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	15NOV2006 05:33:30
Data source version	GOMOS/5.00
Start time of products	QDS_YESTERDAY(/START)-1D (13NOV2006 00:00:00)
Stop time of products	QDS_YESTERDAY(/STOP)-1D (14NOV2006 00:00:00)
Store outputs in DB	Yes
Nb of level 1b prods	50
Nb of prods with errors	6

2. Summary of products arrived in PCF (Product Control Facility)

2.1 Level 0 products arrived in PCF (see template here)

2.2 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_1PNPDE20061113_000119_000000362052_00488_24590_2832.N1	13-NOV-2006 00:01:19	Twilight	36.000	171	2Eps Crv	3.0010	4250.0	72	24590	No
2	GOM_TRA_1PNPDE20061113_001028_000000362052_00488_24590_2833.N1	13-NOV-2006 00:10:28	Dark	35.500	113	Mu Vel	2.6920	5000.0	71	24590	No
3	GOM_TRA_1PNPDE20061113_001335_000000302052_00489_24591_2834.N1	13-NOV-2006 00:13:35	Dark	30.000	124	The Car	2.7640	30000.	60	24591	No
4	GOM_TRA_1PNPDE20061113_001626_000000332052_00489_24591_2835.N1	13-NOV-2006 00:16:26	Dark	33.000	29	Bet Car	1.6720	10200.	66	24591	No
5	GOM_TRA_1PNPDE20061113_002247_000000552052_00489_24591_2836.N1	13-NOV-2006 00:22:47	Dark	55.000	2	Alp Car	-0.73600	7000.0	110	24591	No
6	GOM_TRA_1PNPDE20061113_003148_000000332052_00489_24591_2837.N1	13-NOV-2006 00:31:48	Straylight	33.000	157	The1Eri	2.9060	9300.0	66	24591	No
7	GOM_TRA_1PNPDE20061113_004456_000000402052_00489_24591_2933.N1	13-NOV-2006 00:44:56	Twi_and_stray	40.000	94	92Alp Cet	2.5260	3100.0	80	24591	No
8	GOM_TRA_1PNPDE20061113_004940_000000312052_00489_24591_2934.N1	13-NOV-2006 00:49:40	Bright	31.000	105	6Bet Ari	2.6450	8900.0	62	24591	Yes
9	GOM_TRA_1PNPDE20061113_005344_000000302052_00489_24591_2935.N1	13-NOV-2006 00:53:44	Bright	29.500	173	4Bet Tri	3.0040	8900.0	59	24591	No
10	GOM_TRA_1PNPDE20061113_005548_000000332052_00489_24591_2936.N1	13-NOV-2006 00:55:48	Bright	33.000	73	57Gam1And	2.2600	13100.	66	24591	No
11	GOM_TRA_1PNPDE20061113_005944_000000312052_00489_24591_2937.N1	13-NOV-2006 00:59:44	Bright	31.000	160	23Gam Per	2.9300	4700.0	62	24591	No
12	GOM_TRA_1PNPDE20061113_010900_000000302052_00489_24591_2938.N1	13-NOV-2006 01:09:00	Bright	30.000	49	1Alp UMi	1.9900	6300.0	60	24591	Yes
13	GOM_TRA_1PNPDE20061113_011316_000000302052_00489_24591_2939.N1	13-NOV-2006 01:13:16	Bright	30.000	60	7Bet UMi	2.0810	3950.0	60	24591	No
14	GOM_TRA_1PNPDE20061113_011647_000000362052_00489_24591_2940.N1	13-NOV-2006 01:16:47	Bright	36.000	36	50Alp UMa	1.8000	6300.0	72	24591	No
15	GOM_TRA_1PNPDE20061113_011857_000000322052_00489_24591_2941.N1	13-NOV-2006 01:18:57	Bright	31.500	32	77Eps UMa	1.7630	11000.	63	24591	No
16	GOM_TRA_1PNPDE20061113_012402_000000302052_00489_24591_2942.N1	13-NOV-2006 01:24:02	Bright	29.500	152	12Alp2CVn	2.8900	11000.	59	24591	No
17	GOM_TRA_1PNPDE20061113_013153_000000362052_00489_24591_2943.N1	13-NOV-2006 01:31:53	Bright	35.500	62	94Bet Leo	2.1360	9700.0	71	24591	No
18	GOM_TRA_1PNPDE20061113_013528_000000282052_00489_24591_2944.N1	13-NOV-2006 01:35:28	Bright	27.500	121	29Gam Vir	2.7400	7200.0	55	24591	No
19	GOM_TRA_1PNPDE20061113_014025_000000322052_00489_24591_2945.N1	13-NOV-2006 01:40:25	Twi_and_stray	32.000	100	4Gam Crv	2.5800	13100.	64	24591	No
20	GOM_TRA_1PNPDE20061113_015105_000000382052_00489_24591_2946.N1	13-NOV-2006 01:51:05	Dark	38.000	113	Mu Vel	2.6920	5000.0	76	24591	No
21	GOM_TRA_1PNPDE20061113_015411_000000312052_00490_24592_2947.N1	13-NOV-2006 01:54:11	Dark	31.000	124	The Car	2.7640	30000.	62	24592	No
22	GOM_TRA_1PNPDE20061113_015703_000000332052_00490_24592_2948.N1	13-NOV-2006 01:57:03	Dark	32.500	29	Bet Car	1.6720	10200.	65	24592	No
23	GOM_TRA_1PNPDE20061113_020323_000000532052_00490_24592_2949.N1	13-NOV-2006 02:03:23	Dark	52.500	2	Alp Car	-0.73600	7000.0	105	24592	No
24	GOM_TRA_1PNPDE20061113_021224_000000322052_00490_24592_2950.N1	13-NOV-2006 02:12:24	Straylight	32.000	157	The1Eri	2.9060	9300.0	64	24592	No
