Observation information
- date-obs: 2025-04-21
- time-obs: 14:22:22.139500000
- date-end: 2025-04-21
- time-end: 16:42:01.117300000
- obs_id: A13_090T01_9000006464
- exposure: 4093.91852325
- 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_51733cztM0_level2.fits
| modeM0/AS1A13_090T01_9000006464_51733cztM0_level2_quad_clean.evt
|
Size (bytes) | 928,111,680 | 106,937,280 |
Size | 885.1 MB
| 102.0 MB
|
Events in quadrant A | 5,900,270 | 773,552 |
Events in quadrant B | 6,856,850 | 799,643 |
Events in quadrant C | 5,577,343 | 738,634 |
Events in quadrant D | 15,372,938 | 344,004 |
Level1 data integrity
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 166 | 0 |
B | 0 | 166 | 0 |
C | 0 | 166 | 0 |
D | 0 | 166 | 0 |
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 23407 | 0 |
B | 0 | 26123 | 2 |
C | 0 | 22414 | 0 |
D | 0 | 51436 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 8379 | 184 | 2.195966% |
B | 8379 | 727 | 8.676453% |
C | 8379 | 279 | 3.329753% |
D | 8379 | 4734 | 56.498389% |
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 | 8379 | 8379 | 126 | 126 | 1.50% | 1.50% |  |
B | 8379 | 8379 | 535 | 535 | 6.39% | 6.39% |  |
C | 8379 | 8379 | 242 | 242 | 2.89% | 2.89% |  |
D | 8378 | 8378 | 4460 | 4460 | 53.23% | 53.23% |  |
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 | 1006913 | 4443.26 | 920 | 896 | 226.4 |
A | 11 | 3 | 245413 | 1079.95 | 920 | 896 | 226.4 |
A | 3 | 114 | 226957 | 998.44 | 920 | 896 | 226.4 |
B | 4 | 206 | 1702410 | 8905.44 | 888 | 857 | 191.1 |
B | 8 | 128 | 265730 | 1386.27 | 888 | 857 | 191.1 |
B | 1 | 207 | 220145 | 1147.69 | 888 | 857 | 191.1 |
C | 13 | 3 | 482302 | 1973.11 | 888 | 881 | 244.0 |
C | 15 | 148 | 432753 | 1770.04 | 888 | 881 | 244.0 |
C | 15 | 178 | 220325 | 899.4 | 888 | 881 | 244.0 |
D | 11 | 129 | 10913258 | 63545.69 | 611 | 589 | 171.7 |
D | 7 | 60 | 570079 | 3316.2 | 611 | 589 | 171.7 |
D | 15 | 123 | 359146 | 2087.92 | 611 | 589 | 171.7 |
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 |  |