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	24JUL2006 04:31:47
Data source version	GOMOS/4.02
Start time of products	QDS_YESTERDAY(/START)-1D (22JUL2006 00:00:00)
Stop time of products	QDS_YESTERDAY(/STOP)-1D (23JUL2006 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 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_1PNPDE20060722_000108_000000372049_00360_22959_0001.N1	22-JUL-2006 00:01:08	Dark	36.500	135	Bet Hyi	2.8200	5800.0	73	22959	No
2	GOM_TRA_1PNPDE20060722_000529_000000402049_00360_22959_0002.N1	22-JUL-2006 00:05:29	Twilight	40.000	148	Alp Tuc	2.8780	4100.0	80	22959	No
3	GOM_TRA_1PNPDE20060722_012220_000000382049_00360_22959_0000.N1	22-JUL-2006 01:22:20	Dark	37.500	101	11Alp Lep	2.5820	7000.0	75	22959	No
4	GOM_TRA_1PNPDE20060722_013845_000000422049_00361_22960_0001.N1	22-JUL-2006 01:38:45	Dark	42.000	9	Alp Eri	0.45300	24000.	84	22960	No
5	GOM_TRA_1PNPDE20060722_014144_000000372049_00361_22960_0002.N1	22-JUL-2006 01:41:44	Dark	37.000	135	Bet Hyi	2.8200	5800.0	74	22960	No
6	GOM_TRA_1PNPDE20060722_014605_000000412049_00361_22960_0003.N1	22-JUL-2006 01:46:05	Twilight	41.000	148	Alp Tuc	2.8780	4100.0	82	22960	No
7	GOM_TRA_1PNPDE20060722_014943_000000462049_00361_22960_0004.N1	22-JUL-2006 01:49:43	Twilight	45.500	45	Alp Pav	1.9400	26000.	91	22960	No
8	GOM_TRA_1PNPDE20060722_015822_000000432049_00361_22960_0005.N1	22-JUL-2006 01:58:22	Bright	42.500	103	38Zet Sgr	2.6000	9700.0	85	22960	No
9	GOM_TRA_1PNPDE20060722_020048_000000382049_00361_22960_0006.N1	22-JUL-2006 02:00:48	Bright	38.000	155	41Pi Sgr	2.9000	6600.0	76	22960	No
10	GOM_TRA_1PNPDE20060722_021102_000000372049_00361_22960_0007.N1	22-JUL-2006 02:11:02	Bright	37.000	168	17Zet Aql	2.9860	11000.	74	22960	No
11	GOM_TRA_1PNPDE20060722_021806_000000412049_00361_22960_0008.N1	22-JUL-2006 02:18:06	Bright	40.500	5	3Alp Lyr	0.033000	11000.	81	22960	No
12	GOM_TRA_1PNPDE20060722_022138_000000352049_00361_22960_0009.N1	22-JUL-2006 02:21:38	Bright	35.000	69	33Gam Dra	2.2310	3800.0	70	22960	No
13	GOM_TRA_1PNPDE20060722_023238_000000342049_00361_22960_0010.N1	22-JUL-2006 02:32:38	Bright	33.500	49	1Alp UMi	1.9900	6300.0	67	22960	No
14	GOM_TRA_1PNPDE20060722_024511_000000392049_00361_22960_0000.N1	22-JUL-2006 02:45:11	Twilight	38.500	6	13Alp Aur	0.080000	3400.0	77	22960	No
15	GOM_TRA_1PNPDE20060722_024903_000000402049_00361_22960_0001.N1	22-JUL-2006 02:49:03	Twilight	40.000	114	3Iot Aur	2.6930	4600.0	80	22960	No
16	GOM_TRA_1PNPDE20060722_042547_000000532049_00362_22961_0000.N1	22-JUL-2006 04:25:47	Twilight	53.000	6	13Alp Aur	0.080000	3400.0	106	22961	No
17	GOM_TRA_1PNPDE20060722_042939_000000392049_00362_22961_0001.N1	22-JUL-2006 04:29:39	Twilight	39.000	114	3Iot Aur	2.6930	4600.0	78	22961	No
