Observation information
- date-obs: 2025-04-06
- time-obs: 13:36:45.929300000
- date-end: 2025-04-06
- time-end: 15:43:06.905700000
- obs_id: A13_090T01_9000006458
- exposure: 1792.18220681
- 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_51510cztM0_level2.fits
| modeM0/AS1A13_090T01_9000006458_51510cztM0_level2_quad_clean.evt
|
Size (bytes) | 789,431,040 | 81,938,880 |
Size | 752.9 MB
| 78.1 MB
|
Events in quadrant A | 5,914,340 | 573,855 |
Events in quadrant B | 4,123,924 | 679,871 |
Events in quadrant C | 3,789,905 | 612,630 |
Events in quadrant D | 14,889,684 | 160,668 |
Level1 data integrity
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 21785 | 1 |
B | 0 | 16594 | 2 |
C | 0 | 15617 | 1 |
D | 0 | 48753 | 1 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 11 | 0 |
B | 0 | 11 | 0 |
C | 0 | 11 | 0 |
D | 0 | 11 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 132 | 0 |
B | 0 | 132 | 0 |
C | 0 | 132 | 0 |
D | 0 | 132 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 6506 | 820 | 12.603750% |
B | 6506 | 294 | 4.518906% |
C | 6506 | 186 | 2.858899% |
D | 6506 | 5000 | 76.852136% |
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 | 7581 | 6507 | 589 | 589 | 7.77% | 9.05% |  |
B | 7581 | 6507 | 92 | 92 | 1.21% | 1.41% |  |
C | 7581 | 6507 | 114 | 114 | 1.50% | 1.75% |  |
D | 7581 | 6507 | 4930 | 4930 | 65.03% | 75.76% |  |
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 | 751934 | 4477.67 | 689 | 671 | 167.8 |
A | 4 | 175 | 543443 | 3235.02 | 689 | 671 | 167.8 |
A | 12 | 3 | 454090 | 2702.46 | 689 | 671 | 167.8 |
B | 7 | 252 | 279455 | 1823.3 | 721 | 695 | 152.9 |
B | 0 | 171 | 202167 | 1317.78 | 721 | 695 | 152.9 |
B | 15 | 52 | 184727 | 1203.71 | 721 | 695 | 152.9 |
C | 13 | 3 | 277912 | 1406.22 | 713 | 706 | 197.1 |
C | 15 | 1 | 206953 | 1046.25 | 713 | 706 | 197.1 |
C | 12 | 247 | 146284 | 738.49 | 713 | 706 | 197.1 |
D | 8 | 176 | 12133771 | 102180.31 | 424 | 409 | 118.7 |
D | 8 | 192 | 362790 | 3051.77 | 424 | 409 | 118.7 |
D | 13 | 84 | 279758 | 2352.52 | 424 | 409 | 118.7 |
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 |  |