Observation information
- date-obs: 2025-04-24
- time-obs: 17:43:36.380400000
- date-end: 2025-04-24
- time-end: 21:03:38.346500000
- obs_id: A13_090T01_9000006464
- exposure: 7589.14585155
- 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_51780cztM0_level2.fits
| modeM0/AS1A13_090T01_9000006464_51780cztM0_level2_quad_clean.evt
|
Size (bytes) | 1,015,007,040 | 144,351,360 |
Size | 968.0 MB
| 137.7 MB
|
Events in quadrant A | 6,911,551 | 990,088 |
Events in quadrant B | 7,895,898 | 1,053,722 |
Events in quadrant C | 6,725,865 | 948,269 |
Events in quadrant D | 15,213,338 | 638,465 |
Level1 data integrity
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 13 | 0 |
B | 0 | 13 | 0 |
C | 0 | 13 | 0 |
D | 0 | 13 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 218 | 0 |
B | 0 | 218 | 0 |
C | 0 | 218 | 0 |
D | 0 | 218 | 0 |
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 27846 | 2 |
B | 0 | 30873 | 2 |
C | 0 | 27228 | 2 |
D | 0 | 52627 | 2 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 10682 | 184 | 1.722524% |
B | 10683 | 450 | 4.212300% |
C | 10683 | 238 | 2.227839% |
D | 10683 | 3567 | 33.389497% |
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 | 12002 | 10684 | 122 | 122 | 1.02% | 1.14% |  |
B | 12003 | 10685 | 256 | 256 | 2.13% | 2.40% |  |
C | 12003 | 10685 | 176 | 176 | 1.47% | 1.65% |  |
D | 12003 | 10685 | 3203 | 3203 | 26.68% | 29.98% |  |
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 | 3 | 14 | 612648 | 2180.28 | 1130 | 1103 | 280.5 |
A | 12 | 3 | 372746 | 1324.98 | 1130 | 1103 | 280.5 |
A | 2 | 143 | 195274 | 692.26 | 1130 | 1103 | 280.5 |
B | 4 | 206 | 990981 | 4092.36 | 1118 | 1075 | 241.9 |
B | 10 | 44 | 847000 | 3497.13 | 1118 | 1075 | 241.9 |
B | 4 | 174 | 421686 | 1738.84 | 1118 | 1075 | 241.9 |
C | 15 | 218 | 625248 | 2092.84 | 1100 | 1091 | 298.2 |
C | 3 | 242 | 506692 | 1695.31 | 1100 | 1091 | 298.2 |
C | 9 | 38 | 343524 | 1148.2 | 1100 | 1091 | 298.2 |
D | 11 | 129 | 10580684 | 40493.33 | 926 | 892 | 261.3 |
D | 3 | 12 | 558368 | 2133.7 | 926 | 892 | 261.3 |
D | 8 | 176 | 117034 | 444.52 | 926 | 892 | 261.3 |
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 |  |