Observation information
- date-obs: 2025-04-04
- time-obs: 19:56:17.395300000
- date-end: 2025-04-04
- time-end: 22:02:10.346200000
- obs_id: A13_090T01_9000006458
- exposure: 4641.98826337
- 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_51484cztM0_level2.fits
| modeM0/AS1A13_090T01_9000006458_51484cztM0_level2_quad_clean.evt
|
Size (bytes) | 742,138,560 | 98,478,720 |
Size | 707.8 MB
| 93.9 MB
|
Events in quadrant A | 6,395,320 | 657,429 |
Events in quadrant B | 4,016,563 | 745,007 |
Events in quadrant C | 3,968,523 | 670,961 |
Events in quadrant D | 12,514,635 | 390,745 |
Level1 data integrity
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 24195 | 1 |
B | 0 | 17178 | 1 |
C | 0 | 17333 | 1 |
D | 0 | 42311 | 9 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 2 | 0 |
B | 0 | 2 | 0 |
C | 0 | 2 | 0 |
D | 0 | 2 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 150 | 0 |
B | 0 | 150 | 0 |
C | 0 | 150 | 0 |
D | 0 | 150 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 7442 | 612 | 8.223596% |
B | 7443 | 264 | 3.546957% |
C | 7443 | 161 | 2.163106% |
D | 7442 | 3057 | 41.077667% |
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 | 7553 | 7445 | 256 | 256 | 3.39% | 3.44% |  |
B | 7554 | 7446 | 73 | 73 | 0.97% | 0.98% |  |
C | 7554 | 7446 | 105 | 105 | 1.39% | 1.41% |  |
D | 7552 | 7443 | 2937 | 2937 | 38.89% | 39.46% |  |
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 | 1637455 | 8505.35 | 786 | 766 | 192.4 |
A | 12 | 250 | 405958 | 2105.65 | 786 | 766 | 192.4 |
A | 8 | 43 | 348883 | 1809.05 | 786 | 766 | 192.4 |
B | 8 | 234 | 146101 | 839.1 | 803 | 773 | 173.2 |
B | 7 | 252 | 133239 | 764.84 | 803 | 773 | 173.2 |
B | 0 | 171 | 94959 | 543.82 | 803 | 773 | 173.2 |
C | 13 | 3 | 533600 | 2486.38 | 788 | 778 | 214.3 |
C | 14 | 254 | 76862 | 355.04 | 788 | 778 | 214.3 |
C | 12 | 252 | 54310 | 249.8 | 788 | 778 | 214.3 |
D | 8 | 176 | 7283511 | 43207.49 | 603 | 580 | 168.6 |
D | 3 | 12 | 2087975 | 12383.9 | 603 | 580 | 168.6 |
D | 11 | 176 | 341029 | 2019.78 | 603 | 580 | 168.6 |
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 |  |