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	16JAN2009 05:39:01
Data source version	GOMOS/5.00
Start time of products	13JAN2009 00:02:16
Stop time of products	13JAN2009 02:27:38
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
13-JAN-2009 00:15:29	GamLup	131	35927
13-JAN-2009 23:43:59	GamLup	131	35941

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_1PNPDE20090113_000216_000000602075_00302_35927_4568.N1	13-JAN-2009 00:02:16	Bright	60.000	102	24Alp Ser	2.6000	4250.0	120	35927	No
2	GOM_TRA_1PNPDE20090113_000426_000000392075_00302_35927_4569.N1	13-JAN-2009 00:04:26	Bright	38.500	120	1Del Oph	2.7340	3200.0	77	35927	No
3	GOM_TRA_1PNPDE20090113_000550_000000452075_00302_35927_4570.N1	13-JAN-2009 00:05:50	Bright	44.500	98	13Zet Oph	2.5710	30000.	89	35927	No
4	GOM_TRA_1PNPDE20090113_000756_000000492075_00302_35927_4571.N1	13-JAN-2009 00:07:56	Twi_and_stray	48.500	104	27Bet Lib	2.6140	13100.	97	35927	No
5	GOM_TRA_1PNPDE20090113_001017_000000482075_00302_35927_4687.N1	13-JAN-2009 00:10:17	Twi_and_stray	47.500	16	21Alp Sco	1.0200	3000.0	95	35927	No
6	GOM_TRA_1PNPDE20090113_001753_000000402075_00302_35927_4688.N1	13-JAN-2009 00:17:53	Dark	40.000	81	Eta Cen	2.3560	28000.	80	35927	No
7	GOM_TRA_1PNPDE20090113_002121_000000532075_00303_35928_4689.N1	13-JAN-2009 00:21:21	Dark	53.000	4	Alp1Cen	-0.010000	5800.0	106	35928	No
8	GOM_TRA_1PNPDE20090113_002540_000000412075_00303_35928_4690.N1	13-JAN-2009 00:25:40	Dark	40.500	12	Alp1Cru	0.77500	30000.	81	35928	No
9	GOM_TRA_1PNPDE20090113_002857_000000402075_00303_35928_4691.N1	13-JAN-2009 00:28:57	Dark	39.500	124	The Car	2.7640	30000.	79	35928	No
10	GOM_TRA_1PNPDE20090113_003024_000000442075_00303_35928_4692.N1	13-JAN-2009 00:30:24	Dark	44.000	29	Bet Car	1.6720	10200.	88	35928	No
11	GOM_TRA_1PNPDE20090113_003216_000000442075_00303_35928_4693.N1	13-JAN-2009 00:32:16	Dark	43.500	71	Iot Car	2.2460	7700.0	87	35928	No
12	GOM_TRA_1PNPDE20090113_003334_000000492075_00303_35928_4694.N1	13-JAN-2009 00:33:34	Dark	48.500	41	Eps Car	1.8600	4100.0	97	35928	No
13	GOM_TRA_1PNPDE20090113_003653_000000412075_00303_35928_4695.N1	13-JAN-2009 00:36:53	Dark	41.000	34	Gam2Vel	1.7930	23000.	82	35928	No
14	GOM_TRA_1PNPDE20090113_003902_000000442075_00303_35928_4696.N1	13-JAN-2009 00:39:02	Dark	44.000	70	Zet Pup	2.2460	39000.	88	35928	No
15	GOM_TRA_1PNPDE20090113_004046_000000452075_00303_35928_4697.N1	13-JAN-2009 00:40:46	Straylight	45.000	117	Pi Pup	2.7060	3800.0	90	35928	No
16	GOM_TRA_1PNPDE20090113_004321_000000442075_00303_35928_4698.N1	13-JAN-2009 00:43:21	Straylight	44.000	23	21Eps CMa	1.5020	26000.	88	35928	No
17	GOM_TRA_1PNPDE20090113_004447_000000412075_00303_35928_4699.N1	13-JAN-2009 00:44:47	Straylight	40.500	179	24Omi2CMa	3.0320	24000.	81	35928	No
18	GOM_TRA_1PNPDE20090113_004702_000000462075_00303_35928_4700.N1	13-JAN-2009 00:47:02	Straylight	45.500	1	9Alp CMa	-1.4400	11000.	91	35928	No
