GOMOS Daily Reports

You must have a javascript-enabled browser and javacript and stylesheets must be enabled to use some of the functions on this site.

ERS

Envisat

ALOS-ADEN

PCS Home

18-May-2013

GOMOS

Articles & Studies

Consolidated Datasets

Documentation

Mission events history

Planned occultation maps

Search:

Select period:

GOMOS Daily Report 19-OCT-2004

Level 0 and Level 1 products

SUMMARY

1. General Info

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

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

2.2 Level 1 products arrived in PCF during reporting period

3. Plot of Spectrometers and Photometers temperatures

4. Dark Charge monitoring

4.1 Products that did not use the Dark Sky Area observation for DC computation

4.2 Plot of Dark Charge

5. Demodulation correction and quality product information monitoring

5.1 Percentage of products with some flags set

5.2 Plot of quality information per product (time dependant)

5.3 Plot of quality information per product (world map)

6. Star tangent altitude lost

6.1 Statistics on star tangent altitude lost

6.2 Plot of star tangent altitude lost: DARK products

6.3 Plot of star tangent altitude lost: BRIGHT products

6.3 Plot of star tangent altitude lost: TWILIGHT products

7.Statistics on SATU Noise Equivalent Angle

Level 2 products

1. General Info

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	21OCT2004 05:01:42
Data source version	GOMOS/4.02
Start time of products	QDS_YESTERDAY(/START)-1D (19OCT2004 00:00:00)
Stop time of products	QDS_YESTERDAY(/STOP)-1D (20OCT2004 00:00:00)
Store outputs flag	1
Nb of level 1b prods	49
Nb of prods with errors	1

