Observation information
- date-obs: 2025-04-24
- time-obs: 22:04:33.335200000
- date-end: 2025-04-25
- time-end: 00:34:03.309300000
- obs_id: A13_090T01_9000006464
- exposure: 5598.27138001
- 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_51783cztM0_level2.fits
| modeM0/AS1A13_090T01_9000006464_51783cztM0_level2_quad_clean.evt
|
Size (bytes) | 644,391,360 | 97,286,400 |
Size | 614.5 MB
| 92.8 MB
|
Events in quadrant A | 5,311,292 | 626,176 |
Events in quadrant B | 4,710,996 | 718,801 |
Events in quadrant C | 4,724,531 | 625,601 |
Events in quadrant D | 8,564,780 | 488,058 |
Level1 data integrity
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 20 | 0 |
B | 0 | 20 | 0 |
C | 0 | 20 | 0 |
D | 0 | 20 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 144 | 0 |
B | 0 | 144 | 0 |
C | 0 | 144 | 0 |
D | 0 | 144 | 0 |
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 20526 | 2 |
B | 0 | 18785 | 2 |
C | 0 | 18659 | 2 |
D | 0 | 30325 | 3 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 6990 | 518 | 7.410587% |
B | 6990 | 210 | 3.004292% |
C | 6990 | 307 | 4.391989% |
D | 6990 | 1647 | 23.562232% |
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 | 8970 | 6992 | 481 | 481 | 5.36% | 6.88% |  |
B | 8970 | 6992 | 106 | 106 | 1.18% | 1.52% |  |
C | 8970 | 6992 | 271 | 271 | 3.02% | 3.88% |  |
D | 8970 | 6990 | 1497 | 1497 | 16.69% | 21.42% |  |
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 | 15 | 174 | 1420433 | 7945.81 | 729 | 712 | 178.7 |
A | 3 | 14 | 226337 | 1262.76 | 729 | 712 | 178.7 |
A | 11 | 3 | 108637 | 604.03 | 729 | 712 | 178.7 |
B | 4 | 206 | 816170 | 5082.15 | 745 | 716 | 160.5 |
B | 4 | 174 | 258034 | 1603.68 | 745 | 716 | 160.5 |
B | 0 | 171 | 226865 | 1409.43 | 745 | 716 | 160.5 |
C | 15 | 218 | 383563 | 1919.93 | 722 | 718 | 199.4 |
C | 14 | 245 | 357410 | 1788.78 | 722 | 718 | 199.4 |
C | 9 | 38 | 341546 | 1709.22 | 722 | 718 | 199.4 |
D | 11 | 129 | 5161821 | 28594.84 | 642 | 617 | 180.5 |
D | 3 | 12 | 344369 | 1904.5 | 642 | 617 | 180.5 |
D | 2 | 120 | 262848 | 1452.85 | 642 | 617 | 180.5 |
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 |  |