Observation information
- date-obs: 2022-04-15
- time-obs: 17:36:05.916200000
- date-end: 2022-04-16
- time-end: 22:29:01.768800000
- obs_id: T05_022T01_9000005070
- exposure: 47380.9371439
- sourceid: 4U 1820-30
- observer: aruberi
- ra_pnt: 275.919
- dec_pnt: -30.36128
Basic statistics of files
Param |
Original file |
Final file |
Filename | modeM0/AS1T05_022T01_9000005070cztM0_level2_bc.evt
| modeM0/AS1T05_022T01_9000005070cztM0_level2_quad_clean.evt
|
Size (bytes) | 4,410,264,960 | 966,358,080 |
Size | 4.1 GB
| 921.6 MB
|
Events in quadrant A | 16,847,859 | 6,457,688 |
Events in quadrant B | 48,212,436 | 5,622,598 |
Events in quadrant C | 23,578,622 | 6,382,724 |
Events in quadrant D | 39,795,772 | 5,639,390 |
Level1 data integrity
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 155063 | 0 |
B | 0 | 389167 | 0 |
C | 0 | 176125 | 0 |
D | 0 | 257341 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 1540 | 0 |
B | 0 | 1540 | 0 |
C | 0 | 1540 | 0 |
D | 0 | 1540 | 0 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 287 | 0 |
B | 0 | 287 | 0 |
C | 0 | 287 | 0 |
D | 0 | 287 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 75242 | 108 | 0.143537% |
B | 75242 | 31169 | 41.425002% |
C | 75242 | 1559 | 2.071981% |
D | 75242 | 9886 | 13.138938% |
Noise dominated fraction
Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.
Quadrant |
# 1 sec bins |
Bins with >0 counts |
Bins with >2000 counts |
High rate bins dominated by noise |
Noise dominated (total time) |
Noise dominated (detector-on time) |
Marked lightcurve |
A | 103977 | 75258 | 2 | 2 | 0.00% | 0.00% |  |
B | 103977 | 75242 | 473 | 473 | 0.45% | 0.63% |  |
C | 103977 | 75242 | 152 | 152 | 0.15% | 0.20% |  |
D | 103977 | 75234 | 1390 | 1390 | 1.34% | 1.85% |  |
Top noisy pixels
Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1
Pixel properties |
Quadrant properties |
Quadrant |
DetID |
PixID |
Counts |
Sigma |
Mean |
Median |
Sigma |
A | 10 | 83 | 1352988 | 1588.71 | 3882 | 3825 | 849.2 |
A | 13 | 6 | 199033 | 229.87 | 3882 | 3825 | 849.2 |
A | 9 | 143 | 143960 | 165.02 | 3882 | 3825 | 849.2 |
B | 4 | 251 | 26769913 | 42214.07 | 3113 | 3051 | 634.1 |
B | 5 | 236 | 5242103 | 8262.52 | 3113 | 3051 | 634.1 |
B | 5 | 172 | 1666029 | 2622.69 | 3113 | 3051 | 634.1 |
C | 0 | 10 | 3189922 | 3661.1 | 3807 | 3780 | 870.3 |
C | 15 | 214 | 2881562 | 3306.77 | 3807 | 3780 | 870.3 |
C | 0 | 207 | 1962315 | 2250.49 | 3807 | 3780 | 870.3 |
D | 7 | 80 | 13216704 | 15488.76 | 3559 | 3445 | 853.1 |
D | 8 | 195 | 3388924 | 3968.5 | 3559 | 3445 | 853.1 |
D | 13 | 249 | 1725913 | 2019.1 | 3559 | 3445 | 853.1 |
Detector plane histogram (DPH)
Histogram calculated using DETX and DETY for each event in the final _common_clean file
Quadrant A |
 |
 |
Quadrant B |
Quadrant D |
 |
 |
Quadrant C |
Count rate plots and images
Plot type |
Count rate plots |
Images |
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data. |
 |
 |
Quadrant-wise count rates
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins |
 |
 |
Housekeeping plots
Parameter |
Plot |
CZT HV Monitor |  |
D_VDD |  |
Temperature 1 |  |
Veto HV Monitor |  |
Veto LLD |  |
Alpha Counter |  |
_CPM_Rate |  |
CZT Counter |  |
+2.5 Volts monitor |  |
+5 Volts monitor |  |
_ROLL_ROT |  |
_Roll_DEC |  |
_Roll_RA |  |
Veto Counter |  |