Observation information
- date-obs: 2025-04-25
- time-obs: 01:38:47.297000000
- date-end: 2025-04-25
- time-end: 03:57:59.273500000
- obs_id: A13_090T01_9000006464
- exposure: 5583.38570207
- 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_51785cztM0_level2.fits
| modeM0/AS1A13_090T01_9000006464_51785cztM0_level2_quad_clean.evt
|
Size (bytes) | 616,968,000 | 92,462,400 |
Size | 588.4 MB
| 88.2 MB
|
Events in quadrant A | 5,428,447 | 586,725 |
Events in quadrant B | 5,087,817 | 665,422 |
Events in quadrant C | 5,093,584 | 589,734 |
Events in quadrant D | 6,726,466 | 505,838 |
Level1 data integrity
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 18 | 0 |
B | 0 | 19 | 0 |
C | 0 | 19 | 0 |
D | 0 | 19 | 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 |
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 20502 | 2 |
B | 0 | 19546 | 2 |
C | 0 | 19498 | 2 |
D | 0 | 24514 | 2 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 6475 | 686 | 10.594595% |
B | 6475 | 517 | 7.984556% |
C | 6475 | 532 | 8.216216% |
D | 6475 | 1054 | 16.277992% |
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 | 7605 | 6476 | 567 | 567 | 7.46% | 8.76% |  |
B | 7605 | 6476 | 296 | 296 | 3.89% | 4.57% |  |
C | 7605 | 6476 | 403 | 403 | 5.30% | 6.22% |  |
D | 7605 | 6476 | 925 | 925 | 12.16% | 14.28% |  |
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 | 13 | 248 | 1251908 | 7294.66 | 694 | 677 | 171.5 |
A | 11 | 14 | 435884 | 2537.25 | 694 | 677 | 171.5 |
A | 0 | 228 | 178072 | 1034.21 | 694 | 677 | 171.5 |
B | 10 | 44 | 1094895 | 7268.44 | 703 | 681 | 150.5 |
B | 4 | 206 | 307833 | 2040.29 | 703 | 681 | 150.5 |
B | 0 | 171 | 169129 | 1118.94 | 703 | 681 | 150.5 |
C | 15 | 218 | 572575 | 3037.74 | 687 | 681 | 188.3 |
C | 0 | 209 | 274345 | 1453.63 | 687 | 681 | 188.3 |
C | 0 | 192 | 217400 | 1151.15 | 687 | 681 | 188.3 |
D | 11 | 129 | 3298603 | 18082.28 | 652 | 627 | 182.4 |
D | 10 | 181 | 311419 | 1704.02 | 652 | 627 | 182.4 |
D | 3 | 12 | 246674 | 1349.03 | 652 | 627 | 182.4 |
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 |  |