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	12OCT2008 05:34:42
Data source version	GOMOS/5.00
Start time of products	10OCT2008 00:02:03
Stop time of products	10OCT2008 03:43:53
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)

UTC start time	Star name	Star ID	Orbit
10-OCT-2008 12:47:16	1AlpUMi	49	34575

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_1PNPDE20081010_000203_000000422072_00445_34567_6589.N1	10-OCT-2008 00:02:03	Dark	41.500	65	Lam Vel	2.2040	4400.0	83	34567	No
2	GOM_TRA_1PNPDE20081010_000501_000000412072_00445_34567_6590.N1	10-OCT-2008 00:05:01	Dark	41.000	34	Gam2Vel	1.7930	23000.	82	34567	No
3	GOM_TRA_1PNPDE20081010_000650_000000492072_00446_34568_6591.N1	10-OCT-2008 00:06:50	Dark	49.000	41	Eps Car	1.8600	4100.0	98	34568	No
4	GOM_TRA_1PNPDE20081010_000909_000000452072_00446_34568_6592.N1	10-OCT-2008 00:09:09	Dark	45.000	161	Tau Pup	2.9310	4500.0	90	34568	No
5	GOM_TRA_1PNPDE20081010_001032_000000592072_00446_34568_6593.N1	10-OCT-2008 00:10:32	Dark	59.000	2	Alp Car	-0.73600	7000.0	118	34568	No
6	GOM_TRA_1PNPDE20081010_001857_000000382072_00446_34568_6594.N1	10-OCT-2008 00:18:57	Dark	38.000	143	Alp Hyi	2.8570	7200.0	76	34568	No
7	GOM_TRA_1PNPDE20081010_002024_000000392072_00446_34568_6595.N1	10-OCT-2008 00:20:24	Dark	38.500	9	Alp Eri	0.45300	24000.	77	34568	No
8	GOM_TRA_1PNPDE20081010_002240_000000472072_00446_34568_6596.N1	10-OCT-2008 00:22:40	Straylight	46.500	157	The1Eri	2.9060	9300.0	93	34568	No
9	GOM_TRA_1PNPDE20081010_003214_000000452072_00446_34568_6597.N1	10-OCT-2008 00:32:14	Straylight	44.500	52	16Bet Cet	2.0370	4500.0	89	34568	No
10	GOM_TRA_1PNPDE20081010_004205_000000362072_00446_34568_6598.N1	10-OCT-2008 00:42:05	Bright	36.000	140	88Gam Peg	2.8340	26000.	72	34568	No
11	GOM_TRA_1PNPDE20081010_004607_000000372072_00446_34568_6599.N1	10-OCT-2008 00:46:07	Bright	37.000	58	21Alp And	2.0730	11000.	74	34568	No
12	GOM_TRA_1PNPDE20081010_004903_000000422072_00446_34568_6600.N1	10-OCT-2008 00:49:03	Bright	42.000	53	43Bet And	2.0480	3300.0	84	34568	No
13	GOM_TRA_1PNPDE20081010_005421_000000382072_00446_34568_6601.N1	10-OCT-2008 00:54:21	Bright	38.000	68	18Alp Cas	2.2250	4500.0	76	34568	No
14	GOM_TRA_1PNPDE20081010_005545_000000392072_00446_34568_6602.N1	10-OCT-2008 00:55:45	Bright	38.500	76	27Gam Cas	2.3000	30000.	77	34568	No
15	GOM_TRA_1PNPDE20081010_010305_000000342072_00446_34568_6603.N1	10-OCT-2008 01:03:05	Bright	34.000	49	1Alp UMi	1.9900	6300.0	68	34568	No
16	GOM_TRA_1PNPDE20081010_011114_000000372072_00446_34568_6604.N1	10-OCT-2008 01:11:14	Bright	37.000	36	50Alp UMa	1.8000	6300.0	74	34568	No
17	GOM_TRA_1PNPDE20081010_011246_000000352072_00446_34568_6605.N1	10-OCT-2008 01:12:46	Bright	35.000	82	48Bet UMa	2.3650	10600.	70	34568	No
18	GOM_TRA_1PNPDE20081010_011606_000000342072_00446_34568_6606.N1	10-OCT-2008 01:16:06	Bright	33.500	174	52Psi UMa	3.0040	4400.0	67	34568	No
19	GOM_TRA_1PNPDE20081010_012253_000000392072_00446_34568_6607.N1	10-OCT-2008 01:22:53	Bright	38.500	166	17Eps Leo	2.9800	6000.0	77	34568	No