18	GOM_TRA_1PNPDE20060722_043453_000000562049_00362_22961_0002.N1	22-JUL-2006 04:34:53	Twilight	55.500	13	87Alp Tau	0.86700	3800.0	111	22961	No
19	GOM_TRA_1PNPDE20060722_043700_000000412049_00362_22961_0003.N1	22-JUL-2006 04:37:00	Twilight	40.500	27	24Gam Ori	1.6360	26000.	81	22961	No
20	GOM_TRA_1PNPDE20060722_043856_000000382049_00362_22961_0004.N1	22-JUL-2006 04:38:56	Twilight	37.500	30	46Eps Ori	1.6940	30000.	75	22961	No
21	GOM_TRA_1PNPDE20060722_044112_000000382049_00362_22961_0005.N1	22-JUL-2006 04:41:12	Dark	37.500	7	19Bet Ori	0.10000	14000.	75	22961	No
22	GOM_TRA_1PNPDE20060722_044333_000000402049_00362_22961_0006.N1	22-JUL-2006 04:43:33	Dark	40.000	101	11Alp Lep	2.5820	7000.0	80	22961	No
23	GOM_TRA_1PNPDE20060722_045958_000000512049_00363_22962_0007.N1	22-JUL-2006 04:59:58	Dark	50.500	9	Alp Eri	0.45300	24000.	101	22962	No
24	GOM_TRA_1PNPDE20060722_050257_000000372049_00363_22962_0008.N1	22-JUL-2006 05:02:57	Dark	36.500	135	Bet Hyi	2.8200	5800.0	73	22962	No
25	GOM_TRA_1PNPDE20060722_050718_000000412049_00363_22962_0009.N1	22-JUL-2006 05:07:18	Twilight	40.500	148	Alp Tuc	2.8780	4100.0	81	22962	No
26	GOM_TRA_1PNPDE20060722_051056_000000432049_00363_22962_0010.N1	22-JUL-2006 05:10:56	Twilight	42.500	45	Alp Pav	1.9400	26000.	85	22962	No
27	GOM_TRA_1PNPDE20060722_051934_000000382049_00363_22962_0011.N1	22-JUL-2006 05:19:34	Bright	38.000	103	38Zet Sgr	2.6000	9700.0	76	22962	No
28	GOM_TRA_1PNPDE20060722_052200_000000372049_00363_22962_0012.N1	22-JUL-2006 05:22:00	Bright	36.500	155	41Pi Sgr	2.9000	6600.0	73	22962	No
29	GOM_TRA_1PNPDE20060722_201623_000000392049_00372_22971_0000.N1	22-JUL-2006 20:16:23	Twilight	38.500	45	Alp Pav	1.9400	26000.	77	22971	No
30	GOM_TRA_1PNPDE20060722_202459_000000472049_00372_22971_0001.N1	22-JUL-2006 20:24:59	Bright	47.000	103	38Zet Sgr	2.6000	9700.0	94	22971	No
31	GOM_TRA_1PNPDE20060722_202725_000000372049_00372_22971_0002.N1	22-JUL-2006 20:27:25	Bright	37.000	155	41Pi Sgr	2.9000	6600.0	74	22971	No
32	GOM_TRA_1PNPDE20060722_203737_000000372049_00372_22971_0003.N1	22-JUL-2006 20:37:37	Bright	37.000	168	17Zet Aql	2.9860	11000.	74	22971	No
33	GOM_TRA_1PNPDE20060722_204441_000000352049_00372_22971_0004.N1	22-JUL-2006 20:44:41	Bright	34.500	5	3Alp Lyr	0.033000	11000.	69	22971	No
34	GOM_TRA_1PNPDE20060722_204814_000000382049_00372_22971_0005.N1	22-JUL-2006 20:48:14	Bright	38.000	69	33Gam Dra	2.2310	3800.0	76	22971	No
35	GOM_TRA_1PNPDE20060722_205913_000000362049_00372_22971_0006.N1	22-JUL-2006 20:59:13	Bright	35.500	49	1Alp UMi	1.9900	6300.0	71	22971	No
