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	25NOV2008 05:33:53
Data source version	GOMOS/5.00
Start time of products	23NOV2008 03:13:56
Stop time of products	23NOV2008 22:59:38
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)

No missing products.

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_1PNPDE20081123_031356_000000462074_00075_35199_6845.N1	23-NOV-2008 03:13:56	Bright	46.000	174	52Psi UMa	3.0040	4400.0	92	35199	No
2	GOM_TRA_1PNPDE20081123_032336_000000572074_00075_35199_6846.N1	23-NOV-2008 03:23:36	Bright	57.000	96	68Del Leo	2.5600	9300.0	114	35199	No
3	GOM_TRA_1PNPDE20081123_032642_000001092074_00075_35199_6847.N1	23-NOV-2008 03:26:42	Twi_and_stray	109.00	51	41Gam1Leo	2.0100	4500.0	218	35199	No
4	GOM_TRA_1PNPDE20081123_035412_000000552074_00076_35200_6848.N1	23-NOV-2008 03:54:12	Dark	54.500	70	Zet Pup	2.2460	39000.	109	35200	No
5	GOM_TRA_1PNPDE20081123_035800_000000612074_00076_35200_6849.N1	23-NOV-2008 03:58:00	Dark	60.500	117	Pi Pup	2.7060	3800.0	121	35200	No
6	GOM_TRA_1PNPDE20081123_040201_000000732074_00076_35200_6850.N1	23-NOV-2008 04:02:01	Dark	73.000	23	21Eps CMa	1.5020	26000.	146	35200	No
7	GOM_TRA_1PNPDE20081123_040419_000000842074_00076_35200_6851.N1	23-NOV-2008 04:04:19	Straylight	84.000	179	24Omi2CMa	3.0320	24000.	168	35200	No
8	GOM_TRA_1PNPDE20081123_040938_000000502074_00076_35200_6852.N1	23-NOV-2008 04:09:38	Straylight	50.000	1	9Alp CMa	-1.4400	11000.	100	35200	No
9	GOM_TRA_1PNPDE20081123_041348_000000692074_00076_35200_6853.N1	23-NOV-2008 04:13:48	Straylight	69.000	7	19Bet Ori	0.10000	14000.	138	35200	No
10	GOM_TRA_1PNPDE20081123_041734_000000772074_00076_35200_6854.N1	23-NOV-2008 04:17:34	Twi_and_stray	76.500	30	46Eps Ori	1.6940	30000.	153	35200	No
11	GOM_TRA_1PNPDE20081123_042223_000000562074_00076_35200_6855.N1	23-NOV-2008 04:22:23	Bright	56.000	13	87Alp Tau	0.86700	3800.0	112	35200	No
12	GOM_TRA_1PNPDE20081123_042846_000000512074_00076_35200_6856.N1	23-NOV-2008 04:28:46	Bright	51.000	114	3Iot Aur	2.6930	4600.0	102	35200	No
13	GOM_TRA_1PNPDE20081123_043312_000000542074_00076_35200_6857.N1	23-NOV-2008 04:33:12	Bright	54.000	6	13Alp Aur	0.080000	3400.0	108	35200	No
14	GOM_TRA_1PNPDE20081123_043536_000000562074_00076_35200_6858.N1	23-NOV-2008 04:35:36	Bright	55.500	42	34Bet Aur	1.9000	10200.	111	35200	No
15	GOM_TRA_1PNPDE20081123_045431_000000492074_00076_35200_7334.N1	23-NOV-2008 04:54:31	Bright	49.000	174	52Psi UMa	3.0040	4400.0	98	35200	No
16	GOM_TRA_1PNPDE20081123_050413_000000562074_00076_35200_7335.N1	23-NOV-2008 05:04:13	Bright	56.000	96	68Del Leo	2.5600	9300.0	112	35200	No
17	GOM_TRA_1PNPDE20081123_050720_000001192074_00076_35200_7336.N1	23-NOV-2008 05:07:20	Twi_and_stray	119.00	51	41Gam1Leo	2.0100	4500.0	238	35200	No
18	GOM_TRA_1PNPDE20081123_053450_000000552074_00077_35201_7337.N1	23-NOV-2008 05:34:50	Dark	55.000	70	Zet Pup	2.2460	39000.	110	35201	No
19	GOM_TRA_1PNPDE20081123_053837_000000642074_00077_35201_7338.N1	23-NOV-2008 05:38:37	Dark	64.000	117	Pi Pup	2.7060	3800.0	128	35201	No
20	GOM_TRA_1PNPDE20081123_054238_000000722074_00077_35201_7339.N1	23-NOV-2008 05:42:38	Dark	71.500	23	21Eps CMa	1.5020	26000.	143	35201	No
21	GOM_TRA_1PNPDE20081123_054456_000000832074_00077_35201_7340.N1	23-NOV-2008 05:44:56	Straylight	83.000	179	24Omi2CMa	3.0320	24000.	166	35201	No
22	GOM_TRA_1PNPDE20081123_055014_000000502074_00077_35201_7341.N1	23-NOV-2008 05:50:14	Straylight	50.000	1	9Alp CMa	-1.4400	11000.	100	35201	No
23	GOM_TRA_1PNPDE20081123_055424_000000672074_00077_35201_7342.N1	23-NOV-2008 05:54:24	Straylight	66.500	7	19Bet Ori	0.10000	14000.	133	35201	No
24	GOM_TRA_1PNPDE20081123_055809_000000772074_00077_35201_7343.N1	23-NOV-2008 05:58:09	Twi_and_stray	76.500	30	46Eps Ori	1.6940	30000.	153	35201	No
25	GOM_TRA_1PNPDE20081123_060258_000000562074_00077_35201_7344.N1	23-NOV-2008 06:02:58	Bright	55.500	13	87Alp Tau	0.86700	3800.0	111	35201	No
26	GOM_TRA_1PNPDE20081123_060921_000000512074_00077_35201_7345.N1	23-NOV-2008 06:09:21	Bright	50.500	114	3Iot Aur	2.6930	4600.0	101	35201	No
27	GOM_TRA_1PNPDE20081123_061347_000000502074_00077_35201_7346.N1	23-NOV-2008 06:13:47	Bright	50.000	6	13Alp Aur	0.080000	3400.0	100	35201	No