20	GOM_TRA_1PNPDE20081010_012603_000000382072_00446_34568_6608.N1	10-OCT-2008 01:26:03	Bright	37.500	22	32Alp Leo	1.3600	15200.	75	34568	No
21	GOM_TRA_1PNPDE20081010_013302_000000532072_00446_34568_6747.N1	10-OCT-2008 01:33:02	Twilight	52.500	48	30Alp Hya	1.9770	4100.0	105	34568	No
22	GOM_TRA_1PNPDE20081010_014240_000000552072_00446_34568_6748.N1	10-OCT-2008 01:42:40	Dark	55.000	65	Lam Vel	2.2040	4400.0	110	34568	No
23	GOM_TRA_1PNPDE20081010_014538_000000422072_00446_34568_6749.N1	10-OCT-2008 01:45:38	Dark	42.000	34	Gam2Vel	1.7930	23000.	84	34568	No
24	GOM_TRA_1PNPDE20081010_014726_000000492072_00447_34569_6750.N1	10-OCT-2008 01:47:26	Dark	48.500	41	Eps Car	1.8600	4100.0	97	34569	No
25	GOM_TRA_1PNPDE20081010_014945_000000452072_00447_34569_6751.N1	10-OCT-2008 01:49:45	Dark	45.000	161	Tau Pup	2.9310	4500.0	90	34569	No
26	GOM_TRA_1PNPDE20081010_015108_000000482072_00447_34569_6752.N1	10-OCT-2008 01:51:08	Dark	48.000	2	Alp Car	-0.73600	7000.0	96	34569	No
27	GOM_TRA_1PNPDE20081010_015933_000000372072_00447_34569_6753.N1	10-OCT-2008 01:59:33	Dark	37.000	143	Alp Hyi	2.8570	7200.0	74	34569	No
28	GOM_TRA_1PNPDE20081010_020101_000000492072_00447_34569_6754.N1	10-OCT-2008 02:01:01	Dark	48.500	9	Alp Eri	0.45300	24000.	97	34569	No
29	GOM_TRA_1PNPDE20081010_020316_000000462072_00447_34569_6755.N1	10-OCT-2008 02:03:16	Straylight	45.500	157	The1Eri	2.9060	9300.0	91	34569	No
30	GOM_TRA_1PNPDE20081010_021250_000000442072_00447_34569_6756.N1	10-OCT-2008 02:12:50	Straylight	43.500	52	16Bet Cet	2.0370	4500.0	87	34569	No
31	GOM_TRA_1PNPDE20081010_022241_000000372072_00447_34569_6757.N1	10-OCT-2008 02:22:41	Bright	36.500	140	88Gam Peg	2.8340	26000.	73	34569	No
32	GOM_TRA_1PNPDE20081010_022642_000000372072_00447_34569_6758.N1	10-OCT-2008 02:26:42	Bright	37.000	58	21Alp And	2.0730	11000.	74	34569	No
33	GOM_TRA_1PNPDE20081010_022938_000000572072_00447_34569_6759.N1	10-OCT-2008 02:29:38	Bright	56.500	53	43Bet And	2.0480	3300.0	113	34569	No
34	GOM_TRA_1PNPDE20081010_023457_000000382072_00447_34569_6760.N1	10-OCT-2008 02:34:57	Bright	37.500	68	18Alp Cas	2.2250	4500.0	75	34569	No
35	GOM_TRA_1PNPDE20081010_023621_000000372072_00447_34569_6761.N1	10-OCT-2008 02:36:21	Bright	37.000	76	27Gam Cas	2.3000	30000.	74	34569	No
36	GOM_TRA_1PNPDE20081010_024340_000000362072_00447_34569_6762.N1	10-OCT-2008 02:43:40	Bright	35.500	49	1Alp UMi	1.9900	6300.0	71	34569	No
37	GOM_TRA_1PNPDE20081010_025150_000000352072_00447_34569_6919.N1	10-OCT-2008 02:51:50	Bright	34.500	36	50Alp UMa	1.8000	6300.0	69	34569	No
38	GOM_TRA_1PNPDE20081010_025322_000000342072_00447_34569_6920.N1	10-OCT-2008 02:53:22	Bright	34.000	82	48Bet UMa	2.3650	10600.	68	34569	No
39	GOM_TRA_1PNPDE20081010_025642_000000352072_00447_34569_6921.N1	10-OCT-2008 02:56:42	Bright	35.000	174	52Psi UMa	3.0040	4400.0	70	34569	No
40	GOM_TRA_1PNPDE20081010_030329_000000552072_00447_34569_6922.N1	10-OCT-2008 03:03:29	Bright	54.500	166	17Eps Leo	2.9800	6000.0	109	34569	No
