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GOMOS Daily Report 29-APR-2004

GOMOS Daily Report 29-APR-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
30APR2004 08:53:12
Data source version
GOMOS/4.02
Start time of products
29-APR-2004 (29APR2004 00:00:00)
Stop time of products
30-APR-2004 (30APR2004 00:00:00)
Store outputs flag
1
Nb of level 1b prods
48
Nb of prods with errors
1

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_1PNPDE20040429_000029_000000672026_00231_11307_0000.N1
29-APR-2004 00:00:29
Bright
67.000
80
7Del Sco
2.3160
30000.
134
11307
No
GOM_TRA_1PNPDE20040429_000609_000000512026_00231_11307_0001.N1
29-APR-2004 00:06:09
Bright
51.000
104
27Bet Lib
2.6140
13100.
102
11307
No
GOM_TRA_1PNPDE20040429_000851_000000382026_00231_11307_0002.N1
29-APR-2004 00:08:51
Bright
38.000
121
29Gam Vir
2.7400
7200.0
76
11307
No
GOM_TRA_1PNPDE20040429_001212_000000382026_00231_11307_0003.N1
29-APR-2004 00:12:12
Bright
38.000
138
47Eps Vir
2.8280
4700.0
76
11307
No
GOM_TRA_1PNPDE20040429_001355_000000382026_00231_11307_0004.N1
29-APR-2004 00:13:55
Bright
37.500
62
94Bet Leo
2.1360
9700.0
75
11307
No
GOM_TRA_1PNPDE20040429_001828_000000492026_00231_11307_0005.N1
29-APR-2004 00:18:28
Bright
48.500
83

