Observation information
- date-obs: 2025-04-23
- time-obs: 14:57:42.652800000
- date-end: 2025-04-23
- time-end: 20:47:00.574700000
- obs_id: A13_090T01_9000006464
- exposure: 12034.9429619
- 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_51765cztM0_level2.fits
| modeM0/AS1A13_090T01_9000006464_51765cztM0_level2_quad_clean.evt
|
Size (bytes) | 2,152,661,760 | 244,788,480 |
Size | 2.0 GB
| 233.4 MB
|
Events in quadrant A | 13,236,249 | 1,765,874 |
Events in quadrant B | 16,393,133 | 1,834,021 |
Events in quadrant C | 16,732,873 | 1,512,574 |
Events in quadrant D | 31,792,742 | 931,756 |
Level1 data integrity
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 11 | 0 |
B | 0 | 11 | 0 |
C | 0 | 11 | 0 |
D | 0 | 11 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 400 | 0 |
B | 0 | 400 | 0 |
C | 0 | 400 | 0 |
D | 0 | 400 | 0 |
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 53158 | 4 |
B | 0 | 62374 | 4 |
C | 0 | 63549 | 4 |
D | 0 | 108189 | 4 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 19832 | 754 | 3.801936% |
B | 19832 | 2064 | 10.407422% |
C | 19832 | 2525 | 12.731948% |
D | 19833 | 8618 | 43.452831% |
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 | 20958 | 19842 | 298 | 298 | 1.42% | 1.50% |  |
B | 20958 | 19842 | 1200 | 1200 | 5.73% | 6.05% |  |
C | 20957 | 19841 | 1807 | 1807 | 8.62% | 9.11% |  |
D | 20959 | 19839 | 7001 | 7001 | 33.40% | 35.29% |  |
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 | 3 | 1780700 | 3352.21 | 2146 | 2093 | 530.6 |
A | 8 | 249 | 659849 | 1239.7 | 2146 | 2093 | 530.6 |
A | 11 | 3 | 398015 | 746.21 | 2146 | 2093 | 530.6 |
B | 4 | 206 | 5867426 | 13174.95 | 2077 | 2005 | 445.2 |
B | 8 | 128 | 550921 | 1232.98 | 2077 | 2005 | 445.2 |
B | 7 | 252 | 338151 | 755.05 | 2077 | 2005 | 445.2 |
C | 15 | 218 | 5270160 | 9728.36 | 1991 | 1974 | 541.5 |
C | 15 | 230 | 581953 | 1071.0 | 1991 | 1974 | 541.5 |
C | 0 | 209 | 430498 | 791.32 | 1991 | 1974 | 541.5 |
D | 11 | 129 | 21253938 | 47327.83 | 1589 | 1529 | 449.0 |
D | 8 | 176 | 1140708 | 2536.88 | 1589 | 1529 | 449.0 |
D | 7 | 60 | 710762 | 1579.42 | 1589 | 1529 | 449.0 |
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 |  |