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GOMOS Daily Report 23-DEC-2003

GOMOS Daily Report 23-DEC-2003


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

 
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

 
7.Statistics on SATU Noise Equivalent Angle



 

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
 27DEC2003 07:09:05
Data source version
 <Any version>
Start time of products
 23-DEC-2003 (23DEC2003 00:00:00)
Stop time of products
 24-DEC-2003 (24DEC2003 00:00:00)
Store outputs flag
 1
Nb of level 1b prods
 41
Nb of prods with errors
 0

2. Summary of products arrived in PCF

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_1PNPDE20031223_220652_000000572022_00416_09488_0000.N1
 23-DEC-2003 22:06:52
 Dark
 57.000
 117
 Pi Pup
2.7060
 3800.0
 114
 9488
 No
GOM_TRA_1PNPDE20031223_220953_000000512022_00416_09488_0001.N1
 23-DEC-2003 22:09:53
 Dark
 51.000
 23
 21Eps CMa
1.5020
 26000.
 102
 9488
 No
GOM_TRA_1PNPDE20031223_221133_000000522022_00416_09488_0002.N1
 23-DEC-2003 22:11:33
 Dark
 52.000
 179
 24Omi2CMa
3.0320
 24000.
 104
 9488
 No
GOM_TRA_1PNPDE20031223_221402_000000492022_00416_09488_0003.N1
 23-DEC-2003 22:14:02
 Dark
 48.500
 47
 2Bet CMa
1.9760
 28000.
 97
 9488
 No
GOM_TRA_1PNPDE20031223_221652_000000462022_00416_09488_0004.N1
 23-DEC-2003 22:16:52
 Dark
 46.000
 56
 53Kap Ori
2.0650
 30000.
 92
 9488
 No
GOM_TRA_1PNPDE20031223_221823_000000422022_00416_09488_0005.N1
 23-DEC-2003 22:18:23
 Dark
 42.000
 128
 67Bet Eri
2.7840
 9700.0
 84
 9488
 No
GOM_TRA_1PNPDE20031223_221945_000000472022_00416_09488_0006.N1
 23-DEC-2003 22:19:45
 Dark
 46.500
 72
 34Del Ori
2.2500
 30000.
 93
 9488
 No
GOM_TRA_1PNPDE20031223_222217_000000592022_00416_09488_0007.N1
 23-DEC-2003 22:22:17
 Dark
 59.000
 14
 58Alp Ori
0.87000
 3000.0
 118
 9488
 No
GOM_TRA_1PNPDE20031223_222439_000000462022_00416_09488_0008.N1
 23-DEC-2003 22:24:39
 Dark
 46.000
 13
 87Alp Tau
0.86700
 3800.0
 92
 9488
 No
GOM_TRA_1PNPDE20031223_222621_000000412022_00416_09488_0009.N1
 23-DEC-2003 22:26:21
 Bright
 41.000
 176
 23Zet Tau
3.0200
 22000.
 82
 9488
 No
GOM_TRA_1PNPDE20031223_222826_000000422022_00416_09488_0010.N1
 23-DEC-2003 22:28:26
 Bright
 42.000
 28
 12Bet Tau
1.6500
 15200.
 84
 9488
 No
GOM_TRA_1PNPDE20031223_223122_000000372022_00416_09488_0011.N1
 23-DEC-2003 22:31:22
 Bright
 37.000
 149
 45Eps Per
2.8880
 30000.
 74
 9488
 No
GOM_TRA_1PNPDE20031223_223321_000000412022_00416_09488_0012.N1
 23-DEC-2003 22:33:21
 Bright
 40.500
 6
 13Alp Aur
0.080000
 3400.0
 81
 9488
 No
GOM_TRA_1PNPDE20031223_223534_000000382022_00416_09488_0013.N1
 23-DEC-2003 22:35:34
 Bright
 38.000
 160
 23Gam Per
2.9300
 4700.0
 76
 9488
 No
GOM_TRA_1PNPDE20031223_223907_000000392022_00416_09488_0014.N1
 23-DEC-2003 22:39:07
 Bright
 39.000
 110
 37Del Cas
2.6780
 8900.0
 78
 9488
 No
GOM_TRA_1PNPDE20031223_224513_000000372022_00416_09488_0015.N1
 23-DEC-2003 22:45:13
 Bright
 37.000
 49
 1Alp UMi
1.9900
 6300.0
 74
 9488
 No
GOM_TRA_1PNPDE20031223_224950_000000362022_00416_09488_0016.N1
 23-DEC-2003 22:49:50
 Bright
 36.000
 60
 7Bet UMi
2.0810
 3950.0
 72
 9488
 No
GOM_TRA_1PNPDE20031223_225323_000000382022_00416_09488_0017.N1
 23-DEC-2003 22:53:23
 Bright
 38.000
 119
 14Eta Dra
2.7270
 4700.0
 76
 9488
 No
GOM_TRA_1PNPDE20031223_225453_000000442022_00416_09488_0018.N1
 23-DEC-2003 22:54:53
 Bright
 44.000
 55
 79Zet UMa
2.0600
 10200.
 88
 9488
 No
GOM_TRA_1PNPDE20031223_225658_000000442022_00416_09488_0019.N1
 23-DEC-2003 22:56:58
 Bright
 44.000
 39
 85Eta UMa
1.8540
 24000.
 88
 9488
 No
GOM_TRA_1PNPDE20031223_230036_000000402022_00416_09488_0020.N1
 23-DEC-2003 23:00:36
 Bright
 40.000
 180
 27Gam Boo
3.0400
 8000.0
 80
 9488
 No
GOM_TRA_1PNPDE20031223_230400_000000402022_00416_09488_0021.N1
