Observation information
- date-obs: 2025-04-26
- time-obs: 12:27:12.950400000
- date-end: 2025-04-26
- time-end: 19:54:14.878300000
- obs_id: A13_090T01_9000006464
- exposure: 21420.0251718
- 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_51809cztM0_level2.fits
| modeM0/AS1A13_090T01_9000006464_51809cztM0_level2_quad_clean.evt
|
Size (bytes) | 2,430,227,520 | 342,720,000 |
Size | 2.3 GB
| 326.8 MB
|
Events in quadrant A | 21,013,901 | 2,214,592 |
Events in quadrant B | 22,533,078 | 2,388,162 |
Events in quadrant C | 16,493,025 | 2,208,376 |
Events in quadrant D | 27,977,266 | 1,829,390 |
Level1 data integrity
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 15 | 0 |
B | 0 | 15 | 0 |
C | 0 | 15 | 0 |
D | 0 | 15 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 512 | 0 |
B | 0 | 512 | 0 |
C | 0 | 512 | 0 |
D | 0 | 512 | 0 |
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 79829 | 3 |
B | 0 | 84480 | 3 |
C | 0 | 66809 | 3 |
D | 0 | 100570 | 4 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 25217 | 2011 | 7.974779% |
B | 25218 | 2287 | 9.068919% |
C | 25218 | 993 | 3.937664% |
D | 25217 | 4460 | 17.686481% |
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 | 26822 | 25220 | 1535 | 1535 | 5.72% | 6.09% |  |
B | 26823 | 25221 | 1252 | 1252 | 4.67% | 4.96% |  |
C | 26823 | 25221 | 775 | 775 | 2.89% | 3.07% |  |
D | 26822 | 25220 | 4056 | 4056 | 15.12% | 16.08% |  |
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 | 3460540 | 5345.32 | 2651 | 2587 | 646.9 |
A | 12 | 3 | 1845666 | 2849.04 | 2651 | 2587 | 646.9 |
A | 15 | 174 | 1564662 | 2414.66 | 2651 | 2587 | 646.9 |
B | 4 | 206 | 2612109 | 4597.8 | 2648 | 2550 | 567.6 |
B | 10 | 44 | 2541811 | 4473.95 | 2648 | 2550 | 567.6 |
B | 10 | 128 | 2370098 | 4171.4 | 2648 | 2550 | 567.6 |
C | 13 | 3 | 1430642 | 1984.02 | 2631 | 2612 | 719.8 |
C | 10 | 22 | 709855 | 982.6 | 2631 | 2612 | 719.8 |
C | 15 | 192 | 494670 | 683.64 | 2631 | 2612 | 719.8 |
D | 11 | 129 | 10672957 | 15835.38 | 2441 | 2353 | 673.8 |
D | 0 | 18 | 1082023 | 1602.25 | 2441 | 2353 | 673.8 |
D | 3 | 12 | 1054218 | 1560.99 | 2441 | 2353 | 673.8 |
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 |  |