Observation information
- date-obs: 2025-04-01
- time-obs: 22:12:34.187600000
- date-end: 2025-04-02
- time-end: 00:36:41.161400000
- obs_id: A13_090T01_9000006458
- exposure: 2411.57300627
- 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_51441cztM0_level2.fits
| modeM0/AS1A13_090T01_9000006458_51441cztM0_level2_quad_clean.evt
|
Size (bytes) | 1,004,304,960 | 98,040,960 |
Size | 957.8 MB
| 93.5 MB
|
Events in quadrant A | 9,768,427 | 677,758 |
Events in quadrant B | 4,911,361 | 821,807 |
Events in quadrant C | 17,094,228 | 222,779 |
Events in quadrant D | 4,774,466 | 682,160 |
Level1 data integrity
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 34725 | 1 |
B | 0 | 20134 | 1 |
C | 0 | 56376 | 1 |
D | 0 | 20109 | 1 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 5 | 0 |
B | 0 | 5 | 0 |
C | 0 | 5 | 0 |
D | 0 | 5 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 164 | 0 |
B | 0 | 164 | 0 |
C | 0 | 164 | 0 |
D | 0 | 164 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 8112 | 1177 | 14.509369% |
B | 8113 | 170 | 2.095402% |
C | 8113 | 5927 | 73.055590% |
D | 8113 | 175 | 2.157032% |
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 | 8647 | 8112 | 768 | 768 | 8.88% | 9.47% |  |
B | 8648 | 8114 | 78 | 78 | 0.90% | 0.96% |  |
C | 8647 | 8113 | 5639 | 5639 | 65.21% | 69.51% |  |
D | 8648 | 8114 | 201 | 201 | 2.32% | 2.48% |  |
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 | 3299432 | 15759.59 | 843 | 821 | 209.3 |
A | 12 | 250 | 1034218 | 4937.2 | 843 | 821 | 209.3 |
A | 7 | 64 | 846547 | 4040.58 | 843 | 821 | 209.3 |
B | 10 | 254 | 517755 | 2750.8 | 882 | 850 | 187.9 |
B | 15 | 52 | 216238 | 1146.22 | 882 | 850 | 187.9 |
B | 12 | 32 | 104917 | 553.81 | 882 | 850 | 187.9 |
C | 4 | 12 | 11224680 | 91125.11 | 452 | 450 | 123.2 |
C | 15 | 179 | 2654842 | 21549.97 | 452 | 450 | 123.2 |
C | 0 | 176 | 510954 | 4144.58 | 452 | 450 | 123.2 |
D | 3 | 12 | 594039 | 2504.5 | 852 | 819 | 236.9 |
D | 7 | 96 | 135777 | 569.77 | 852 | 819 | 236.9 |
D | 6 | 42 | 128052 | 537.16 | 852 | 819 | 236.9 |
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 |  |