28	GOM_TRA_1PNPDE20081123_061611_000000572074_00077_35201_7347.N1	23-NOV-2008 06:16:11	Bright	57.000	42	34Bet Aur	1.9000	10200.	114	35201	No
29	GOM_TRA_1PNPDE20081123_204810_000000752074_00086_35210_7800.N1	23-NOV-2008 20:48:10	Dark	74.500	23	21Eps CMa	1.5020	26000.	149	35210	No
30	GOM_TRA_1PNPDE20081123_205027_000000852074_00086_35210_7801.N1	23-NOV-2008 20:50:27	Straylight	84.500	179	24Omi2CMa	3.0320	24000.	169	35210	No
31	GOM_TRA_1PNPDE20081123_205539_000000722074_00086_35210_7802.N1	23-NOV-2008 20:55:39	Straylight	72.000	1	9Alp CMa	-1.4400	11000.	144	35210	No
32	GOM_TRA_1PNPDE20081123_205946_000000632074_00086_35210_7803.N1	23-NOV-2008 20:59:46	Straylight	63.000	7	19Bet Ori	0.10000	14000.	126	35210	No
33	GOM_TRA_1PNPDE20081123_210326_000000762074_00086_35210_7804.N1	23-NOV-2008 21:03:26	Twi_and_stray	75.500	30	46Eps Ori	1.6940	30000.	151	35210	No
34	GOM_TRA_1PNPDE20081123_210817_000000562074_00086_35210_7805.N1	23-NOV-2008 21:08:17	Bright	56.000	13	87Alp Tau	0.86700	3800.0	112	35210	No
35	GOM_TRA_1PNPDE20081123_211437_000000512074_00086_35210_7806.N1	23-NOV-2008 21:14:37	Bright	51.000	114	3Iot Aur	2.6930	4600.0	102	35210	No
36	GOM_TRA_1PNPDE20081123_211903_000000522074_00086_35210_7807.N1	23-NOV-2008 21:19:03	Bright	52.000	6	13Alp Aur	0.080000	3400.0	104	35210	No
37	GOM_TRA_1PNPDE20081123_212124_000000572074_00086_35210_7808.N1	23-NOV-2008 21:21:24	Bright	56.500	42	34Bet Aur	1.9000	10200.	113	35210	No
38	GOM_TRA_1PNPDE20081123_214029_000000492074_00086_35210_7809.N1	23-NOV-2008 21:40:29	Bright	48.500	174	52Psi UMa	3.0040	4400.0	97	35210	No
39	GOM_TRA_1PNPDE20081123_215018_000000582074_00086_35210_7810.N1	23-NOV-2008 21:50:18	Bright	58.000	96	68Del Leo	2.5600	9300.0	116	35210	No
40	GOM_TRA_1PNPDE20081123_215334_000001232074_00086_35210_7811.N1	23-NOV-2008 21:53:34	Twi_and_stray	122.50	51	41Gam1Leo	2.0100	4500.0	245	35210	No
41	GOM_TRA_1PNPDE20081123_222101_000000542074_00087_35211_7974.N1	23-NOV-2008 22:21:01	Dark	54.000	70	Zet Pup	2.2460	39000.	108	35211	No
42	GOM_TRA_1PNPDE20081123_222446_000000652074_00087_35211_7975.N1	23-NOV-2008 22:24:46	Dark	65.000	117	Pi Pup	2.7060	3800.0	130	35211	No
43	GOM_TRA_1PNPDE20081123_222846_000000732074_00087_35211_7976.N1	23-NOV-2008 22:28:46	Dark	73.000	23	21Eps CMa	1.5020	26000.	146	35211	No
44	GOM_TRA_1PNPDE20081123_223104_000000832074_00087_35211_7977.N1	23-NOV-2008 22:31:04	Straylight	82.500	179	24Omi2CMa	3.0320	24000.	165	35211	No
45	GOM_TRA_1PNPDE20081123_223615_000000722074_00087_35211_7978.N1	23-NOV-2008 22:36:15	Straylight	72.000	1	9Alp CMa	-1.4400	11000.	144	35211	No
46	GOM_TRA_1PNPDE20081123_224021_000000682074_00087_35211_7979.N1	23-NOV-2008 22:40:21	Straylight	68.000	7	19Bet Ori	0.10000	14000.	136	35211	No
47	GOM_TRA_1PNPDE20081123_224401_000000762074_00087_35211_7980.N1	23-NOV-2008 22:44:01	Twi_and_stray	76.000	30	46Eps Ori	1.6940	30000.	152	35211	No
48	GOM_TRA_1PNPDE20081123_224852_000000572074_00087_35211_7981.N1	23-NOV-2008 22:48:52	Bright	57.000	13	87Alp Tau	0.86700	3800.0	114	35211	No
49	GOM_TRA_1PNPDE20081123_225512_000000512074_00087_35211_7982.N1	23-NOV-2008 22:55:12	Bright	51.000	114	3Iot Aur	2.6930	4600.0	102	35211	No
50	GOM_TRA_1PNPDE20081123_225938_000000502074_00087_35211_7983.N1	23-NOV-2008 22:59:38	Bright	50.000	6	13Alp Aur	0.080000	3400.0	100	35211	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_1PNPDE20081123_204810_000000752074_00086_35210_7800.N1	DC map used
GOM_TRA_1PNPDE20081123_205027_000000852074_00086_35210_7801.N1	DC map used
GOM_TRA_1PNPDE20081123_205539_000000722074_00086_35210_7802.N1	DC map used
GOM_TRA_1PNPDE20081123_205946_000000632074_00086_35210_7803.N1	DC map used
GOM_TRA_1PNPDE20081123_210326_000000762074_00086_35210_7804.N1	DC map used
GOM_TRA_1PNPDE20081123_210817_000000562074_00086_35210_7805.N1	DC map used
GOM_TRA_1PNPDE20081123_211437_000000512074_00086_35210_7806.N1	DC map used
GOM_TRA_1PNPDE20081123_211903_000000522074_00086_35210_7807.N1	DC map used
GOM_TRA_1PNPDE20081123_212124_000000572074_00086_35210_7808.N1	DC map used
GOM_TRA_1PNPDE20081123_214029_000000492074_00086_35210_7809.N1	DC map used
GOM_TRA_1PNPDE20081123_215018_000000582074_00086_35210_7810.N1	DC map used
GOM_TRA_1PNPDE20081123_215334_000001232074_00086_35210_7811.N1	DC map used

