Observation information
- date-obs: 2025-03-31
- time-obs: 20:20:33.477800000
- date-end: 2025-03-31
- time-end: 22:35:05.453600000
- obs_id: A13_090T01_9000006458
- exposure: 5320.39088649
- 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_51425cztM0_level2.fits
| modeM0/AS1A13_090T01_9000006458_51425cztM0_level2_quad_clean.evt
|
Size (bytes) | 717,384,960 | 93,919,680 |
Size | 684.2 MB
| 89.6 MB
|
Events in quadrant A | 7,467,544 | 593,558 |
Events in quadrant B | 5,128,659 | 682,373 |
Events in quadrant C | 9,055,455 | 493,042 |
Events in quadrant D | 4,363,556 | 588,600 |
Level1 data integrity
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 27025 | 2 |
B | 0 | 20026 | 3 |
C | 0 | 31771 | 2 |
D | 0 | 18029 | 2 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 10 | 0 |
B | 0 | 11 | 0 |
C | 0 | 11 | 0 |
D | 0 | 11 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 142 | 0 |
B | 0 | 142 | 0 |
C | 0 | 142 | 0 |
D | 0 | 142 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 6978 | 988 | 14.158785% |
B | 6977 | 566 | 8.112369% |
C | 6977 | 1838 | 26.343701% |
D | 6977 | 235 | 3.368210% |
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 | 7723 | 6979 | 719 | 719 | 9.31% | 10.30% |  |
B | 7722 | 6978 | 328 | 328 | 4.25% | 4.70% |  |
C | 7721 | 6976 | 1547 | 1547 | 20.04% | 22.18% |  |
D | 7722 | 6978 | 170 | 170 | 2.20% | 2.44% |  |
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 | 7 | 64 | 1825174 | 10410.6 | 713 | 694 | 175.3 |
A | 12 | 3 | 1675594 | 9557.09 | 713 | 694 | 175.3 |
A | 15 | 174 | 216114 | 1229.2 | 713 | 694 | 175.3 |
B | 5 | 172 | 1001462 | 6339.28 | 738 | 713 | 157.9 |
B | 5 | 185 | 562104 | 3556.15 | 738 | 713 | 157.9 |
B | 8 | 128 | 79739 | 500.59 | 738 | 713 | 157.9 |
C | 4 | 12 | 3690970 | 20736.84 | 649 | 644 | 178.0 |
C | 15 | 179 | 769284 | 4319.18 | 649 | 644 | 178.0 |
C | 10 | 171 | 681169 | 3824.04 | 649 | 644 | 178.0 |
D | 8 | 176 | 418480 | 2058.22 | 722 | 696 | 203.0 |
D | 11 | 176 | 403054 | 1982.22 | 722 | 696 | 203.0 |
D | 0 | 129 | 158923 | 779.51 | 722 | 696 | 203.0 |
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 |  |