Observation information
- date-obs: 2025-04-23
- time-obs: 01:16:02.791000000
- date-end: 2025-04-23
- time-end: 03:26:58.767000000
- obs_id: A13_090T01_9000006464
- exposure: 5666.39299774
- 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_51755cztM0_level2.fits
| modeM0/AS1A13_090T01_9000006464_51755cztM0_level2_quad_clean.evt
|
Size (bytes) | 591,773,760 | 95,843,520 |
Size | 564.4 MB
| 91.4 MB
|
Events in quadrant A | 4,028,202 | 650,334 |
Events in quadrant B | 5,663,291 | 654,392 |
Events in quadrant C | 4,224,942 | 624,625 |
Events in quadrant D | 7,470,358 | 506,513 |
Level1 data integrity
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 12 | 0 |
B | 0 | 12 | 0 |
C | 0 | 12 | 0 |
D | 0 | 12 | 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 |
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 16433 | 2 |
B | 0 | 21470 | 2 |
C | 0 | 16999 | 2 |
D | 0 | 26773 | 2 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 6691 | 108 | 1.614109% |
B | 6691 | 759 | 11.343596% |
C | 6692 | 261 | 3.900179% |
D | 6692 | 1195 | 17.857143% |
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 | 7856 | 6692 | 44 | 44 | 0.56% | 0.66% |  |
B | 7856 | 6691 | 479 | 479 | 6.10% | 7.16% |  |
C | 7857 | 6693 | 173 | 173 | 2.20% | 2.58% |  |
D | 7857 | 6693 | 1035 | 1035 | 13.17% | 15.46% |  |
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 | 444417 | 2460.48 | 728 | 711 | 180.3 |
A | 15 | 174 | 112774 | 621.42 | 728 | 711 | 180.3 |
A | 9 | 160 | 101939 | 561.34 | 728 | 711 | 180.3 |
B | 4 | 206 | 1750717 | 11763.22 | 698 | 674 | 148.8 |
B | 7 | 0 | 585430 | 3930.54 | 698 | 674 | 148.8 |
B | 10 | 41 | 139459 | 932.87 | 698 | 674 | 148.8 |
C | 15 | 230 | 426464 | 2162.29 | 715 | 710 | 196.9 |
C | 1 | 243 | 166625 | 842.64 | 715 | 710 | 196.9 |
C | 13 | 3 | 148916 | 752.7 | 715 | 710 | 196.9 |
D | 11 | 129 | 4108061 | 22300.18 | 659 | 636 | 184.2 |
D | 8 | 176 | 290993 | 1576.42 | 659 | 636 | 184.2 |
D | 10 | 181 | 208289 | 1127.4 | 659 | 636 | 184.2 |
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 |  |