19	GOM_TRA_1PNPDE20090113_005413_000000492075_00303_35928_4701.N1	13-JAN-2009 00:54:13	Twi_and_stray	48.500	14	58Alp Ori	0.87000	3000.0	97	35928	No
20	GOM_TRA_1PNPDE20090113_005649_000000442075_00303_35928_4702.N1	13-JAN-2009 00:56:49	Bright	43.500	44	24Gam Gem	1.9280	11000.	87	35928	No
21	GOM_TRA_1PNPDE20090113_005809_000000362075_00303_35928_4703.N1	13-JAN-2009 00:58:09	Bright	36.000	176	23Zet Tau	3.0200	22000.	72	35928	No
22	GOM_TRA_1PNPDE20090113_005928_000000432075_00303_35928_4704.N1	13-JAN-2009 00:59:28	Bright	43.000	170	27Eps Gem	3.0000	9700.0	86	35928	No
23	GOM_TRA_1PNPDE20090113_010239_000000382075_00303_35928_4705.N1	13-JAN-2009 01:02:39	Bright	37.500	107	37The Aur	2.6490	11000.	75	35928	No
24	GOM_TRA_1PNPDE20090113_010451_000000392075_00303_35928_4706.N1	13-JAN-2009 01:04:51	Bright	38.500	42	34Bet Aur	1.9000	10200.	77	35928	No
25	GOM_TRA_1PNPDE20090113_011722_000000342075_00303_35928_4707.N1	13-JAN-2009 01:17:22	Bright	33.500	49	1Alp UMi	1.9900	6300.0	67	35928	No
26	GOM_TRA_1PNPDE20090113_012125_000000412075_00303_35928_4708.N1	13-JAN-2009 01:21:25	Bright	40.500	60	7Bet UMi	2.0810	3950.0	81	35928	No
27	GOM_TRA_1PNPDE20090113_012541_000000382075_00303_35928_4709.N1	13-JAN-2009 01:25:41	Bright	37.500	119	14Eta Dra	2.7270	4700.0	75	35928	No
28	GOM_TRA_1PNPDE20090113_012811_000000372075_00303_35928_4710.N1	13-JAN-2009 01:28:11	Bright	36.500	130	23Bet Dra	2.7990	5800.0	73	35928	No
29	GOM_TRA_1PNPDE20090113_013426_000000542075_00303_35928_4711.N1	13-JAN-2009 01:34:26	Bright	54.000	133	40Zet Her	2.8070	6000.0	108	35928	No
30	GOM_TRA_1PNPDE20090113_013637_000000542075_00303_35928_4712.N1	13-JAN-2009 01:36:37	Bright	54.000	67	5Alp CrB	2.2210	11000.	108	35928	No
31	GOM_TRA_1PNPDE20090113_014253_000000602075_00303_35928_4713.N1	13-JAN-2009 01:42:53	Bright	60.000	102	24Alp Ser	2.6000	4250.0	120	35928	No
32	GOM_TRA_1PNPDE20090113_014502_000000552075_00303_35928_4849.N1	13-JAN-2009 01:45:02	Bright	55.000	120	1Del Oph	2.7340	3200.0	110	35928	Yes
33	GOM_TRA_1PNPDE20090113_014626_000000352075_00303_35928_4850.N1	13-JAN-2009 01:46:26	Bright	35.000	98	13Zet Oph	2.5710	30000.	70	35928	No
34	GOM_TRA_1PNPDE20090113_014833_000000482075_00303_35928_4851.N1	13-JAN-2009 01:48:33	Twi_and_stray	47.500	104	27Bet Lib	2.6140	13100.	95	35928	No
35	GOM_TRA_1PNPDE20090113_015054_000000512075_00303_35928_4852.N1	13-JAN-2009 01:50:54	Twi_and_stray	51.000	16	21Alp Sco	1.0200	3000.0	102	35928	No
36	GOM_TRA_1PNPDE20090113_015604_000000382075_00303_35928_4853.N1	13-JAN-2009 01:56:04	Dark	37.500	131	Gam Lup	2.8000	26000.	75	35928	No
37	GOM_TRA_1PNPDE20090113_015829_000000442075_00303_35928_4854.N1	13-JAN-2009 01:58:29	Dark	44.000	81	Eta Cen	2.3560	28000.	88	35928	No
38	GOM_TRA_1PNPDE20090113_020157_000000422075_00304_35929_4855.N1	13-JAN-2009 02:01:57	Dark	42.000	4	Alp1Cen	-0.010000	5800.0	84	35929	No
