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	05DEC2008 05:39:11
Data source version	GOMOS/5.00
Start time of products	02DEC2008 00:03:25
Stop time of products	02DEC2008 03:27:55
Store outputs in DB	Yes
Nb of level 1b prods	49
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-DEC-2008 23:59:40	4GamCrv	100	35340

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_1PNPDE20081202_000325_000000452074_00202_35326_7382.N1	02-DEC-2008 00:03:25	Bright	44.500	36	50Alp UMa	1.8000	6300.0	89	35326	No
2	GOM_TRA_1PNPDE20081202_000501_000000682074_00202_35326_7383.N1	02-DEC-2008 00:05:01	Bright	68.000	82	48Bet UMa	2.3650	10600.	136	35326	No
3	GOM_TRA_1PNPDE20081202_000643_000000382074_00202_35326_7384.N1	02-DEC-2008 00:06:43	Bright	38.000	32	77Eps UMa	1.7630	11000.	76	35326	No
4	GOM_TRA_1PNPDE20081202_000933_000000532074_00202_35326_7385.N1	02-DEC-2008 00:09:33	Bright	53.000	174	52Psi UMa	3.0040	4400.0	106	35326	No
5	GOM_TRA_1PNPDE20081202_001219_000000402074_00202_35326_7386.N1	02-DEC-2008 00:12:19	Bright	39.500	152	12Alp2CVn	2.8900	11000.	79	35326	No
6	GOM_TRA_1PNPDE20081202_002205_000000602074_00202_35326_7387.N1	02-DEC-2008 00:22:05	Bright	59.500	62	94Bet Leo	2.1360	9700.0	119	35326	No
7	GOM_TRA_1PNPDE20081202_002521_000000432074_00202_35326_7388.N1	02-DEC-2008 00:25:21	Bright	43.000	121	29Gam Vir	2.7400	7200.0	86	35326	No
8	GOM_TRA_1PNPDE20081202_003105_000000472074_00202_35326_7522.N1	02-DEC-2008 00:31:05	Dark	47.000	100	4Gam Crv	2.5800	13100.	94	35326	No
9	GOM_TRA_1PNPDE20081202_003240_000000502074_00202_35326_7523.N1	02-DEC-2008 00:32:40	Dark	49.500	171	2Eps Crv	3.0010	4250.0	99	35326	No
10	GOM_TRA_1PNPDE20081202_005047_000000482074_00203_35327_7524.N1	02-DEC-2008 00:50:47	Dark	48.000	34	Gam2Vel	1.7930	23000.	96	35327	No
11	GOM_TRA_1PNPDE20081202_005235_000000542074_00203_35327_7525.N1	02-DEC-2008 00:52:35	Dark	53.500	70	Zet Pup	2.2460	39000.	107	35327	No
12	GOM_TRA_1PNPDE20081202_005600_000000592074_00203_35327_7526.N1	02-DEC-2008 00:56:00	Dark	58.500	117	Pi Pup	2.7060	3800.0	117	35327	No
13	GOM_TRA_1PNPDE20081202_005827_000000662074_00203_35327_7527.N1	02-DEC-2008 00:58:27	Dark	66.000	88	31Eta CMa	2.4480	20000.	132	35327	No
14	GOM_TRA_1PNPDE20081202_010027_000000282074_00203_35327_7528.N1	02-DEC-2008 01:00:27	Dark	28.000	37	25Del CMa	1.8300	5900.0	56	35327	No
15	GOM_TRA_1PNPDE20081202_010533_000000672074_00203_35327_7529.N1	02-DEC-2008 01:05:33	Straylight	67.000	47	2Bet CMa	1.9760	28000.	134	35327	No
16	GOM_TRA_1PNPDE20081202_010937_000000622074_00203_35327_7530.N1	02-DEC-2008 01:09:37	Straylight	61.500	7	19Bet Ori	0.10000	14000.	123	35327	No
17	GOM_TRA_1PNPDE20081202_011233_000000622074_00203_35327_7531.N1	02-DEC-2008 01:12:33	Twi_and_stray	61.500	30	46Eps Ori	1.6940	30000.	123	35327	No
18	GOM_TRA_1PNPDE20081202_011513_000000612074_00203_35327_7532.N1	02-DEC-2008 01:15:13	Twi_and_stray	61.000	27	24Gam Ori	1.6360	26000.	122	35327	No
19	GOM_TRA_1PNPDE20081202_011732_000000542074_00203_35327_7533.N1	02-DEC-2008 01:17:32	Bright	53.500	13	87Alp Tau	0.86700	3800.0	107	35327	No
