Observation information
- date-obs: 2025-04-01
- time-obs: 16:56:50.244700000
- date-end: 2025-04-01
- time-end: 19:23:24.209600000
- obs_id: A13_090T01_9000006458
- exposure: 2602.0613609
- 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_51438cztM0_level2.fits
| modeM0/AS1A13_090T01_9000006458_51438cztM0_level2_quad_clean.evt
|
Size (bytes) | 775,267,200 | 83,088,000 |
Size | 739.4 MB
| 79.2 MB
|
Events in quadrant A | 6,451,655 | 575,072 |
Events in quadrant B | 4,186,932 | 670,912 |
Events in quadrant C | 12,774,460 | 256,962 |
Events in quadrant D | 4,778,420 | 557,213 |
Level1 data integrity
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 23593 | 4 |
B | 0 | 16872 | 2 |
C | 0 | 42394 | 2 |
D | 0 | 18849 | 2 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 23 | 0 |
B | 0 | 23 | 0 |
C | 0 | 23 | 0 |
D | 0 | 23 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 134 | 0 |
B | 0 | 134 | 0 |
C | 0 | 134 | 0 |
D | 0 | 134 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 6533 | 959 | 14.679320% |
B | 6534 | 443 | 6.779920% |
C | 6534 | 4099 | 62.733395% |
D | 6534 | 416 | 6.366697% |
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 | 8793 | 6533 | 629 | 629 | 7.15% | 9.63% |  |
B | 8794 | 6534 | 187 | 187 | 2.13% | 2.86% |  |
C | 8794 | 6534 | 3947 | 3947 | 44.88% | 60.41% |  |
D | 8794 | 6535 | 306 | 306 | 3.48% | 4.68% |  |
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 | 1336494 | 7726.88 | 705 | 688 | 172.9 |
A | 12 | 3 | 1088755 | 6293.85 | 705 | 688 | 172.9 |
A | 15 | 174 | 507873 | 2933.78 | 705 | 688 | 172.9 |
B | 0 | 172 | 302265 | 1942.67 | 723 | 697 | 155.2 |
B | 5 | 172 | 284701 | 1829.53 | 723 | 697 | 155.2 |
B | 4 | 206 | 227080 | 1458.34 | 723 | 697 | 155.2 |
C | 4 | 12 | 7927196 | 64018.97 | 442 | 438 | 123.8 |
C | 0 | 176 | 1516068 | 12240.7 | 442 | 438 | 123.8 |
C | 15 | 179 | 634889 | 5124.02 | 442 | 438 | 123.8 |
D | 6 | 42 | 857277 | 4411.5 | 688 | 663 | 194.2 |
D | 8 | 176 | 553099 | 2845.01 | 688 | 663 | 194.2 |
D | 13 | 170 | 112609 | 576.51 | 688 | 663 | 194.2 |
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 |  |