Observation information
- date-obs: 2025-03-31
- time-obs: 16:58:53.513900000
- date-end: 2025-03-31
- time-end: 19:06:42.490400000
- obs_id: A13_090T01_9000006458
- exposure: 4930.11335397
- 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_51423cztM0_level2.fits
| modeM0/AS1A13_090T01_9000006458_51423cztM0_level2_quad_clean.evt
|
Size (bytes) | 589,668,480 | 93,441,600 |
Size | 562.4 MB
| 89.1 MB
|
Events in quadrant A | 5,162,300 | 633,520 |
Events in quadrant B | 4,014,290 | 687,033 |
Events in quadrant C | 8,395,270 | 482,997 |
Events in quadrant D | 3,757,000 | 576,534 |
Level1 data integrity
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 19653 | 2 |
B | 0 | 16214 | 3 |
C | 0 | 29303 | 2 |
D | 0 | 15742 | 2 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 11 | 0 |
B | 0 | 12 | 0 |
C | 0 | 12 | 0 |
D | 0 | 12 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 132 | 0 |
B | 0 | 132 | 0 |
C | 0 | 132 | 0 |
D | 0 | 132 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 6435 | 290 | 4.506605% |
B | 6434 | 304 | 4.724899% |
C | 6434 | 1694 | 26.328878% |
D | 6434 | 185 | 2.875350% |
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 | 7570 | 6436 | 125 | 125 | 1.65% | 1.94% |  |
B | 7569 | 6435 | 147 | 147 | 1.94% | 2.28% |  |
C | 7569 | 6435 | 1486 | 1486 | 19.63% | 23.09% |  |
D | 7569 | 6435 | 106 | 106 | 1.40% | 1.65% |  |
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 | 1230594 | 6953.47 | 723 | 705 | 176.9 |
A | 15 | 174 | 254978 | 1437.59 | 723 | 705 | 176.9 |
A | 4 | 175 | 184886 | 1041.31 | 723 | 705 | 176.9 |
B | 8 | 128 | 307930 | 2027.19 | 719 | 695 | 151.6 |
B | 5 | 185 | 183850 | 1208.49 | 719 | 695 | 151.6 |
B | 0 | 172 | 137894 | 905.26 | 719 | 695 | 151.6 |
C | 4 | 12 | 3644256 | 20921.19 | 633 | 629 | 174.2 |
C | 10 | 171 | 624331 | 3581.21 | 633 | 629 | 174.2 |
C | 15 | 179 | 568091 | 3258.29 | 633 | 629 | 174.2 |
D | 7 | 80 | 226004 | 1163.64 | 697 | 671 | 193.6 |
D | 11 | 176 | 170317 | 876.07 | 697 | 671 | 193.6 |
D | 6 | 42 | 112914 | 579.63 | 697 | 671 | 193.6 |
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 |  |