20	GOM_TRA_1PNPDE20081202_012114_000000542074_00203_35327_7534.N1	02-DEC-2008 01:21:14	Bright	54.000	176	23Zet Tau	3.0200	22000.	108	35327	No
21	GOM_TRA_1PNPDE20081202_012320_000000472074_00203_35327_7535.N1	02-DEC-2008 01:23:20	Bright	46.500	114	3Iot Aur	2.6930	4600.0	93	35327	No
22	GOM_TRA_1PNPDE20081202_012742_000000472074_00203_35327_7536.N1	02-DEC-2008 01:27:42	Bright	46.500	6	13Alp Aur	0.080000	3400.0	93	35327	No
23	GOM_TRA_1PNPDE20081202_012926_000000502074_00203_35327_7537.N1	02-DEC-2008 01:29:26	Bright	49.500	42	34Bet Aur	1.9000	10200.	99	35327	No
24	GOM_TRA_1PNPDE20081202_014400_000000462074_00203_35327_7538.N1	02-DEC-2008 01:44:00	Bright	45.500	36	50Alp UMa	1.8000	6300.0	91	35327	No
25	GOM_TRA_1PNPDE20081202_014536_000000462074_00203_35327_7539.N1	02-DEC-2008 01:45:36	Bright	45.500	82	48Bet UMa	2.3650	10600.	91	35327	No
26	GOM_TRA_1PNPDE20081202_014719_000000392074_00203_35327_7540.N1	02-DEC-2008 01:47:19	Bright	38.500	32	77Eps UMa	1.7630	11000.	77	35327	No
27	GOM_TRA_1PNPDE20081202_015009_000000532074_00203_35327_7541.N1	02-DEC-2008 01:50:09	Bright	52.500	174	52Psi UMa	3.0040	4400.0	105	35327	No
28	GOM_TRA_1PNPDE20081202_015255_000000402074_00203_35327_7542.N1	02-DEC-2008 01:52:55	Bright	39.500	152	12Alp2CVn	2.8900	11000.	79	35327	No
29	GOM_TRA_1PNPDE20081202_020242_000000832074_00203_35327_7543.N1	02-DEC-2008 02:02:42	Bright	83.000	62	94Bet Leo	2.1360	9700.0	166	35327	No
30	GOM_TRA_1PNPDE20081202_020557_000000452074_00203_35327_7649.N1	02-DEC-2008 02:05:57	Bright	45.000	121	29Gam Vir	2.7400	7200.0	90	35327	No
31	GOM_TRA_1PNPDE20081202_021141_000000462074_00203_35327_7650.N1	02-DEC-2008 02:11:41	Dark	46.000	100	4Gam Crv	2.5800	13100.	92	35327	No
32	GOM_TRA_1PNPDE20081202_021317_000000502074_00203_35327_7651.N1	02-DEC-2008 02:13:17	Dark	50.000	171	2Eps Crv	3.0010	4250.0	100	35327	No
33	GOM_TRA_1PNPDE20081202_023124_000000522074_00204_35328_7652.N1	02-DEC-2008 02:31:24	Dark	52.000	34	Gam2Vel	1.7930	23000.	104	35328	No
34	GOM_TRA_1PNPDE20081202_023312_000000572074_00204_35328_7653.N1	02-DEC-2008 02:33:12	Dark	56.500	70	Zet Pup	2.2460	39000.	113	35328	No
35	GOM_TRA_1PNPDE20081202_023637_000000582074_00204_35328_7654.N1	02-DEC-2008 02:36:37	Dark	58.000	117	Pi Pup	2.7060	3800.0	116	35328	No
36	GOM_TRA_1PNPDE20081202_023904_000000652074_00204_35328_7655.N1	02-DEC-2008 02:39:04	Dark	65.000	88	31Eta CMa	2.4480	20000.	130	35328	No
37	GOM_TRA_1PNPDE20081202_024104_000000312074_00204_35328_7656.N1	02-DEC-2008 02:41:04	Dark	31.000	37	25Del CMa	1.8300	5900.0	62	35328	No
38	GOM_TRA_1PNPDE20081202_024609_000000672074_00204_35328_7657.N1	02-DEC-2008 02:46:09	Straylight	66.500	47	2Bet CMa	1.9760	28000.	133	35328	No
39	GOM_TRA_1PNPDE20081202_025013_000000672074_00204_35328_7658.N1	02-DEC-2008 02:50:13	Straylight	67.000	7	19Bet Ori	0.10000	14000.	134	35328	No
40	GOM_TRA_1PNPDE20081202_025308_000000582074_00204_35328_7659.N1	02-DEC-2008 02:53:08	Twi_and_stray	58.000	30	46Eps Ori	1.6940	30000.	116	35328	No