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:	42.0000 %
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:	15.620	18.454	NaN
St. deviation:	3.0707	3.5336	NaN
Maximum:	20.242	23.433	NaN
Minimum:	11.888	11.311	NaN
Number of data:	10.000	21.000	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:	0.36318	-1.0594	0.38657	-1.1064
St. deviation:	0.55897	1.1263	0.54930	0.92822
Maximum:	3.6000	3.6000	4.2000	3.6000
Minimum:	-3.0000	-6.9000	-3.2000	-6.0000
Number of data:	14100.	14100.	25700.	25700.

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	23-NOV-2008 03:13:56
CALIBRATION_DATABASE	GOM_CAL_AXVIEC20081117_091129_20081115_000000_20100101_000000	1	23-NOV-2008 03:13:56
LEVEL-1B_PROC_CONFIG	GOM_PR1_AXNIEC20050627_151042_20020301_000000_20100101_000000	1	23-NOV-2008 03:13:56
STAR_CATALOGUE	GOM_CAT_AXVIEC20020121_161009_20020101_000000_20200101_000000	1	23-NOV-2008 03:13:56
STELLAR_SPECTRA_DATABANK	GOM_STS_AXNIEC20040308_103538_20020101_160000_20100101_000000	1	23-NOV-2008 03:13:56
ECMWF_FILE	AUX_ECF_AXNECM20081122_190114_20081123_030000_20081123_150000	1	23-NOV-2008 03:13:56
ECMWF_FILE	AUX_ECF_AXNECM20081123_072110_20081123_150000_20081124_030000	29	23-NOV-2008 20:48:10
ECMWF_FILE	AUX_ECF_AXNECM20081123_072110_20081123_210000_20081124_090000	41	23-NOV-2008 22:21:01
OPTIONAL_ECMWF_FILE	MISSING	1	23-NOV-2008 03:13:56
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20081123_014527_000041442074_00074_35198_6824.N1	1	23-NOV-2008 03:13:56
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20081123_025950_000057382074_00075_35199_6825.N1	15	23-NOV-2008 04:54:31
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20081123_204228_000041442074_00086_35210_6827.N1	29	23-NOV-2008 20:48:10

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