2.3780
11000.
97
11307
No
GOM_TRA_1PNPDE20040429_002126_000000442026_00231_11307_0006.N1
29-APR-2004 00:21:26
Bright
43.500
180
27Gam Boo
3.0400
8000.0
87
11307
No
GOM_TRA_1PNPDE20040429_002335_000000412026_00231_11307_0007.N1
29-APR-2004 00:23:35
Bright
40.500
39
85Eta UMa
1.8540
24000.
81
11307
No
GOM_TRA_1PNPDE20040429_002453_000000392026_00231_11307_0008.N1
29-APR-2004 00:24:53
Bright
39.000
55
79Zet UMa
2.0600
10200.
78
11307
No
GOM_TRA_1PNPDE20040429_002709_000000392026_00231_11307_0009.N1
29-APR-2004 00:27:09
Bright
39.000
36
50Alp UMa
1.8000
6300.0
78
11307
No
GOM_TRA_1PNPDE20040429_003102_000000412026_00231_11307_0010.N1
29-APR-2004 00:31:02
Bright
40.500
60
7Bet UMi
2.0810
3950.0
81
11307
No
GOM_TRA_1PNPDE20040429_003441_000000372026_00231_11307_0011.N1
29-APR-2004 00:34:41
Bright
36.500
49
1Alp UMi
1.9900
6300.0
73
11307
No
GOM_TRA_1PNPDE20040429_004114_000000432026_00231_11307_0012.N1
29-APR-2004 00:41:14
Bright
42.500
89
5Alp Cep
2.4510
8000.0
85
11307
No
GOM_TRA_1PNPDE20040429_004418_000001512026_00231_11307_0013.N1
29-APR-2004 00:44:18
Bright
151.00
5
3Alp Lyr
0.033000
11000.
302
11307
No
GOM_TRA_1PNPDE20040429_004824_000000772026_00231_11307_0014.N1
29-APR-2004 00:48:24
Twilight
76.500
66
37Gam Cyg
2.2080
5900.0
153
11307
No
GOM_TRA_1PNPDE20040429_005151_000000702026_00231_11307_0015.N1
29-APR-2004 00:51:51
Twilight
70.000
92
53Eps Cyg
2.5000
4500.0
140
11307
No
GOM_TRA_1PNPDE20040429_005643_000000492026_00231_11307_0016.N1
29-APR-2004 00:56:43
Twilight
48.500
90
54Alp Peg
2.4870
11000.
97
11307
No
GOM_TRA_1PNPDE20040429_010053_000000672026_00231_11307_0017.N1
29-APR-2004 01:00:53
Dark
67.000
61
8Eps Peg
2.1000
3900.0
134
11307
No
GOM_TRA_1PNPDE20040429_010440_000000462026_00231_11307_0018.N1
29-APR-2004 01:04:40
Dark
46.000
52
16Bet Cet
2.0370
4500.0
92
11307
No
GOM_TRA_1PNPDE20040429_010653_000000642026_00231_11307_0019.N1
29-APR-2004 01:06:53
Dark
63.500
154
22Bet Aqr
2.8990
5700.0
127
11307
No
GOM_TRA_1PNPDE20040429_010927_000000482026_00231_11307_0020.N1
29-APR-2004 01:09:27
Dark
47.500
18
24Alp PsA
1.1660
9700.0
95
11307
No
GOM_TRA_1PNPDE20040429_011756_000000462026_00232_11308_0021.N1
29-APR-2004 01:17:56
Dark
45.500
148
Alp Tuc
2.8780
4100.0
91
11308
No
GOM_TRA_1PNPDE20040429_012040_000000452026_00232_11308_0022.N1
29-APR-2004 01:20:40
Dark
45.000
45
Alp Pav
1.9400
26000.
90
11308
No
GOM_TRA_1PNPDE20040429_012612_000000762026_00232_11308_0023.N1
29-APR-2004 01:26:12
Dark
76.000
103
38Zet Sgr
2.6000
9700.0
152
11308
No
GOM_TRA_1PNPDE20040429_012852_000000692026_00232_11308_0024.N1
29-APR-2004 01:28:52
Dark
68.500
38
20Eps Sgr
1.8360
11000.
137
11308
No
GOM_TRA_1PNPDE20040429_013141_000000532026_00232_11308_0025.N1
29-APR-2004 01:31:41
Twilight
53.000
4
Alp1Cen
-0.010000
5800.0
106
11308
No
GOM_TRA_1PNPDE20040429_013318_000000412026_00232_11308_0026.N1
29-APR-2004 01:33:18
Twilight
40.500
20
Bet Cru
1.2530
30000.
81
11308
No
GOM_TRA_1PNPDE20040429_013504_000000432026_00232_11308_0027.N1
29-APR-2004 01:35:04
Bright
42.500
78
Alp Lup
2.3040
28000.
85
11308
No
GOM_TRA_1PNPDE20040429_013637_000000432026_00232_11308_0028.N1
29-APR-2004 01:36:37
Bright
42.500
81
Eta Cen
2.3560
28000.
85
11308
No
GOM_TRA_1PNPDE20040429_013848_000000742026_00232_11308_0029.N1
29-APR-2004 01:38:48
Bright
74.000
16
21Alp Sco
1.0200
3000.0
148
11308
No
GOM_TRA_1PNPDE20040429_014108_000000642026_00232_11308_0000.N1
29-APR-2004 01:41:08
Bright
63.500
80
7Del Sco
2.3160
30000.
127
11308
Yes
GOM_TRA_1PNPDE20040429_014645_000000522026_00232_11308_0001.N1
29-APR-2004 01:46:45
Bright
51.500
104
27Bet Lib
2.6140
13100.
103
11308
No
GOM_TRA_1PNPDE20040429_014928_000000382026_00232_11308_0002.N1
29-APR-2004 01:49:28
Bright
38.000
121
29Gam Vir
2.7400
7200.0
76
11308
No
GOM_TRA_1PNPDE20040429_015248_000000392026_00232_11308_0003.N1
29-APR-2004 01:52:48
Bright
38.500
138
47Eps Vir
2.8280
4700.0
77
11308
No
GOM_TRA_1PNPDE20040429_015431_000000382026_00232_11308_0004.N1
29-APR-2004 01:54:31
Bright
38.000
62
94Bet Leo
2.1360
9700.0
76
11308
No
GOM_TRA_1PNPDE20040429_015903_000000472026_00232_11308_0005.N1
29-APR-2004 01:59:03
Bright
47.000
83