25	GOM_TRA_1PNPDE20061113_022532_000000422052_00490_24592_3097.N1	13-NOV-2006 02:25:32	Twi_and_stray	42.000	94	92Alp Cet	2.5260	3100.0	84	24592	No
26	GOM_TRA_1PNPDE20061113_023016_000000322052_00490_24592_3098.N1	13-NOV-2006 02:30:16	Bright	31.500	105	6Bet Ari	2.6450	8900.0	63	24592	Yes
27	GOM_TRA_1PNPDE20061113_023420_000000322052_00490_24592_3099.N1	13-NOV-2006 02:34:20	Bright	31.500	173	4Bet Tri	3.0040	8900.0	63	24592	No
28	GOM_TRA_1PNPDE20061113_023624_000000332052_00490_24592_3100.N1	13-NOV-2006 02:36:24	Bright	32.500	73	57Gam1And	2.2600	13100.	65	24592	No
29	GOM_TRA_1PNPDE20061113_024019_000000332052_00490_24592_3101.N1	13-NOV-2006 02:40:19	Bright	32.500	160	23Gam Per	2.9300	4700.0	65	24592	No
30	GOM_TRA_1PNPDE20061113_024936_000000272052_00490_24592_3102.N1	13-NOV-2006 02:49:36	Bright	26.500	49	1Alp UMi	1.9900	6300.0	53	24592	Yes
31	GOM_TRA_1PNPDE20061113_025352_000000302052_00490_24592_3103.N1	13-NOV-2006 02:53:52	Bright	30.000	60	7Bet UMi	2.0810	3950.0	60	24592	No
32	GOM_TRA_1PNPDE20061113_025723_000000352052_00490_24592_3104.N1	13-NOV-2006 02:57:23	Bright	35.000	36	50Alp UMa	1.8000	6300.0	70	24592	No
33	GOM_TRA_1PNPDE20061113_025933_000000472052_00490_24592_3105.N1	13-NOV-2006 02:59:33	Bright	47.000	32	77Eps UMa	1.7630	11000.	94	24592	No
34	GOM_TRA_1PNPDE20061113_030438_000000282052_00490_24592_3106.N1	13-NOV-2006 03:04:38	Bright	27.500	152	12Alp2CVn	2.8900	11000.	55	24592	No
35	GOM_TRA_1PNPDE20061113_031229_000000322052_00490_24592_3107.N1	13-NOV-2006 03:12:29	Bright	32.000	62	94Bet Leo	2.1360	9700.0	64	24592	No
36	GOM_TRA_1PNPDE20061113_031604_000000292052_00490_24592_3108.N1	13-NOV-2006 03:16:04	Bright	28.500	121	29Gam Vir	2.7400	7200.0	57	24592	No
37	GOM_TRA_1PNPDE20061113_032102_000000342052_00490_24592_3109.N1	13-NOV-2006 03:21:02	Twi_and_stray	33.500	100	4Gam Crv	2.5800	13100.	67	24592	No
38	GOM_TRA_1PNPDE20061113_033141_000000362052_00490_24592_3110.N1	13-NOV-2006 03:31:41	Dark	36.000	113	Mu Vel	2.6920	5000.0	72	24592	No
39	GOM_TRA_1PNPDE20061113_033447_000000332052_00491_24593_3111.N1	13-NOV-2006 03:34:47	Dark	32.500	124	The Car	2.7640	30000.	65	24593	No
40	GOM_TRA_1PNPDE20061113_033739_000000332052_00491_24593_3112.N1	13-NOV-2006 03:37:39	Dark	32.500	29	Bet Car	1.6720	10200.	65	24593	No
41	GOM_TRA_1PNPDE20061113_034400_000000462052_00491_24593_3113.N1	13-NOV-2006 03:44:00	Dark	46.000	2	Alp Car	-0.73600	7000.0	92	24593	No
42	GOM_TRA_1PNPDE20061113_035301_000000322052_00491_24593_3114.N1	13-NOV-2006 03:53:01	Straylight	32.000	157	The1Eri	2.9060	9300.0	64	24593	No
43	GOM_TRA_1PNPDE20061113_040608_000000422052_00491_24593_3285.N1	13-NOV-2006 04:06:08	Twi_and_stray	41.500	94	92Alp Cet	2.5260	3100.0	83	24593	No
44	GOM_TRA_1PNPDE20061113_041052_000000302052_00491_24593_3286.N1	13-NOV-2006 04:10:52	Bright	30.000	105	6Bet Ari	2.6450	8900.0	60	24593	Yes
45	GOM_TRA_1PNPDE20061113_041456_000000312052_00491_24593_3287.N1	13-NOV-2006 04:14:56	Bright	30.500	173	4Bet Tri	3.0040	8900.0	61	24593	No
46	GOM_TRA_1PNPDE20061113_041700_000000312052_00491_24593_3288.N1	13-NOV-2006 04:17:00	Bright	31.000	73	57Gam1And	2.2600	13100.	62	24593	No
47	GOM_TRA_1PNPDE20061113_042055_000000312052_00491_24593_3289.N1	13-NOV-2006 04:20:55	Bright	30.500	160	23Gam Per	2.9300	4700.0	61	24593	No
48	GOM_TRA_1PNPDE20061113_043012_000000282052_00491_24593_3290.N1	13-NOV-2006 04:30:12	Bright	28.000	49	1Alp UMi	1.9900	6300.0	56	24593	Yes
49	GOM_TRA_1PNPDE20061113_043428_000000312052_00491_24593_3291.N1	13-NOV-2006 04:34:28	Bright	31.000	60	7Bet UMi	2.0810	3950.0	62	24593	No
50	GOM_TRA_1PNPDE20061113_043759_000000342052_00491_24593_3292.N1	13-NOV-2006 04:37:59	Bright	33.500	36	50Alp UMa	1.8000	6300.0	67	24593	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:	15.9091 %
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:	15.214	20.789	13.787
St. deviation:	6.1638	4.7408	0.0000
Maximum:	22.485	27.788	13.787
Minimum:	3.5021	4.0432	13.787
Number of data:	12.000	23.000	1.0000

