Observation information
- date-obs: 2025-04-26
- time-obs: 20:47:34.869200000
- date-end: 2025-04-26
- time-end: 23:21:48.842400000
- obs_id: A13_090T01_9000006464
- exposure: 5829.61981916
- 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_9000006464_51812cztM0_level2.fits
| modeM0/AS1A13_090T01_9000006464_51812cztM0_level2_quad_clean.evt
|
Size (bytes) | 652,573,440 | 102,130,560 |
Size | 622.3 MB
| 97.4 MB
|
Events in quadrant A | 5,550,523 | 669,300 |
Events in quadrant B | 4,030,471 | 749,810 |
Events in quadrant C | 4,190,844 | 663,561 |
Events in quadrant D | 9,819,530 | 502,636 |
Level1 data integrity
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 20 | 0 |
B | 0 | 20 | 0 |
C | 0 | 20 | 0 |
D | 0 | 20 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 148 | 0 |
B | 0 | 148 | 0 |
C | 0 | 148 | 0 |
D | 0 | 148 | 0 |
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 21477 | 3 |
B | 0 | 17107 | 2 |
C | 0 | 17687 | 2 |
D | 0 | 34240 | 2 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 7288 | 341 | 4.678924% |
B | 7288 | 187 | 2.565862% |
C | 7288 | 177 | 2.428650% |
D | 7289 | 1759 | 24.132254% |
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 | 9253 | 7290 | 287 | 287 | 3.10% | 3.94% |  |
B | 9253 | 7290 | 61 | 61 | 0.66% | 0.84% |  |
C | 9253 | 7290 | 151 | 151 | 1.63% | 2.07% |  |
D | 9254 | 7291 | 1638 | 1638 | 17.70% | 22.47% |  |
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 | 4 | 175 | 933585 | 4917.73 | 774 | 753 | 189.7 |
A | 15 | 174 | 792290 | 4172.84 | 774 | 753 | 189.7 |
A | 12 | 3 | 145619 | 763.71 | 774 | 753 | 189.7 |
B | 0 | 171 | 215118 | 1276.6 | 784 | 756 | 167.9 |
B | 0 | 213 | 141119 | 835.91 | 784 | 756 | 167.9 |
B | 4 | 81 | 92415 | 545.86 | 784 | 756 | 167.9 |
C | 12 | 254 | 426070 | 1992.46 | 772 | 768 | 213.5 |
C | 13 | 3 | 219652 | 1025.43 | 772 | 768 | 213.5 |
C | 14 | 254 | 81886 | 380.02 | 772 | 768 | 213.5 |
D | 11 | 129 | 4891521 | 25400.88 | 682 | 657 | 192.5 |
D | 0 | 18 | 1149623 | 5967.2 | 682 | 657 | 192.5 |
D | 3 | 12 | 612755 | 3178.95 | 682 | 657 | 192.5 |
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 |  |