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	04APR2008 05:32:36
Data source version	GOMOS/5.00
Start time of products	QDS_YESTERDAY(/START)-1D (02APR2008 00:00:00)
Stop time of products	QDS_YESTERDAY(/STOP)-1D (03APR2008 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)

UTC start time	Star name	Star ID	Orbit
02-APR-2008 00:01:31	GamGru	172	31833
02-APR-2008 01:42:07	GamGru	172	31834

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_1PNPDE20080402_000813_000000382067_00216_31833_8083.N1	02-APR-2008 00:08:13	Dark	38.000	45	Alp Pav	1.9400	26000.	76	31833	No
2	GOM_TRA_1PNPDE20080402_001545_000000402067_00217_31834_8084.N1	02-APR-2008 00:15:45	Dark	39.500	43	Alp TrA	1.9100	4250.0	79	31834	No
3	GOM_TRA_1PNPDE20080402_001737_000000392067_00217_31834_8085.N1	02-APR-2008 00:17:37	Dark	39.000	134	Bet TrA	2.8100	6600.0	78	31834	No
4	GOM_TRA_1PNPDE20080402_002014_000000482067_00217_31834_8086.N1	02-APR-2008 00:20:14	Dark	47.500	4	Alp1Cen	-0.010000	5800.0	95	31834	No
5	GOM_TRA_1PNPDE20080402_002227_000000412067_00217_31834_8087.N1	02-APR-2008 00:22:27	Straylight	41.000	12	Alp1Cru	0.77500	30000.	82	31834	No
6	GOM_TRA_1PNPDE20080402_002355_000000482067_00217_31834_8088.N1	02-APR-2008 00:23:55	Straylight	48.000	26	Gam Cru	1.6240	2900.0	96	31834	No
7	GOM_TRA_1PNPDE20080402_002552_000000392067_00217_31834_8089.N1	02-APR-2008 00:25:52	Straylight	39.000	64	Gam Cen	2.2000	10600.	78	31834	No
8	GOM_TRA_1PNPDE20080402_002827_000000412067_00217_31834_8090.N1	02-APR-2008 00:28:27	Straylight	41.000	123	Iot Cen	2.7500	10200.	82	31834	No
9	GOM_TRA_1PNPDE20080402_003315_000000432067_00217_31834_8205.N1	02-APR-2008 00:33:15	Twi_and_stray	43.000	106	9Bet Crv	2.6480	5600.0	86	31834	No
10	GOM_TRA_1PNPDE20080402_003512_000000402067_00217_31834_8206.N1	02-APR-2008 00:35:12	Twi_and_stray	40.000	100	4Gam Crv	2.5800	13100.	80	31834	No
11	GOM_TRA_1PNPDE20080402_004450_000000382067_00217_31834_8207.N1	02-APR-2008 00:44:50	Bright	37.500	62	94Bet Leo	2.1360	9700.0	75	31834	No
12	GOM_TRA_1PNPDE20080402_004628_000000362067_00217_31834_8208.N1	02-APR-2008 00:46:28	Bright	35.500	96	68Del Leo	2.5600	9300.0	71	31834	No
13	GOM_TRA_1PNPDE20080402_005316_000000372067_00217_31834_8209.N1	02-APR-2008 00:53:16	Bright	37.000	174	52Psi UMa	3.0040	4400.0	74	31834	No
14	GOM_TRA_1PNPDE20080402_005615_000000362067_00217_31834_8210.N1	02-APR-2008 00:56:15	Bright	35.500	87	64Gam UMa	2.4330	11000.	71	31834	No
15	GOM_TRA_1PNPDE20080402_005808_000000382067_00217_31834_8211.N1	02-APR-2008 00:58:08	Bright	37.500	36	50Alp UMa	1.8000	6300.0	75	31834	No
16	GOM_TRA_1PNPDE20080402_010611_000000322067_00217_31834_8212.N1	02-APR-2008 01:06:11	Bright	32.000	49	1Alp UMi	1.9900	6300.0	64	31834	No
17	GOM_TRA_1PNPDE20080402_011352_000000372067_00217_31834_8213.N1	02-APR-2008 01:13:52	Bright	37.000	89	5Alp Cep	2.4510	8000.0	74	31834	No
18	GOM_TRA_1PNPDE20080402_012923_000000462067_00217_31834_8214.N1	02-APR-2008 01:29:23	Twi_and_stray	45.500	61	8Eps Peg	2.1000	3900.0	91	31834	No