2.3780
11000.
94
11308
No
GOM_TRA_1PNPDE20040429_020202_000000422026_00232_11308_0006.N1
29-APR-2004 02:02:02
Bright
42.000
180
27Gam Boo
3.0400
8000.0
84
11308
No
GOM_TRA_1PNPDE20040429_020410_000000422026_00232_11308_0007.N1
29-APR-2004 02:04:10
Bright
41.500
39
85Eta UMa
1.8540
24000.
83
11308
No
GOM_TRA_1PNPDE20040429_020529_000000372026_00232_11308_0008.N1
29-APR-2004 02:05:29
Bright
36.500
55
79Zet UMa
2.0600
10200.
73
11308
No
GOM_TRA_1PNPDE20040429_020745_000000382026_00232_11308_0009.N1
29-APR-2004 02:07:45
Bright
38.000
36
50Alp UMa
1.8000
6300.0
76
11308
No
GOM_TRA_1PNPDE20040429_021138_000000412026_00232_11308_0010.N1
29-APR-2004 02:11:38
Bright
41.000
60
7Bet UMi
2.0810
3950.0
82
11308
No
GOM_TRA_1PNPDE20040429_021518_000000382026_00232_11308_0011.N1
29-APR-2004 02:15:18
Bright
38.000
49
1Alp UMi
1.9900
6300.0
76
11308
No
GOM_TRA_1PNPDE20040429_022149_000000432026_00232_11308_0012.N1
29-APR-2004 02:21:49
Bright
43.000
89
5Alp Cep
2.4510
8000.0
86
11308
No
GOM_TRA_1PNPDE20040429_022452_000001692026_00232_11308_0013.N1
29-APR-2004 02:24:52
Bright
168.50
5
3Alp Lyr
0.033000
11000.
337
11308
No
GOM_TRA_1PNPDE20040429_022900_000000812026_00232_11308_0014.N1
29-APR-2004 02:29:00
Twilight
80.500
66
37Gam Cyg
2.2080
5900.0
161
11308
No
GOM_TRA_1PNPDE20040429_023227_000000702026_00232_11308_0015.N1
29-APR-2004 02:32:27
Twilight
70.000
92
53Eps Cyg
2.5000
4500.0
140
11308
No
GOM_TRA_1PNPDE20040429_023721_000000482026_00232_11308_0016.N1
29-APR-2004 02:37:21
Twilight
48.000
90
54Alp Peg
2.4870
11000.
96
11308
No
GOM_TRA_1PNPDE20040429_024130_000000682026_00232_11308_0017.N1
29-APR-2004 02:41:30
Dark
67.500
61
8Eps Peg
2.1000
3900.0
135
11308
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

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:
8.51064 %
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)

qds_image


 

5.3 Plot quality information per product (world map)

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 TWILIGHT
Mean:
13.775
19.714
13.645
St. deviation:
3.7331
4.0516
4.3988
Maximum:
19.860
29.938
18.079
Minimum:
9.9988
9.7297
4.6592
Number of data:
9.0000
30.000
8.0000

 

6.2 Plot for DARK limb products

qds_image


 

6.3 Plot for BRIGHT limb products

qds_image


 

6.3 Plot for TWILIGHT 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
1449.1
1461.8
1447.4
St. deviation:
4.5446
4.9255
6.9271
7.5660
Maximum:
1490.0
1480.0
1515.0
1496.0
Minimum:
1450.0
1441.0
1451.0
1447.0
Number of data:
13100.
13100.
38350.
38350.

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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