 23-DEC-2003 23:04:00
 Bright
 40.000
 83
2.3780
 11000.
 80
 9488
 No
GOM_TRA_1PNPDE20031223_230738_000000492022_00416_09488_0022.N1
 23-DEC-2003 23:07:38
 Bright
 48.500
 111
 8Eta Boo
2.6800
 6000.0
 97
 9488
 No
GOM_TRA_1PNPDE20031223_231225_000000732022_00416_09488_0023.N1
 23-DEC-2003 23:12:25
 Dark
 73.000
 138
 47Eps Vir
2.8280
 4700.0
 146
 9488
 No
GOM_TRA_1PNPDE20031223_231622_000000392022_00416_09488_0024.N1
 23-DEC-2003 23:16:22
 Bright
 38.500
 122
 9Alp2Lib
2.7470
 9700.0
 77
 9488
 No
GOM_TRA_1PNPDE20031223_231826_000000632022_00416_09488_0025.N1
 23-DEC-2003 23:18:26
 Dark
 62.500
 15
 67Alp Vir
0.97600
 28000.
 125
 9488
 No
GOM_TRA_1PNPDE20031223_232335_000000422022_00416_09488_0026.N1
 23-DEC-2003 23:23:35
 Dark
 41.500
 81
 Eta Cen
2.3560
 28000.
 83
 9488
 No
GOM_TRA_1PNPDE20031223_232555_000000402022_00416_09488_0027.N1
 23-DEC-2003 23:25:55
 Dark
 40.000
 95
 Zet Cen
2.5450
 26000.
 80
 9488
 No
GOM_TRA_1PNPDE20031223_232811_000000462022_00416_09488_0028.N1
 23-DEC-2003 23:28:11
 Dark
 45.500
 4
 Alp1Cen
-0.010000
 5800.0
 91
 9488
 No
GOM_TRA_1PNPDE20031223_233134_000000472022_00417_09489_0029.N1
 23-DEC-2003 23:31:34
 Dark
 47.000
 12
 Alp1Cru
0.77500
 30000.
 94
 9489
 No
GOM_TRA_1PNPDE20031223_233706_000000492022_00417_09489_0030.N1
 23-DEC-2003 23:37:06
 Dark
 48.500
 29
 Bet Car
1.6720
 10200.
 97
 9489
 No
GOM_TRA_1PNPDE20031223_233828_000000462022_00417_09489_0031.N1
 23-DEC-2003 23:38:28
 Dark
 45.500
 91
 Kap Vel
2.4900
 26000.
 91
 9489
 No
GOM_TRA_1PNPDE20031223_233953_000000472022_00417_09489_0032.N1
 23-DEC-2003 23:39:53
 Dark
 47.000
 41
 Eps Car
1.8600
 4100.0
 94
 9489
 No
GOM_TRA_1PNPDE20031223_234252_000000512022_00417_09489_0033.N1
 23-DEC-2003 23:42:52
 Dark
 50.500
 34
 Gam2Vel
1.7930
 23000.
 101
 9489
 No
GOM_TRA_1PNPDE20031223_234428_000000482022_00417_09489_0034.N1
 23-DEC-2003 23:44:28
 Dark
 48.000
 2
 Alp Car
-0.73600
 7000.0
 96
 9489
 No
GOM_TRA_1PNPDE20031223_234727_000000512022_00417_09489_0035.N1
 23-DEC-2003 23:47:27
 Dark
 50.500
 117
 Pi Pup
2.7060
 3800.0
 101
 9489
 No
GOM_TRA_1PNPDE20031223_235029_000000512022_00417_09489_0036.N1
 23-DEC-2003 23:50:29
 Dark
 50.500
 23
 21Eps CMa
1.5020
 26000.
 101
 9489
 No
GOM_TRA_1PNPDE20031223_235210_000000492022_00417_09489_0000.N1
 23-DEC-2003 23:52:10
 Dark
 48.500
 179
 24Omi2CMa
3.0320
 24000.
 97
 9489
 No
GOM_TRA_1PNPDE20031223_235438_000000492022_00417_09489_0001.N1
 23-DEC-2003 23:54:38
 Dark
 49.000
 47
 2Bet CMa
1.9760
 28000.
 98
 9489
 No
GOM_TRA_1PNPDE20031223_235727_000000472022_00417_09489_0002.N1
 23-DEC-2003 23:57:27
 Dark
 47.000
 56
 53Kap Ori
2.0650
 30000.
 94
 9489
 No
GOM_TRA_1PNPDE20031223_235858_000000442022_00417_09489_0003.N1
 23-DEC-2003 23:58:58
 Dark
 44.000
 128
 67Bet Eri
2.7840
 9700.0
 88
 9489
 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

qds_image


 

5. Demodulation flag and quality information monitoring

5.1 Percentage of products during reporting period with:

At least one measurement with demodulation flag set:
17.0732 %
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

qds_image


 

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
Mean:
13.446
 20.610
St. deviation:
3.2690
 2.0434
Maximum:
19.538
 25.885
Minimum:
6.2439
 17.080
Number of data:
26.000
 15.000

 

6.2 Plot for DARK limb products

qds_image


 

6.3 Plot for BRIGHT limb products

qds_image


 

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:
1462.2
 1447.5
 1460.8
 1446.8
St. deviation:
5.5822
 6.2769
 8.0555
 9.1429
Maximum:
1702.0
 1757.0
 1522.0
 1512.0
Minimum:
1428.0
 1419.0
 1427.0
 1412.0
Number of data:
31100.
 31100.
 15750.
 15750.

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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24-Apr-2008