Observation information
- date-obs: 2025-04-09
- time-obs: 01:20:01.265700000
- date-end: 2025-04-09
- time-end: 06:25:26.207400000
- obs_id: A13_090T01_9000006458
- exposure: 11380.7200887
- 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_9000006458_51550cztM0_level2.fits
| modeM0/AS1A13_090T01_9000006458_51550cztM0_level2_quad_clean.evt
|
Size (bytes) | 1,978,899,840 | 201,502,080 |
Size | 1.8 GB
| 192.2 MB
|
Events in quadrant A | 24,320,519 | 1,052,271 |
Events in quadrant B | 20,801,234 | 1,260,262 |
Events in quadrant C | 9,981,549 | 1,462,354 |
Events in quadrant D | 16,870,530 | 1,179,747 |
Level1 data integrity
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 83818 | 3 |
B | 0 | 73191 | 3 |
C | 0 | 41389 | 5 |
D | 0 | 61762 | 3 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 16 | 0 |
B | 0 | 16 | 0 |
C | 0 | 16 | 0 |
D | 0 | 16 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 340 | 0 |
B | 0 | 340 | 0 |
C | 0 | 340 | 0 |
D | 0 | 340 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 16600 | 5760 | 34.698795% |
B | 16600 | 4339 | 26.138554% |
C | 16599 | 420 | 2.530273% |
D | 16600 | 2619 | 15.777108% |
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 | 18324 | 16600 | 5005 | 5005 | 27.31% | 30.15% |  |
B | 18325 | 16602 | 3627 | 3627 | 19.79% | 21.85% |  |
C | 18324 | 16601 | 273 | 273 | 1.49% | 1.64% |  |
D | 18325 | 16602 | 2481 | 2481 | 13.54% | 14.94% |  |
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 | 7 | 64 | 7594606 | 20518.76 | 1496 | 1459 | 370.1 |
A | 15 | 32 | 3502900 | 9461.85 | 1496 | 1459 | 370.1 |
A | 12 | 3 | 3045489 | 8225.8 | 1496 | 1459 | 370.1 |
B | 10 | 44 | 12319559 | 35873.54 | 1609 | 1548 | 343.4 |
B | 5 | 172 | 455880 | 1323.14 | 1609 | 1548 | 343.4 |
B | 0 | 171 | 257240 | 744.65 | 1609 | 1548 | 343.4 |
C | 9 | 38 | 1253171 | 2584.14 | 1751 | 1732 | 484.3 |
C | 13 | 3 | 818788 | 1687.17 | 1751 | 1732 | 484.3 |
C | 3 | 233 | 380144 | 781.4 | 1751 | 1732 | 484.3 |
D | 8 | 176 | 7639452 | 16529.44 | 1644 | 1585 | 462.1 |
D | 12 | 6 | 1291070 | 2790.63 | 1644 | 1585 | 462.1 |
D | 6 | 42 | 373019 | 803.84 | 1644 | 1585 | 462.1 |
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 |  |