Observation information
- date-obs: 2025-04-22
- time-obs: 14:40:29.898900000
- date-end: 2025-04-22
- time-end: 19:21:01.855400000
- obs_id: A13_090T01_9000006464
- exposure: 12699.5456749
- 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_51750cztM0_level2.fits
| modeM0/AS1A13_090T01_9000006464_51750cztM0_level2_quad_clean.evt
|
Size (bytes) | 1,554,287,040 | 219,392,640 |
Size | 1.4 GB
| 209.2 MB
|
Events in quadrant A | 10,170,576 | 1,506,017 |
Events in quadrant B | 14,026,063 | 1,512,651 |
Events in quadrant C | 9,819,027 | 1,460,296 |
Events in quadrant D | 22,237,527 | 1,018,264 |
Level1 data integrity
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 | 334 | 0 |
B | 0 | 334 | 0 |
C | 0 | 334 | 0 |
D | 0 | 334 | 0 |
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 41337 | 1 |
B | 0 | 53086 | 1 |
C | 0 | 40856 | 1 |
D | 0 | 77504 | 1 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 16597 | 530 | 3.193348% |
B | 16597 | 1909 | 11.502079% |
C | 16597 | 300 | 1.807556% |
D | 16598 | 4626 | 27.870828% |
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 | 16832 | 16598 | 331 | 331 | 1.97% | 1.99% |  |
B | 16832 | 16598 | 1194 | 1194 | 7.09% | 7.19% |  |
C | 16832 | 16598 | 214 | 214 | 1.27% | 1.29% |  |
D | 16833 | 16599 | 4067 | 4067 | 24.16% | 24.50% |  |
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 | 2 | 143 | 463830 | 1062.34 | 1780 | 1740 | 435.0 |
A | 4 | 3 | 281952 | 644.2 | 1780 | 1740 | 435.0 |
A | 3 | 14 | 269857 | 616.4 | 1780 | 1740 | 435.0 |
B | 4 | 206 | 4602462 | 12529.41 | 1711 | 1648 | 367.2 |
B | 8 | 128 | 409684 | 1111.21 | 1711 | 1648 | 367.2 |
B | 1 | 207 | 397078 | 1076.88 | 1711 | 1648 | 367.2 |
C | 3 | 233 | 478644 | 998.14 | 1748 | 1738 | 477.8 |
C | 13 | 3 | 408326 | 850.97 | 1748 | 1738 | 477.8 |
C | 15 | 218 | 391734 | 816.25 | 1748 | 1738 | 477.8 |
D | 11 | 129 | 10785552 | 25166.02 | 1536 | 1483 | 428.5 |
D | 8 | 176 | 1923357 | 4484.94 | 1536 | 1483 | 428.5 |
D | 7 | 60 | 1257986 | 2932.21 | 1536 | 1483 | 428.5 |
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 |  |