.500	16	21Alp Sco	1.0200	3000.0	97	37576	No
33	GOM_TRA_1PNPDE20090508_035056_000000452078_00448_37576_6269.N1	08-MAY-2009 03:50:56	Bright	45.000	80	7Del Sco	2.3160	30000.	90	37576	No
34	GOM_TRA_1PNPDE20090508_035552_000000432078_00448_37576_6270.N1	08-MAY-2009 03:55:52	Bright	42.500	104	27Bet Lib	2.6140	13100.	85	37576	No
35	GOM_TRA_1PNPDE20090508_040157_000000502078_00448_37576_6271.N1	08-MAY-2009 04:01:57	Bright	50.000	102	24Alp Ser	2.6000	4250.0	100	37576	No
36	GOM_TRA_1PNPDE20090508_040719_000000432078_00448_37576_6272.N1	08-MAY-2009 04:07:19	Bright	43.000	83		2.3780	11000.	86	37576	No
37	GOM_TRA_1PNPDE20090508_040844_000000522078_00448_37576_6273.N1	08-MAY-2009 04:08:44	Bright	52.000	67	5Alp CrB	2.2210	11000.	104	37576	No
38	GOM_TRA_1PNPDE20090508_041937_000000422078_00448_37576_6274.N1	08-MAY-2009 04:19:37	Bright	42.000	119	14Eta Dra	2.7270	4700.0	84	37576	No
39	GOM_TRA_1PNPDE20090508_043022_000000382078_00448_37576_6454.N1	08-MAY-2009 04:30:22	Bright	37.500	89	5Alp Cep	2.4510	8000.0	75	37576	No
40	GOM_TRA_1PNPDE20090508_044304_000000352078_00448_37576_6455.N1	08-MAY-2009 04:43:04	Twi_and_stray	34.500	93	53Bet Peg	2.5200	3100.0	69	37576	No
41	GOM_TRA_1PNPDE20090508_044718_000000362078_00448_37576_6456.N1	08-MAY-2009 04:47:18	Dark	36.000	90	54Alp Peg	2.4870	11000.	72	37576	No
42	GOM_TRA_1PNPDE20090508_045503_000000502078_00448_37576_6457.N1	08-MAY-2009 04:55:03	Dark	50.000	162	34Alp Aqr	2.9440	5350.0	100	37576	No
43	GOM_TRA_1PNPDE20090508_052137_000000482078_00449_37577_6458.N1	08-MAY-2009 05:21:37	Straylight	47.500	40	The Sco	1.8590	7100.0	95	37577	No
44	GOM_TRA_1PNPDE20090508_052328_000000512078_00449_37577_6459.N1	08-MAY-2009 05:23:28	Straylight	51.000	25	35Lam Sco	1.6200	28000.	102	37577	No
45	GOM_TRA_1PNPDE20090508_052611_000000472078_00449_37577_6460.N1	08-MAY-2009 05:26:11	Straylight	47.000	75	26Eps Sco	2.2910	4250.0	94	37577	No
46	GOM_TRA_1PNPDE20090508_052936_000000482078_00449_37577_6461.N1	08-MAY-2009 05:29:36	Twi_and_stray	48.000	16	21Alp Sco	1.0200	3000.0	96	37577	No
47	GOM_TRA_1PNPDE20090508_053133_000000452078_00449_37577_6462.N1	08-MAY-2009 05:31:33	Bright	44.500	80	7Del Sco	2.3160	30000.	89	37577	No
48	GOM_TRA_1PNPDE20090508_053628_000000432078_00449_37577_6463.N1	08-MAY-2009 05:36:28	Bright	43.000	104	27Bet Lib	2.6140	13100.	86	37577	No
49	GOM_TRA_1PNPDE20090508_054232_000000512078_00449_37577_6464.N1	08-MAY-2009 05:42:32	Bright	51.000	102	24Alp Ser	2.6000	4250.0	102	37577	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:	30.6122 %
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:	32.877	23.222	NaN
St. deviation:	3.6494	4.9240	NaN
Maximum:	36.372	34.775	NaN
Minimum:	29.305	16.163	NaN
Number of data:	6.0000	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:	0.25063	-0.70269	0.35505	-1.2462
St. deviation:	0.87260	2.8648	0.88175	3.4648
Maximum:	3.7000	9.2000	4.8000	12.700
Minimum:	-3.0000	-10.900	-4.2000	-20.600
Number of data:	7050.0	7050.0	24250.	24250.

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-MAY-2009 00:19:47
CALIBRATION_DATABASE	GOM_CAL_AXVIEC20090430_144945_20090428_000000_20100101_000000	1	08-MAY-2009 00:19:47
LEVEL-1B_PROC_CONFIG	GOM_PR1_AXNIEC20050627_151042_20020301_000000_20100101_000000	1	08-MAY-2009 00:19:47
STAR_CATALOGUE	GOM_CAT_AXVIEC20020121_161009_20020101_000000_20200101_000000	1	08-MAY-2009 00:19:47
STELLAR_SPECTRA_DATABANK	GOM_STS_AXNIEC20040308_103538_20020101_160000_20100101_000000	1	08-MAY-2009 00:19:47
ECMWF_FILE	AUX_ECF_AXNECM20090507_064112_20090507_210000_20090508_090000	1	08-MAY-2009 00:19:47
OPTIONAL_ECMWF_FILE	MISSING	1	08-MAY-2009 00:19:47
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20090507_221026_000057382078_00444_37572_7899.N1	1	08-MAY-2009 00:19:47
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20090507_235123_000057382078_00445_37573_7900.N1	14	08-MAY-2009 01:33:49
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20090508_013220_000041442078_00446_37574_7901.N1	26	08-MAY-2009 03:02:27
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20090508_024643_000057382078_00447_37575_7902.N1	39	08-MAY-2009 04:30:22

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