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

Filename	UTC Start time	Limb	Duration	Star Id	Star Name	Star Mag	Star Temp	Nb Meas	Orbit	Prod. error
GOM_TRA_1PNPDE20041019_004118_000000562031_00203_13784_0002.N1	19-OCT-2004 00:41:18	Dark	56.000	34	Gam2Vel	1.7930	23000.	112	13784	No
GOM_TRA_1PNPDE20041019_004311_000000422031_00203_13784_0003.N1	19-OCT-2004 00:43:11	Dark	41.500	29	Bet Car	1.6720	10200.	83	13784	No
GOM_TRA_1PNPDE20041019_004658_000000522031_00203_13784_0004.N1	19-OCT-2004 00:46:58	Dark	52.000	2	Alp Car	-0.73600	7000.0	104	13784	No
GOM_TRA_1PNPDE20041019_004949_000002182031_00203_13784_0005.N1	19-OCT-2004 00:49:49	Dark	217.50	1	9Alp CMa	-1.4400	11000.	435	13784	No
GOM_TRA_1PNPDE20041019_005542_000000472031_00203_13784_0006.N1	19-OCT-2004 00:55:42	Dark	46.500	9	Alp Eri	0.45300	24000.	93	13784	No
GOM_TRA_1PNPDE20041019_005827_000000482031_00203_13784_0007.N1	19-OCT-2004 00:58:27	Dark	48.000	157	The1Eri	2.9060	9300.0	96	13784	No
GOM_TRA_1PNPDE20041019_010039_000000452031_00203_13784_0008.N1	19-OCT-2004 01:00:39	Dark	45.000	84	Alp Phe	2.3970	4500.0	90	13784	No
GOM_TRA_1PNPDE20041019_010240_000002142031_00203_13784_0009.N1	19-OCT-2004 01:02:40	Bright	214.00	101	11Alp Lep	2.5820	7000.0	428	13784	No
GOM_TRA_1PNPDE20041019_010713_000000452031_00203_13784_0010.N1	19-OCT-2004 01:07:13	Bright	44.500	52	16Bet Cet	2.0370	4500.0	89	13784	No
GOM_TRA_1PNPDE20041019_011646_000000382031_00203_13784_0011.N1	19-OCT-2004 01:16:46	Bright	37.500	140	88Gam Peg	2.8340	26000.	75	13784	No
GOM_TRA_1PNPDE20041019_011925_000000462031_00203_13784_0012.N1	19-OCT-2004 01:19:25	Bright	45.500	105	6Bet Ari	2.6450	8900.0	91	13784	No
GOM_TRA_1PNPDE20041019_012201_000000382031_00203_13784_0013.N1	19-OCT-2004 01:22:01	Bright	37.500	164	44Eta Peg	2.9480	5400.0	75	13784	No
GOM_TRA_1PNPDE20041019_012418_000000472031_00203_13784_0014.N1	19-OCT-2004 01:24:18	Bright	46.500	173	4Bet Tri	3.0040	8900.0	93	13784	No
GOM_TRA_1PNPDE20041019_012614_000000462031_00203_13784_0015.N1	19-OCT-2004 01:26:14	Bright	45.500	73	57Gam1And	2.2600	13100.	91	13784	No
GOM_TRA_1PNPDE20041019_012837_000000372031_00203_13784_0016.N1	19-OCT-2004 01:28:37	Bright	36.500	68	18Alp Cas	2.2250	4500.0	73	13784	No
GOM_TRA_1PNPDE20041019_012956_000000372031_00203_13784_0017.N1	19-OCT-2004 01:29:56	Bright	36.500	76	27Gam Cas	2.3000	30000.	73	13784	No
GOM_TRA_1PNPDE20041019_013151_000000402031_00203_13784_0018.N1	19-OCT-2004 01:31:51	Bright	39.500	89	5Alp Cep	2.4510	8000.0	79	13784	No
GOM_TRA_1PNPDE20041019_013743_000000382031_00203_13784_0019.N1	19-OCT-2004 01:37:43	Bright	37.500	49	1Alp UMi	1.9900	6300.0	75	13784	No
GOM_TRA_1PNPDE20041019_020911_000000602031_00203_13784_0000.N1	19-OCT-2004 02:09:11	Twilight	59.500	48	30Alp Hya	1.9770	4100.0	119	13784	No
GOM_TRA_1PNPDE20041019_021722_000000412031_00203_13784_0001.N1	19-OCT-2004 02:17:22	Dark	40.500	113	Mu Vel	2.6920	5000.0	81	13784	No
GOM_TRA_1PNPDE20041019_022155_000000462031_00204_13785_0002.N1	19-OCT-2004 02:21:55	Dark	46.000	34	Gam2Vel	1.7930	23000.	92	13785	No
GOM_TRA_1PNPDE20041019_022456_000000792031_00204_13785_0003.N1	19-OCT-2004 02:24:56	Dark	79.000	37	25Del CMa	1.8300	5900.0	158	13785	No
GOM_TRA_1PNPDE20041019_022732_000000542031_00204_13785_0004.N1	19-OCT-2004 02:27:32	Dark	54.000	2	Alp Car	-0.73600	7000.0	108	13785	No
GOM_TRA_1PNPDE20041019_023029_000002042031_00204_13785_0005.N1	19-OCT-2004 02:30:29	Dark	203.50	1	9Alp CMa	-1.4400	11000.	407	13785	No
GOM_TRA_1PNPDE20041019_023619_000000452031_00204_13785_0006.N1	19-OCT-2004 02:36:19	Dark	44.500	9	Alp Eri	0.45300	24000.	89	13785	No
GOM_TRA_1PNPDE20041019_023902_000000512031_00204_13785_0007.N1	19-OCT-2004 02:39:02	Dark	50.500	157	The1Eri	2.9060	9300.0	101	13785	No
GOM_TRA_1PNPDE20041019_024115_000000412031_00204_13785_0008.N1	19-OCT-2004 02:41:15	Dark	40.500	84	Alp Phe	2.3970	4500.0	81	13785	No
GOM_TRA_1PNPDE20041019_024749_000000432031_00204_13785_0009.N1	19-OCT-2004 02:47:49	Bright	43.000	52	16Bet Cet	2.0370	4500.0	86	13785	No
GOM_TRA_1PNPDE20041019_025722_000000392031_00204_13785_0010.N1	19-OCT-2004 02:57:22	Bright	39.000	140	88Gam Peg	2.8340	26000.	78	13785	No