19	GOM_TRA_1PNPDE20080402_013153_000000422067_00217_31834_8215.N1	02-APR-2008 01:31:53	Twilight	41.500	162	34Alp Aqr	2.9440	5350.0	83	31834	No
20	GOM_TRA_1PNPDE20080402_013401_000000432067_00217_31834_8216.N1	02-APR-2008 01:34:01	Dark	42.500	154	22Bet Aqr	2.8990	5700.0	85	31834	No
21	GOM_TRA_1PNPDE20080402_013634_000000402067_00217_31834_8217.N1	02-APR-2008 01:36:34	Dark	40.000	142	49Del Cap	2.8500	8900.0	80	31834	No
22	GOM_TRA_1PNPDE20080402_014850_000000392067_00217_31834_8218.N1	02-APR-2008 01:48:50	Dark	39.000	45	Alp Pav	1.9400	26000.	78	31834	No
23	GOM_TRA_1PNPDE20080402_015621_000000402067_00218_31835_8219.N1	02-APR-2008 01:56:21	Dark	40.000	43	Alp TrA	1.9100	4250.0	80	31835	No
24	GOM_TRA_1PNPDE20080402_015813_000000402067_00218_31835_8220.N1	02-APR-2008 01:58:13	Dark	39.500	134	Bet TrA	2.8100	6600.0	79	31835	No
25	GOM_TRA_1PNPDE20080402_020051_000000432067_00218_31835_8221.N1	02-APR-2008 02:00:51	Dark	43.000	4	Alp1Cen	-0.010000	5800.0	86	31835	No
26	GOM_TRA_1PNPDE20080402_020303_000000432067_00218_31835_8222.N1	02-APR-2008 02:03:03	Straylight	43.000	12	Alp1Cru	0.77500	30000.	86	31835	No
27	GOM_TRA_1PNPDE20080402_020431_000000522067_00218_31835_8223.N1	02-APR-2008 02:04:31	Straylight	51.500	26	Gam Cru	1.6240	2900.0	103	31835	No
28	GOM_TRA_1PNPDE20080402_020628_000000402067_00218_31835_8224.N1	02-APR-2008 02:06:28	Straylight	40.000	64	Gam Cen	2.2000	10600.	80	31835	No
29	GOM_TRA_1PNPDE20080402_020903_000000432067_00218_31835_8225.N1	02-APR-2008 02:09:03	Straylight	42.500	123	Iot Cen	2.7500	10200.	85	31835	No
30	GOM_TRA_1PNPDE20080402_021351_000000452067_00218_31835_8226.N1	02-APR-2008 02:13:51	Twi_and_stray	44.500	106	9Bet Crv	2.6480	5600.0	89	31835	No
31	GOM_TRA_1PNPDE20080402_021548_000000422067_00218_31835_8431.N1	02-APR-2008 02:15:48	Twi_and_stray	42.000	100	4Gam Crv	2.5800	13100.	84	31835	No
32	GOM_TRA_1PNPDE20080402_022526_000000382067_00218_31835_8432.N1	02-APR-2008 02:25:26	Bright	38.000	62	94Bet Leo	2.1360	9700.0	76	31835	No
33	GOM_TRA_1PNPDE20080402_022704_000000362067_00218_31835_8433.N1	02-APR-2008 02:27:04	Bright	36.000	96	68Del Leo	2.5600	9300.0	72	31835	No
34	GOM_TRA_1PNPDE20080402_023352_000000362067_00218_31835_8434.N1	02-APR-2008 02:33:52	Bright	36.000	174	52Psi UMa	3.0040	4400.0	72	31835	No
35	GOM_TRA_1PNPDE20080402_023651_000000372067_00218_31835_8435.N1	02-APR-2008 02:36:51	Bright	37.000	87	64Gam UMa	2.4330	11000.	74	31835	No
36	GOM_TRA_1PNPDE20080402_023844_000000352067_00218_31835_8436.N1	02-APR-2008 02:38:44	Bright	34.500	36	50Alp UMa	1.8000	6300.0	69	31835	No
37	GOM_TRA_1PNPDE20080402_024647_000000362067_00218_31835_8437.N1	02-APR-2008 02:46:47	Bright	35.500	49	1Alp UMi	1.9900	6300.0	71	31835	No
38	GOM_TRA_1PNPDE20080402_025428_000000372067_00218_31835_8438.N1	02-APR-2008 02:54:28	Bright	36.500	89	5Alp Cep	2.4510	8000.0	73	31835	No
39	GOM_TRA_1PNPDE20080402_031000_000000452067_00218_31835_8439.N1	02-APR-2008 03:10:00	Twi_and_stray	44.500	61	8Eps Peg	2.1000	3900.0	89	31835	No
40	GOM_TRA_1PNPDE20080402_031229_000000422067_00218_31835_8440.N1	02-APR-2008 03:12:29	Twilight	41.500	162	34Alp Aqr	2.9440	5350.0	83	31835	No
