Observation information
- date-obs: 2025-04-24
- time-obs: 03:21:27.525900000
- date-end: 2025-04-24
- time-end: 05:24:11.504000000
- obs_id: A13_090T01_9000006464
- exposure: 4846.46058607
- 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_51771cztM0_level2.fits
| modeM0/AS1A13_090T01_9000006464_51771cztM0_level2_quad_clean.evt
|
Size (bytes) | 591,710,400 | 89,164,800 |
Size | 564.3 MB
| 85.0 MB
|
Events in quadrant A | 4,145,847 | 608,279 |
Events in quadrant B | 5,175,697 | 632,500 |
Events in quadrant C | 4,652,130 | 584,414 |
Events in quadrant D | 7,448,105 | 441,237 |
Level1 data integrity
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 12 | 0 |
B | 0 | 12 | 0 |
C | 0 | 12 | 0 |
D | 0 | 12 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 126 | 0 |
B | 0 | 126 | 0 |
C | 0 | 126 | 0 |
D | 0 | 126 | 0 |
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 16340 | 1 |
B | 0 | 19661 | 1 |
C | 0 | 17827 | 1 |
D | 0 | 26342 | 1 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 6209 | 211 | 3.398293% |
B | 6209 | 549 | 8.842004% |
C | 6210 | 309 | 4.975845% |
D | 6210 | 1511 | 24.331723% |
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 | 7364 | 6210 | 139 | 139 | 1.89% | 2.24% |  |
B | 7364 | 6210 | 304 | 304 | 4.13% | 4.90% |  |
C | 7365 | 6211 | 268 | 268 | 3.64% | 4.31% |  |
D | 7365 | 6211 | 1302 | 1302 | 17.68% | 20.96% |  |
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 | 11 | 3 | 397279 | 2403.55 | 683 | 671 | 165.0 |
A | 2 | 143 | 263377 | 1592.07 | 683 | 671 | 165.0 |
A | 8 | 249 | 130351 | 785.9 | 683 | 671 | 165.0 |
B | 4 | 206 | 1770413 | 12543.32 | 665 | 642 | 141.1 |
B | 4 | 174 | 277645 | 1963.27 | 665 | 642 | 141.1 |
B | 1 | 239 | 89439 | 629.35 | 665 | 642 | 141.1 |
C | 1 | 243 | 524842 | 2865.22 | 670 | 663 | 182.9 |
C | 15 | 232 | 400798 | 2187.18 | 670 | 663 | 182.9 |
C | 15 | 218 | 264414 | 1441.69 | 670 | 663 | 182.9 |
D | 11 | 129 | 4020295 | 24034.48 | 601 | 580 | 167.2 |
D | 7 | 222 | 617908 | 3691.1 | 601 | 580 | 167.2 |
D | 3 | 12 | 138089 | 822.19 | 601 | 580 | 167.2 |
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 |  |