Observation information
- date-obs: 2025-04-24
- time-obs: 13:31:10.421100000
- date-end: 2025-04-24
- time-end: 18:00:28.377000000
- obs_id: A13_090T01_9000006464
- exposure: 11144.8284349
- 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_51779cztM0_level2.fits
| modeM0/AS1A13_090T01_9000006464_51779cztM0_level2_quad_clean.evt
|
Size (bytes) | 1,599,120,000 | 209,304,000 |
Size | 1.5 GB
| 199.6 MB
|
Events in quadrant A | 11,644,214 | 1,437,124 |
Events in quadrant B | 10,753,875 | 1,532,661 |
Events in quadrant C | 13,233,367 | 1,363,241 |
Events in quadrant D | 22,337,753 | 907,477 |
Level1 data integrity
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 3 | 0 |
B | 0 | 3 | 0 |
C | 0 | 3 | 0 |
D | 0 | 3 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 320 | 0 |
B | 0 | 320 | 0 |
C | 0 | 320 | 0 |
D | 0 | 320 | 0 |
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 45550 | 1 |
B | 0 | 42904 | 1 |
C | 0 | 50178 | 1 |
D | 0 | 77337 | 1 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 15883 | 605 | 3.809104% |
B | 15884 | 846 | 5.326114% |
C | 15884 | 1009 | 6.352304% |
D | 15884 | 5361 | 33.750944% |
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 | 16158 | 15884 | 331 | 331 | 2.05% | 2.08% |  |
B | 16159 | 15885 | 431 | 431 | 2.67% | 2.71% |  |
C | 16159 | 15885 | 637 | 637 | 3.94% | 4.01% |  |
D | 16159 | 15885 | 4632 | 4632 | 28.67% | 29.16% |  |
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 | 1363735 | 3232.49 | 1711 | 1668 | 421.4 |
A | 3 | 14 | 587063 | 1389.27 | 1711 | 1668 | 421.4 |
A | 4 | 175 | 548207 | 1297.06 | 1711 | 1668 | 421.4 |
B | 4 | 206 | 1321150 | 3642.94 | 1692 | 1633 | 362.2 |
B | 10 | 44 | 956173 | 2635.3 | 1692 | 1633 | 362.2 |
B | 4 | 174 | 477615 | 1314.1 | 1692 | 1633 | 362.2 |
C | 3 | 242 | 2316316 | 5172.96 | 1653 | 1643 | 447.5 |
C | 15 | 218 | 808725 | 1803.71 | 1653 | 1643 | 447.5 |
C | 9 | 38 | 692670 | 1544.35 | 1653 | 1643 | 447.5 |
D | 11 | 129 | 12881943 | 33353.48 | 1384 | 1336 | 386.2 |
D | 7 | 60 | 1833677 | 4744.72 | 1384 | 1336 | 386.2 |
D | 7 | 159 | 387927 | 1001.05 | 1384 | 1336 | 386.2 |
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 |  |