41	GOM_TRA_1PNPDE20080402_031437_000000432067_00218_31835_8441.N1	02-APR-2008 03:14:37	Dark	42.500	154	22Bet Aqr	2.8990	5700.0	85	31835	No
42	GOM_TRA_1PNPDE20080402_031710_000000402067_00218_31835_8442.N1	02-APR-2008 03:17:10	Dark	39.500	142	49Del Cap	2.8500	8900.0	79	31835	No
43	GOM_TRA_1PNPDE20080402_032245_000000372067_00218_31835_8443.N1	02-APR-2008 03:22:45	Dark	36.500	172	Gam Gru	3.0030	13100.	73	31835	No
44	GOM_TRA_1PNPDE20080402_032926_000000382067_00218_31835_8444.N1	02-APR-2008 03:29:26	Dark	37.500	45	Alp Pav	1.9400	26000.	75	31835	No
45	GOM_TRA_1PNPDE20080402_033657_000000432067_00219_31836_8445.N1	02-APR-2008 03:36:57	Dark	43.000	43	Alp TrA	1.9100	4250.0	86	31836	No
46	GOM_TRA_1PNPDE20080402_033850_000000402067_00219_31836_8446.N1	02-APR-2008 03:38:50	Dark	39.500	134	Bet TrA	2.8100	6600.0	79	31836	No
47	GOM_TRA_1PNPDE20080402_034127_000000462067_00219_31836_8447.N1	02-APR-2008 03:41:27	Dark	46.000	4	Alp1Cen	-0.010000	5800.0	92	31836	No
48	GOM_TRA_1PNPDE20080402_034339_000000432067_00219_31836_8448.N1	02-APR-2008 03:43:39	Straylight	42.500	12	Alp1Cru	0.77500	30000.	85	31836	No
49	GOM_TRA_1PNPDE20080402_034507_000000442067_00219_31836_8449.N1	02-APR-2008 03:45:07	Straylight	44.000	26	Gam Cru	1.6240	2900.0	88	31836	No
50	GOM_TRA_1PNPDE20080402_034704_000000372067_00219_31836_8450.N1	02-APR-2008 03:47:04	Straylight	37.000	64	Gam Cen	2.2000	10600.	74	31836	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:	30.0000 %
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:	15.800	21.749	12.150
St. deviation:	3.3916	2.8235	0.12287
Maximum:	19.715	29.474	12.237
Minimum:	9.1291	18.678	12.063
Number of data:	17.000	14.000	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:	0.055538	-1.4024	0.10235	-1.3952
St. deviation:	0.57187	0.74549	0.78292	0.88232
Maximum:	4.7000	27.400	4.1000	2.0000
Minimum:	-12.600	-11.200	-3.3000	-5.7000
Number of data:	15000.	15000.	11500.	11500.

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	02-APR-2008 00:08:13
CALIBRATION_DATABASE	GOM_CAL_AXVIEC20080401_074641_20080330_000000_20100101_000000	1	02-APR-2008 00:08:13
LEVEL-1B_PROC_CONFIG	GOM_PR1_AXNIEC20050627_151042_20020301_000000_20100101_000000	1	02-APR-2008 00:08:13
STAR_CATALOGUE	GOM_CAT_AXVIEC20020121_161009_20020101_000000_20200101_000000	1	02-APR-2008 00:08:13
STELLAR_SPECTRA_DATABANK	GOM_STS_AXNIEC20040308_103538_20020101_160000_20100101_000000	1	02-APR-2008 00:08:13
ECMWF_FILE	AUX_ECF_AXNECM20080401_072112_20080401_210000_20080402_090000	1	02-APR-2008 00:08:13
OPTIONAL_ECMWF_FILE	MISSING	1	02-APR-2008 00:08:13
ORBIT_DATA_FILE	AUX_FPO_AXVPDS20080401_010110_20080331_193840_20080410_210453	1	02-APR-2008 00:08:13
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20080401_224212_000060572067_00216_31833_5334.N1	9	02-APR-2008 00:33:15
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20080402_002828_000060572067_00217_31834_5335.N1	31	02-APR-2008 02:15:48

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