41	GOM_TRA_1PNPDE20081010_030640_000000372072_00447_34569_6923.N1	10-OCT-2008 03:06:40	Bright	37.000	22	32Alp Leo	1.3600	15200.	74	34569	No
42	GOM_TRA_1PNPDE20081010_031339_000000482072_00447_34569_6924.N1	10-OCT-2008 03:13:39	Twilight	47.500	48	30Alp Hya	1.9770	4100.0	95	34569	No
43	GOM_TRA_1PNPDE20081010_032316_000000452072_00447_34569_6925.N1	10-OCT-2008 03:23:16	Dark	44.500	65	Lam Vel	2.2040	4400.0	89	34569	No
44	GOM_TRA_1PNPDE20081010_032615_000000422072_00447_34569_6926.N1	10-OCT-2008 03:26:15	Dark	41.500	34	Gam2Vel	1.7930	23000.	83	34569	No
45	GOM_TRA_1PNPDE20081010_032803_000000492072_00448_34570_6927.N1	10-OCT-2008 03:28:03	Dark	49.000	41	Eps Car	1.8600	4100.0	98	34570	No
46	GOM_TRA_1PNPDE20081010_033022_000000432072_00448_34570_6928.N1	10-OCT-2008 03:30:22	Dark	43.000	161	Tau Pup	2.9310	4500.0	86	34570	No
47	GOM_TRA_1PNPDE20081010_033145_000000492072_00448_34570_6929.N1	10-OCT-2008 03:31:45	Dark	48.500	2	Alp Car	-0.73600	7000.0	97	34570	No
48	GOM_TRA_1PNPDE20081010_034010_000000382072_00448_34570_6930.N1	10-OCT-2008 03:40:10	Dark	37.500	143	Alp Hyi	2.8570	7200.0	75	34570	No
49	GOM_TRA_1PNPDE20081010_034137_000000492072_00448_34570_6931.N1	10-OCT-2008 03:41:37	Dark	48.500	9	Alp Eri	0.45300	24000.	97	34570	No
50	GOM_TRA_1PNPDE20081010_034353_000000472072_00448_34570_6932.N1	10-OCT-2008 03:43:53	Straylight	46.500	157	The1Eri	2.9060	9300.0	93	34570	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:	44.0000 %
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:	13.360	20.552	10.129
St. deviation:	5.8328	4.8661	2.9789
Maximum:	20.374	25.081	12.235
Minimum:	3.4904	6.1211	8.0222
Number of data:	21.000	22.000	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:	0.15603	-1.3478	0.082644	-1.3552
St. deviation:	0.38758	0.60477	0.69765	0.88443
Maximum:	3.4000	1.8000	5.4000	5.4000
Minimum:	-4.6000	-8.1000	-4.7000	-6.7000
Number of data:	19450.	19450.	18850.	18850.

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	10-OCT-2008 00:02:03
CALIBRATION_DATABASE	GOM_CAL_AXVIEC20081008_081911_20081006_000000_20100101_000000	1	10-OCT-2008 00:02:03
LEVEL-1B_PROC_CONFIG	GOM_PR1_AXNIEC20050627_151042_20020301_000000_20100101_000000	1	10-OCT-2008 00:02:03
STAR_CATALOGUE	GOM_CAT_AXVIEC20020121_161009_20020101_000000_20200101_000000	1	10-OCT-2008 00:02:03
STELLAR_SPECTRA_DATABANK	GOM_STS_AXNIEC20040308_103538_20020101_160000_20100101_000000	1	10-OCT-2008 00:02:03
ECMWF_FILE	AUX_ECF_AXNECM20081009_072112_20081009_210000_20081010_090000	1	10-OCT-2008 00:02:03
OPTIONAL_ECMWF_FILE	MISSING	1	10-OCT-2008 00:02:03
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20081009_220745_000057382072_00444_34566_6528.N1	1	10-OCT-2008 00:02:03
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20081009_234842_000057382072_00445_34567_6529.N1	21	10-OCT-2008 01:33:02
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20081010_012939_000044632072_00446_34568_6530.N1	37	10-OCT-2008 02:51:50

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