Observation information
- date-obs: 2025-04-25
- time-obs: 12:08:40.190500000
- date-end: 2025-04-25
- time-end: 14:25:57.169100000
- obs_id: A13_090T01_9000006464
- exposure: 5767.40389961
- 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_51791cztM0_level2.fits
| modeM0/AS1A13_090T01_9000006464_51791cztM0_level2_quad_clean.evt
|
Size (bytes) | 948,237,120 | 105,554,880 |
Size | 904.3 MB
| 100.7 MB
|
Events in quadrant A | 6,748,331 | 728,853 |
Events in quadrant B | 9,367,705 | 715,897 |
Events in quadrant C | 6,870,095 | 689,763 |
Events in quadrant D | 11,478,265 | 488,376 |
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 | 25621 | 0 |
B | 0 | 33606 | 0 |
C | 0 | 26048 | 1 |
D | 0 | 39842 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 8237 | 527 | 6.397960% |
B | 8238 | 1476 | 17.916970% |
C | 8237 | 737 | 8.947432% |
D | 8237 | 2827 | 34.320748% |
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 | 8237 | 8237 | 344 | 344 | 4.18% | 4.18% |  |
B | 8238 | 8238 | 1073 | 1073 | 13.03% | 13.03% |  |
C | 8237 | 8237 | 597 | 597 | 7.25% | 7.25% |  |
D | 8237 | 8237 | 2472 | 2472 | 30.01% | 30.01% |  |
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 | 15 | 174 | 996994 | 4522.28 | 896 | 872 | 220.3 |
A | 12 | 3 | 865318 | 3924.48 | 896 | 872 | 220.3 |
A | 11 | 3 | 236453 | 1069.51 | 896 | 872 | 220.3 |
B | 10 | 128 | 3715037 | 20107.75 | 854 | 823 | 184.7 |
B | 10 | 44 | 551339 | 2980.34 | 854 | 823 | 184.7 |
B | 5 | 185 | 277857 | 1499.79 | 854 | 823 | 184.7 |
C | 3 | 233 | 646965 | 2831.15 | 838 | 830 | 228.2 |
C | 15 | 192 | 389109 | 1701.31 | 838 | 830 | 228.2 |
C | 0 | 209 | 382167 | 1670.89 | 838 | 830 | 228.2 |
D | 11 | 129 | 6797863 | 32861.17 | 746 | 719 | 206.8 |
D | 3 | 12 | 472907 | 2282.82 | 746 | 719 | 206.8 |
D | 7 | 60 | 324863 | 1567.09 | 746 | 719 | 206.8 |
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 |  |