Observation information
- date-obs: 2025-04-05
- time-obs: 20:08:52.125800000
- date-end: 2025-04-05
- time-end: 22:21:48.087900000
- obs_id: A13_090T01_9000006458
- exposure: 4015.66108555
- 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_51499cztM0_level2.fits
| modeM0/AS1A13_090T01_9000006458_51499cztM0_level2_quad_clean.evt
|
Size (bytes) | 1,128,689,280 | 89,593,920 |
Size | 1.1 GB
| 85.4 MB
|
Events in quadrant A | 6,712,026 | 699,217 |
Events in quadrant B | 14,029,652 | 414,928 |
Events in quadrant C | 4,644,194 | 709,787 |
Events in quadrant D | 15,780,667 | 335,567 |
Level1 data integrity
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 25437 | 1 |
B | 0 | 47086 | 1 |
C | 0 | 19463 | 1 |
D | 0 | 52373 | 1 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 1 | 140505114794024 | 140501265154094 |
B | 1 | -1 | -1 |
C | 1 | -1 | -1 |
D | 1 | -1 | -1 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 158 | 0 |
B | 0 | 158 | 0 |
C | 0 | 158 | 0 |
D | 0 | 158 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 7956 | 802 | 10.080442% |
B | 7956 | 4275 | 53.733032% |
C | 7956 | 239 | 3.004022% |
D | 7956 | 4302 | 54.072398% |
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 | 7976 | 7961 | 531 | 531 | 6.66% | 6.67% |  |
B | 7976 | 7961 | 3665 | 3665 | 45.95% | 46.04% |  |
C | 7976 | 7961 | 190 | 190 | 2.38% | 2.39% |  |
D | 7976 | 7960 | 4574 | 4574 | 57.35% | 57.46% |  |
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 | 250 | 966995 | 4670.42 | 838 | 818 | 206.9 |
A | 12 | 3 | 499210 | 2409.19 | 838 | 818 | 206.9 |
A | 12 | 194 | 353330 | 1704.01 | 838 | 818 | 206.9 |
B | 4 | 81 | 10257436 | 72077.14 | 662 | 639 | 142.3 |
B | 2 | 208 | 311421 | 2183.94 | 662 | 639 | 142.3 |
B | 15 | 52 | 184307 | 1290.68 | 662 | 639 | 142.3 |
C | 13 | 3 | 338428 | 1446.57 | 845 | 838 | 233.4 |
C | 12 | 252 | 194835 | 831.27 | 845 | 838 | 233.4 |
C | 3 | 233 | 167785 | 715.37 | 845 | 838 | 233.4 |
D | 8 | 176 | 11964513 | 66065.91 | 647 | 623 | 181.1 |
D | 11 | 176 | 767399 | 4234.22 | 647 | 623 | 181.1 |
D | 2 | 216 | 194630 | 1071.33 | 647 | 623 | 181.1 |
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 |  |