39	GOM_TRA_1PNPDE20090113_020616_000000412075_00304_35929_4856.N1	13-JAN-2009 02:06:16	Dark	41.000	12	Alp1Cru	0.77500	30000.	82	35929	No
40	GOM_TRA_1PNPDE20090113_020933_000000402075_00304_35929_4857.N1	13-JAN-2009 02:09:33	Dark	39.500	124	The Car	2.7640	30000.	79	35929	No
41	GOM_TRA_1PNPDE20090113_021101_000000472075_00304_35929_4858.N1	13-JAN-2009 02:11:01	Dark	47.000	29	Bet Car	1.6720	10200.	94	35929	No
42	GOM_TRA_1PNPDE20090113_021252_000000442075_00304_35929_4859.N1	13-JAN-2009 02:12:52	Dark	44.000	71	Iot Car	2.2460	7700.0	88	35929	No
43	GOM_TRA_1PNPDE20090113_021410_000000462075_00304_35929_4860.N1	13-JAN-2009 02:14:10	Dark	45.500	41	Eps Car	1.8600	4100.0	91	35929	No
44	GOM_TRA_1PNPDE20090113_021729_000000472075_00304_35929_4861.N1	13-JAN-2009 02:17:29	Dark	46.500	34	Gam2Vel	1.7930	23000.	93	35929	No
45	GOM_TRA_1PNPDE20090113_021939_000000472075_00304_35929_4862.N1	13-JAN-2009 02:19:39	Dark	46.500	70	Zet Pup	2.2460	39000.	93	35929	No
46	GOM_TRA_1PNPDE20090113_022122_000000412075_00304_35929_4863.N1	13-JAN-2009 02:21:22	Straylight	41.000	117	Pi Pup	2.7060	3800.0	82	35929	No
47	GOM_TRA_1PNPDE20090113_022357_000000442075_00304_35929_4864.N1	13-JAN-2009 02:23:57	Straylight	44.000	23	21Eps CMa	1.5020	26000.	88	35929	No
48	GOM_TRA_1PNPDE20090113_022523_000000422075_00304_35929_4865.N1	13-JAN-2009 02:25:23	Straylight	41.500	179	24Omi2CMa	3.0320	24000.	83	35929	No
49	GOM_TRA_1PNPDE20090113_022738_000000492075_00304_35929_4866.N1	13-JAN-2009 02:27:38	Straylight	49.000	1	9Alp CMa	-1.4400	11000.	98	35929	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 These products did not use the DSA observation for DC computation:

Product name	DC information
GOM_TRA_1PNPDE20090113_000216_000000602075_00302_35927_4568.N1	DC map used
GOM_TRA_1PNPDE20090113_000426_000000392075_00302_35927_4569.N1	DC map used
GOM_TRA_1PNPDE20090113_000550_000000452075_00302_35927_4570.N1	DC map used
GOM_TRA_1PNPDE20090113_000756_000000492075_00302_35927_4571.N1	DC map used
GOM_TRA_1PNPDE20090113_001017_000000482075_00302_35927_4687.N1	DC map used
GOM_TRA_1PNPDE20090113_001753_000000402075_00302_35927_4688.N1	DC map used
GOM_TRA_1PNPDE20090113_002121_000000532075_00303_35928_4689.N1	DC map used
GOM_TRA_1PNPDE20090113_002540_000000412075_00303_35928_4690.N1	DC map used
GOM_TRA_1PNPDE20090113_002857_000000402075_00303_35928_4691.N1	DC map used
GOM_TRA_1PNPDE20090113_003024_000000442075_00303_35928_4692.N1	DC map used
GOM_TRA_1PNPDE20090113_003216_000000442075_00303_35928_4693.N1	DC map used
GOM_TRA_1PNPDE20090113_003334_000000492075_00303_35928_4694.N1	DC map used
GOM_TRA_1PNPDE20090113_003653_000000412075_00303_35928_4695.N1	DC map used
GOM_TRA_1PNPDE20090113_003902_000000442075_00303_35928_4696.N1	DC map used
GOM_TRA_1PNPDE20090113_004046_000000452075_00303_35928_4697.N1	DC map used