GOM_TRA_1PNPDE20041019_030000_000000472031_00204_13785_0011.N1	19-OCT-2004 03:00:00	Bright	46.500	105	6Bet Ari	2.6450	8900.0	93	13785	No
GOM_TRA_1PNPDE20041019_030237_000000392031_00204_13785_0012.N1	19-OCT-2004 03:02:37	Bright	39.000	164	44Eta Peg	2.9480	5400.0	78	13785	No
GOM_TRA_1PNPDE20041019_030453_000000462031_00204_13785_0013.N1	19-OCT-2004 03:04:53	Bright	46.000	173	4Bet Tri	3.0040	8900.0	92	13785	No
GOM_TRA_1PNPDE20041019_030649_000000452031_00204_13785_0014.N1	19-OCT-2004 03:06:49	Bright	45.000	73	57Gam1And	2.2600	13100.	90	13785	No
GOM_TRA_1PNPDE20041019_030912_000000412031_00204_13785_0015.N1	19-OCT-2004 03:09:12	Bright	41.000	68	18Alp Cas	2.2250	4500.0	82	13785	No
GOM_TRA_1PNPDE20041019_031032_000000392031_00204_13785_0016.N1	19-OCT-2004 03:10:32	Bright	39.000	76	27Gam Cas	2.3000	30000.	78	13785	No
GOM_TRA_1PNPDE20041019_031228_000000402031_00204_13785_0017.N1	19-OCT-2004 03:12:28	Bright	40.000	89	5Alp Cep	2.4510	8000.0	80	13785	No
GOM_TRA_1PNPDE20041019_031817_000000372031_00204_13785_0018.N1	19-OCT-2004 03:18:17	Bright	37.000	49	1Alp UMi	1.9900	6300.0	74	13785	No
GOM_TRA_1PNPDE20041019_032635_000000382031_00204_13785_0001.N1	19-OCT-2004 03:26:35	Bright	38.000	36	50Alp UMa	1.8000	6300.0	76	13785	No
GOM_TRA_1PNPDE20041019_032809_000000382031_00204_13785_0002.N1	19-OCT-2004 03:28:09	Bright	38.000	82	48Bet UMa	2.3650	10600.	76	13785	No
GOM_TRA_1PNPDE20041019_033136_000000372031_00204_13785_0003.N1	19-OCT-2004 03:31:36	Bright	36.500	174	52Psi UMa	3.0040	4400.0	73	13785	No
GOM_TRA_1PNPDE20041019_033948_000001432031_00204_13785_0004.N1	19-OCT-2004 03:39:48	Twilight	142.50	17	78Bet Gem	1.1610	4500.0	285	13785	No
GOM_TRA_1PNPDE20041019_034947_000000612031_00204_13785_0005.N1	19-OCT-2004 03:49:47	Twilight	61.000	48	30Alp Hya	1.9770	4100.0	122	13785	No
GOM_TRA_1PNPDE20041019_035759_000000422031_00204_13785_0006.N1	19-OCT-2004 03:57:59	Dark	41.500	113	Mu Vel	2.6920	5000.0	83	13785	No
GOM_TRA_1PNPDE20041019_063144_000000402031_00206_13787_0021.N1	19-OCT-2004 06:31:44	Bright	39.500	76	27Gam Cas	2.3000	30000.	79	13787	No
GOM_TRA_1PNPDE20041019_205747_000002212031_00215_13796_0000.N1	19-OCT-2004 20:57:47	Dark	221.00	1	9Alp CMa	-1.4400	11000.	442	13796	Yes
GOM_TRA_1PNPDE20041019_210258_000000452031_00215_13796_0001.N1	19-OCT-2004 21:02:58	Dark	44.500	9	Alp Eri	0.45300	24000.	89	13796	No
GOM_TRA_1PNPDE20041019_210545_000000452031_00215_13796_0002.N1	19-OCT-2004 21:05:45	Dark	44.500	157	The1Eri	2.9060	9300.0	89	13796	No
GOM_TRA_1PNPDE20041019_211426_000000472031_00215_13796_0004.N1	19-OCT-2004 21:14:26	Bright	46.500	52	16Bet Cet	2.0370	4500.0	93	13796	No
GOM_TRA_1PNPDE20041019_212358_000000382031_00215_13796_0005.N1	19-OCT-2004 21:23:58	Bright	38.000	140	88Gam Peg	2.8340	26000.	76	13796	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_1PNPDE20041019_205747_000002212031_00215_13796_0000.N1	DC map with no T dep. (12)
GOM_TRA_1PNPDE20041019_210258_000000452031_00215_13796_0001.N1	DC map used (0)
GOM_TRA_1PNPDE20041019_210545_000000452031_00215_13796_0002.N1	DC map used (0)
GOM_TRA_1PNPDE20041019_211426_000000472031_00215_13796_0004.N1	DC map used (0)
GOM_TRA_1PNPDE20041019_212358_000000382031_00215_13796_0005.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:	14.5833 %
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:	14.784	21.709	7.9887
St. deviation:	3.1345	6.0873	2.4279
Maximum:	19.765	45.571	9.7816
Minimum:	8.5906	11.047	5.2258
Number of data:	18.000	27.000	3.0000

6.2 Plot for DARK limb products

6.3 Plot for BRIGHT limb products

6.3 Plot for TWILIGHT limb products

7. 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 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.

Statistics	SATU X (D)	SATU Y (D)	SATU X (B)	SATU Y (B)
Mean:	1461.9	1448.1	1461.4	1447.2
St. deviation:	4.3387	5.3918	8.0190	8.6472
Maximum:	1500.0	1483.0	1517.0	1503.0
Minimum:	1430.0	1407.0	1408.0	1389.0
Number of data:	28950.	28950.	34350.	34350.

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