41	GOM_TRA_1PNPDE20081202_025549_000000592074_00204_35328_7660.N1	02-DEC-2008 02:55:49	Twi_and_stray	58.500	27	24Gam Ori	1.6360	26000.	117	35328	No
42	GOM_TRA_1PNPDE20081202_025808_000000612074_00204_35328_7661.N1	02-DEC-2008 02:58:08	Bright	60.500	13	87Alp Tau	0.86700	3800.0	121	35328	No
43	GOM_TRA_1PNPDE20081202_030150_000000532074_00204_35328_7662.N1	02-DEC-2008 03:01:50	Bright	53.000	176	23Zet Tau	3.0200	22000.	106	35328	No
44	GOM_TRA_1PNPDE20081202_030355_000000462074_00204_35328_7663.N1	02-DEC-2008 03:03:55	Bright	46.000	114	3Iot Aur	2.6930	4600.0	92	35328	No
45	GOM_TRA_1PNPDE20081202_030817_000000462074_00204_35328_7664.N1	02-DEC-2008 03:08:17	Bright	46.000	6	13Alp Aur	0.080000	3400.0	92	35328	No
46	GOM_TRA_1PNPDE20081202_031001_000000492074_00204_35328_7665.N1	02-DEC-2008 03:10:01	Bright	49.000	42	34Bet Aur	1.9000	10200.	98	35328	No
47	GOM_TRA_1PNPDE20081202_032436_000000462074_00204_35328_7816.N1	02-DEC-2008 03:24:36	Bright	45.500	36	50Alp UMa	1.8000	6300.0	91	35328	No
48	GOM_TRA_1PNPDE20081202_032612_000000452074_00204_35328_7817.N1	02-DEC-2008 03:26:12	Bright	45.000	82	48Bet UMa	2.3650	10600.	90	35328	No
49	GOM_TRA_1PNPDE20081202_032755_000000402074_00204_35328_7818.N1	02-DEC-2008 03:27:55	Bright	40.000	32	77Eps UMa	1.7630	11000.	80	35328	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:	40.8163 %
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:	25.237	18.417	NaN
St. deviation:	22.940	5.9078	NaN
Maximum:	81.927	23.633	NaN
Minimum:	13.328	3.1588	NaN
Number of data:	14.000	27.000	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:	0.35064	-1.0815	0.29316	-1.2099
St. deviation:	0.68749	1.3095	0.79416	1.2717
Maximum:	11.100	3.4000	7.1000	6.4000
Minimum:	-4.3000	-15.400	-6.2000	-8.6000
Number of data:	17500.	17500.	29450.	29450.

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-DEC-2008 00:03:25
CALIBRATION_DATABASE	GOM_CAL_AXVIEC20081125_092015_20081123_000000_20100101_000000	1	02-DEC-2008 00:03:25
LEVEL-1B_PROC_CONFIG	GOM_PR1_AXNIEC20050627_151042_20020301_000000_20100101_000000	1	02-DEC-2008 00:03:25
STAR_CATALOGUE	GOM_CAT_AXVIEC20020121_161009_20020101_000000_20200101_000000	1	02-DEC-2008 00:03:25
STELLAR_SPECTRA_DATABANK	GOM_STS_AXNIEC20040308_103538_20020101_160000_20100101_000000	1	02-DEC-2008 00:03:25
ECMWF_FILE	AUX_ECF_AXNECM20081201_072111_20081201_210000_20081202_090000	1	02-DEC-2008 00:03:25
ECMWF_FILE	AUX_ECF_AXNECM20081201_190112_20081202_030000_20081202_150000	47	02-DEC-2008 03:24:36
OPTIONAL_ECMWF_FILE	MISSING	1	02-DEC-2008 00:03:25
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20081201_205726_000060572074_00200_35324_6873.N1	1	02-DEC-2008 00:03:25
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20081201_224341_000057382074_00201_35325_6874.N1	8	02-DEC-2008 00:31:05
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20081202_002438_000057382074_00202_35326_6875.N1	30	02-DEC-2008 02:05:57
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20081202_020017_000044632074_00203_35327_6876.N1	47	02-DEC-2008 03:24:36

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