GOM_TRA_1PNPDE20090113_004321_000000442075_00303_35928_4698.N1	DC map used
GOM_TRA_1PNPDE20090113_004447_000000412075_00303_35928_4699.N1	DC map used
GOM_TRA_1PNPDE20090113_004702_000000462075_00303_35928_4700.N1	DC map used
GOM_TRA_1PNPDE20090113_005413_000000492075_00303_35928_4701.N1	DC map used
GOM_TRA_1PNPDE20090113_005649_000000442075_00303_35928_4702.N1	DC map used
GOM_TRA_1PNPDE20090113_005809_000000362075_00303_35928_4703.N1	DC map used
GOM_TRA_1PNPDE20090113_005928_000000432075_00303_35928_4704.N1	DC map used
GOM_TRA_1PNPDE20090113_010239_000000382075_00303_35928_4705.N1	DC map used
GOM_TRA_1PNPDE20090113_010451_000000392075_00303_35928_4706.N1	DC map used
GOM_TRA_1PNPDE20090113_011722_000000342075_00303_35928_4707.N1	DC map used
GOM_TRA_1PNPDE20090113_012125_000000412075_00303_35928_4708.N1	DC map used
GOM_TRA_1PNPDE20090113_012541_000000382075_00303_35928_4709.N1	DC map used
GOM_TRA_1PNPDE20090113_012811_000000372075_00303_35928_4710.N1	DC map used
GOM_TRA_1PNPDE20090113_013426_000000542075_00303_35928_4711.N1	DC map used
GOM_TRA_1PNPDE20090113_013637_000000542075_00303_35928_4712.N1	DC map used
GOM_TRA_1PNPDE20090113_014253_000000602075_00303_35928_4713.N1	DC map used

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:	35.4167 %
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:	14.170	15.152	NaN
St. deviation:	4.8102	7.0534	NaN
Maximum:	21.481	27.006	NaN
Minimum:	3.8083	4.1506	NaN
Number of data:	19.000	16.000	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:	0.14134	0.76277	0.14159	0.46484
St. deviation:	0.69883	6.4048	0.81646	6.9818
Maximum:	5.2000	21.100	4.8000	19.800
Minimum:	-10.900	-23.400	-5.6000	-27.900
Number of data:	17600.	17600.	14250.	14250.

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	13-JAN-2009 00:02:16
CALIBRATION_DATABASE	GOM_CAL_AXVIEC20081229_162214_20081227_000000_20100101_000000	1	13-JAN-2009 00:02:16
LEVEL-1B_PROC_CONFIG	GOM_PR1_AXNIEC20050627_151042_20020301_000000_20100101_000000	1	13-JAN-2009 00:02:16
STAR_CATALOGUE	GOM_CAT_AXVIEC20020121_161009_20020101_000000_20200101_000000	1	13-JAN-2009 00:02:16
STELLAR_SPECTRA_DATABANK	GOM_STS_AXNIEC20040308_103538_20020101_160000_20100101_000000	1	13-JAN-2009 00:02:16
ECMWF_FILE	AUX_ECF_AXNECM20090112_064111_20090112_210000_20090113_090000	1	13-JAN-2009 00:02:16
OPTIONAL_ECMWF_FILE	MISSING	1	13-JAN-2009 00:02:16
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20090112_204134_000057382075_00300_35925_7149.N1	1	13-JAN-2009 00:02:16
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20090112_222231_000060572075_00301_35926_7150.N1	5	13-JAN-2009 00:10:17
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20090113_000847_000054192075_00302_35927_7151.N1	32	13-JAN-2009 01:45:02

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Last modified:
24-Apr-2008