Observation information
- date-obs: 2025-04-21
- time-obs: 07:45:59.204300000
- date-end: 2025-04-28
- time-end: 07:15:00.532200000
- obs_id: A13_090T01_9000006464
- exposure: 14477.8360376
- 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_9000006464cztM0_level2.fits
| modeM0/AS1A13_090T01_9000006464cztM0_level2_quad_clean.evt
|
Size (bytes) | 4,335,693,120 | 1,371,741,120 |
Size | 4.0 GB
| 1.3 GB
|
Events in quadrant A | 26,113,916 | 1,283,272 |
Events in quadrant B | 24,028,490 | 1,326,966 |
Events in quadrant C | 25,384,098 | 1,178,664 |
Events in quadrant D | 18,750,848 | 826,065 |
Level1 data integrity
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 617 | 0 |
B | 0 | 617 | 0 |
C | 0 | 617 | 0 |
D | 0 | 617 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 10919 | 0 |
B | 0 | 10919 | 0 |
C | 0 | 10925 | 0 |
D | 0 | 10918 | 0 |
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 1612149 | 0 |
B | 0 | 1765215 | 0 |
C | 0 | 1536593 | 0 |
D | 0 | 2542785 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 538723 | 33683 | 6.252378% |
B | 538641 | 67989 | 12.622322% |
C | 538724 | 34391 | 6.383788% |
D | 538504 | 167803 | 31.160957% |
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 | 602941 | 538381 | 0 | 0 | 0.00% | 0.00% |  |
B | 602942 | 537617 | 0 | 0 | 0.00% | 0.00% |  |
C | 602942 | 538054 | 0 | 0 | 0.00% | 0.00% |  |
D | 602942 | 526777 | 0 | 0 | 0.00% | 0.00% |  |
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 | 14 | 188 | 27410 | 9.37 | 6895 | 6362 | 2245.8 |
A | 9 | 255 | 25995 | 8.74 | 6895 | 6362 | 2245.8 |
A | 14 | 95 | 21813 | 6.88 | 6895 | 6362 | 2245.8 |
B | 3 | 25 | 19740 | 9.07 | 6401 | 6026 | 1512.8 |
B | 9 | 173 | 19324 | 8.79 | 6401 | 6026 | 1512.8 |
B | 3 | 17 | 19195 | 8.71 | 6401 | 6026 | 1512.8 |
C | 15 | 175 | 20891 | 6.39 | 6828 | 6214 | 2295.5 |
C | 15 | 127 | 20570 | 6.25 | 6828 | 6214 | 2295.5 |
C | 2 | 31 | 20270 | 6.12 | 6828 | 6214 | 2295.5 |
D | 6 | 218 | 23858 | 10.61 | 5386 | 4787 | 1797.3 |
D | 3 | 30 | 18215 | 7.47 | 5386 | 4787 | 1797.3 |
D | 15 | 11 | 17063 | 6.83 | 5386 | 4787 | 1797.3 |
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 |  |