36	GOM_TRA_1PNPDE20060722_211147_000000402049_00372_22971_0007.N1	22-JUL-2006 21:11:47	Twilight	39.500	6	13Alp Aur	0.080000	3400.0	79	22971	No
37	GOM_TRA_1PNPDE20060722_211540_000000512049_00372_22971_0008.N1	22-JUL-2006 21:15:40	Twilight	51.000	114	3Iot Aur	2.6930	4600.0	102	22971	No
38	GOM_TRA_1PNPDE20060722_212302_000000372049_00372_22971_0009.N1	22-JUL-2006 21:23:02	Twilight	36.500	27	24Gam Ori	1.6360	26000.	73	22971	No
39	GOM_TRA_1PNPDE20060722_212458_000000392049_00372_22971_0010.N1	22-JUL-2006 21:24:58	Twilight	38.500	30	46Eps Ori	1.6940	30000.	77	22971	No
40	GOM_TRA_1PNPDE20060722_212934_000000382049_00372_22971_0000.N1	22-JUL-2006 21:29:34	Dark	37.500	101	11Alp Lep	2.5820	7000.0	75	22971	No
41	GOM_TRA_1PNPDE20060722_214604_000000522049_00373_22972_0001.N1	22-JUL-2006 21:46:04	Dark	52.000	9	Alp Eri	0.45300	24000.	104	22972	No
42	GOM_TRA_1PNPDE20060722_214859_000000372049_00373_22972_0002.N1	22-JUL-2006 21:48:59	Dark	36.500	135	Bet Hyi	2.8200	5800.0	73	22972	No
43	GOM_TRA_1PNPDE20060722_215323_000000422049_00373_22972_0003.N1	22-JUL-2006 21:53:23	Twilight	41.500	148	Alp Tuc	2.8780	4100.0	83	22972	No
44	GOM_TRA_1PNPDE20060722_215659_000000402049_00373_22972_0004.N1	22-JUL-2006 21:56:59	Twilight	39.500	45	Alp Pav	1.9400	26000.	79	22972	No
45	GOM_TRA_1PNPDE20060722_220535_000000432049_00373_22972_0005.N1	22-JUL-2006 22:05:35	Bright	43.000	103	38Zet Sgr	2.6000	9700.0	86	22972	No
46	GOM_TRA_1PNPDE20060722_220801_000000372049_00373_22972_0006.N1	22-JUL-2006 22:08:01	Bright	36.500	155	41Pi Sgr	2.9000	6600.0	73	22972	No
47	GOM_TRA_1PNPDE20060722_221813_000000362049_00373_22972_0007.N1	22-JUL-2006 22:18:13	Bright	36.000	168	17Zet Aql	2.9860	11000.	72	22972	No
48	GOM_TRA_1PNPDE20060722_222516_000000362049_00373_22972_0008.N1	22-JUL-2006 22:25:16	Bright	36.000	5	3Alp Lyr	0.033000	11000.	72	22972	No
49	GOM_TRA_1PNPDE20060722_222850_000000382049_00373_22972_0009.N1	22-JUL-2006 22:28:50	Bright	37.500	69	33Gam Dra	2.2310	3800.0	75	22972	No
50	GOM_TRA_1PNPDE20060722_223949_000000352049_00373_22972_0010.N1	22-JUL-2006 22:39:49	Bright	35.000	49	1Alp UMi	1.9900	6300.0	70	22972	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_1PNPDE20060722_201623_000000392049_00372_22971_0000.N1	DC map used (0)
GOM_TRA_1PNPDE20060722_202459_000000472049_00372_22971_0001.N1	DC map used (0)
GOM_TRA_1PNPDE20060722_202725_000000372049_00372_22971_0002.N1	DC map used (0)
GOM_TRA_1PNPDE20060722_203737_000000372049_00372_22971_0003.N1	DC map used (0)
GOM_TRA_1PNPDE20060722_204441_000000352049_00372_22971_0004.N1	DC map used (0)
GOM_TRA_1PNPDE20060722_204814_000000382049_00372_22971_0005.N1	DC map used (0)
GOM_TRA_1PNPDE20060722_205913_000000362049_00372_22971_0006.N1	DC map used (0)