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:	0.095109	-1.6138	0.061262	-1.6573
St. deviation:	0.54166	1.4024	0.73481	1.5967
Maximum:	3.8000	3.1000	5.4000	3.7000
Minimum:	-0.20000	-5.1000	-0.70000	-3.9000
Number of data:	4200.0	4200.0	6350.0	6350.0

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.

qds_image

8. Auxiliary Data Files used for the production reported in section 2.2

The number reported in the third column indicates since which file (see list in section 2.2) 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-NOV-2006 00:01:19
CALIBRATION_DATABASE	GOM_CAL_AXVIEC20061109_084512_20061107_000000_20100101_000000	1	13-NOV-2006 00:01:19
LEVEL-1B_PROC_CONFIG	GOM_PR1_AXNIEC20050627_151042_20020301_000000_20100101_000000	1	13-NOV-2006 00:01:19
STAR_CATALOGUE	GOM_CAT_AXVIEC20020121_161009_20020101_000000_20200101_000000	1	13-NOV-2006 00:01:19
STELLAR_SPECTRA_DATABANK	GOM_STS_AXNIEC20040308_103538_20020101_160000_20100101_000000	1	13-NOV-2006 00:01:19
ECMWF_FILE	AUX_ECF_AXNECM20061112_062359_20061112_210000_20061113_090000	1	13-NOV-2006 00:01:19
ECMWF_FILE	AUX_ECF_AXNECM20061112_182309_20061113_030000_20061113_150000	43	13-NOV-2006 04:06:08
OPTIONAL_ECMWF_FILE	MISSING	1	13-NOV-2006 00:01:19
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20061112_224840_000060572052_00488_24590_2386.N1	1	13-NOV-2006 00:01:19
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20061112_224840_000060572052_00489_24591_2386.N1	3	13-NOV-2006 00:13:35
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20061113_003455_000057382052_00489_24591_2387.N1	7	13-NOV-2006 00:44:56
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20061113_003455_000057382052_00490_24592_2387.N1	21	13-NOV-2006 01:54:11
ORBIT_DATA_FILE	AUX_FPO_AXVFOS20061113_000134_20061112_191004_20061122_203618	25	13-NOV-2006 02:25:32
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20061113_035649_000057382052_00491_24593_2389.N1	43	13-NOV-2006 04:06:08

Reports

Daily Report Level 2 Dataset IPF v6.01

Daily Reports of NRT data

Data Anomaly Reports

Instrument Anomaly Reports

Monthly Reports

e-mail webmaster

Last modified:
24-Apr-2008