Observation information
- date-obs: 2025-04-08
- time-obs: 19:24:18.328200000
- date-end: 2025-04-08
- time-end: 21:30:34.305500000
- obs_id: A13_090T01_9000006458
- exposure: 3796.42806393
- sourceid: 4U 1755-338
- observer: arbind2196
- ra_pnt: 269.6667
- dec_pnt: -33.8075
Basic statistics of files
Param |
Original file |
Final file |
Filename | modeM0/AS1A13_090T01_9000006458_51543cztM0_level2.fits
| modeM0/AS1A13_090T01_9000006458_51543cztM0_level2_quad_clean.evt
|
Size (bytes) | 976,279,680 | 88,701,120 |
Size | 931.1 MB
| 84.6 MB
|
Events in quadrant A | 7,004,206 | 629,119 |
Events in quadrant B | 10,856,002 | 536,919 |
Events in quadrant C | 3,927,683 | 674,482 |
Events in quadrant D | 13,764,836 | 317,636 |
Level1 data integrity
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 26134 | 0 |
B | 0 | 37456 | 0 |
C | 0 | 17148 | 1 |
D | 0 | 46140 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 152 | 0 |
B | 0 | 152 | 0 |
C | 0 | 152 | 0 |
D | 0 | 152 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 7577 | 1039 | 13.712551% |
B | 7577 | 2576 | 33.997624% |
C | 7576 | 146 | 1.927138% |
D | 7576 | 4032 | 53.220697% |
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 | 7577 | 7577 | 717 | 717 | 9.46% | 9.46% |  |
B | 7577 | 7577 | 2161 | 2161 | 28.52% | 28.52% |  |
C | 7576 | 7576 | 133 | 133 | 1.76% | 1.76% |  |
D | 7576 | 7576 | 3874 | 3874 | 51.14% | 51.14% |  |
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 | 12 | 250 | 2538530 | 13311.45 | 777 | 759 | 190.6 |
A | 12 | 80 | 354083 | 1853.3 | 777 | 759 | 190.6 |
A | 12 | 17 | 287507 | 1504.09 | 777 | 759 | 190.6 |
B | 10 | 44 | 7082737 | 47524.62 | 688 | 664 | 149.0 |
B | 15 | 52 | 477933 | 3202.74 | 688 | 664 | 149.0 |
B | 0 | 171 | 79766 | 530.82 | 688 | 664 | 149.0 |
C | 13 | 3 | 406817 | 1878.87 | 784 | 776 | 216.1 |
C | 0 | 129 | 114344 | 525.51 | 784 | 776 | 216.1 |
C | 10 | 19 | 68128 | 311.66 | 784 | 776 | 216.1 |
D | 8 | 176 | 11002096 | 77072.97 | 509 | 491 | 142.7 |
D | 12 | 6 | 209093 | 1461.38 | 509 | 491 | 142.7 |
D | 2 | 249 | 99966 | 696.88 | 509 | 491 | 142.7 |
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 |  |