GOM_TRA_1PNPDE20060722_211147_000000402049_00372_22971_0007.N1	DC map used (0)
GOM_TRA_1PNPDE20060722_211540_000000512049_00372_22971_0008.N1	DC map used (0)
GOM_TRA_1PNPDE20060722_212302_000000372049_00372_22971_0009.N1	DC map used (0)
GOM_TRA_1PNPDE20060722_212458_000000392049_00372_22971_0010.N1	DC map used (0)

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:	6.00000 %
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:	16.229	19.454	14.690
St. deviation:	4.7521	4.6355	4.7122
Maximum:	20.433	26.464	19.188
Minimum:	6.9857	8.0000	3.9785
Number of data:	11.000	20.000	19.000

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 ADU) 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:	1460.5	1445.5	1460.8	1440.8
St. deviation:	5.4324	28.261	7.4089	27.903
Maximum:	1490.0	1532.0	1516.0	1553.0
Minimum:	1440.0	1390.0	1444.0	1380.0
Number of data:	9850.0	9850.0	16750.	16750.

7.2.2 Trend of daily SATU NEA St. deviation during the last two months (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_AXVIEC20030716_105425_20030716_120000_20100101_000000	1	22-JUL-2006 00:01:08
CALIBRATION_DATABASE	GOM_CAL_AXVIEC20060712_153513_20060710_000000_20100101_000000	1	22-JUL-2006 00:01:08
LEVEL-1B_PROC_CONFIG	GOM_PR1_AXVIEC20040401_083133_20020324_200000_20100101_000000	1	22-JUL-2006 00:01:08
STAR_CATALOGUE	GOM_CAT_AXVIEC20020121_161009_20020101_000000_20200101_000000	1	22-JUL-2006 00:01:08
STELLAR_SPECTRA_DATABANK	GOM_STS_AXVIEC20020121_165822_20020101_000000_20200101_000000	1	22-JUL-2006 00:01:08
ECMWF_FILE	AUX_ECF_AXNECM20060721_062500_20060721_210000_20060722_090000	1	22-JUL-2006 00:01:08
ECMWF_FILE	AUX_ECF_AXNECM20060721_191111_20060722_030000_20060722_150000	16	22-JUL-2006 04:25:47
ECMWF_FILE	AUX_ECF_AXNECM20060722_062130_20060722_150000_20060723_030000	29	22-JUL-2006 20:16:23
ECMWF_FILE	AUX_ECF_AXNECM20060722_063107_20060722_210000_20060723_090000	40	22-JUL-2006 21:29:34
OPTIONAL_ECMWF_FILE	NOT USED	1	22-JUL-2006 00:01:08
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20060721_233900_000057382049_00359_22958_0174.N1	1	22-JUL-2006 00:01:08
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20060722_023420_000057382049_00361_22960_0176.N1	14	22-JUL-2006 02:45:11
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20060722_041517_000057382049_00362_22961_0178.N1	16	22-JUL-2006 04:25:47
ORBIT_DATA_FILE	AUX_FPO_AXVPDS20060721_234106_20060721_185252_20060731_201905	29	22-JUL-2006 20:16:23
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20060722_201139_000041442049_00372_22971_0179.N1	40	22-JUL-2006 21:29:34

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