Observation information
- date-obs: 2025-04-08
- time-obs: 09:08:12.444300000
- date-end: 2025-04-08
- time-end: 11:10:20.420700000
- obs_id: A13_090T01_9000006458
- exposure: 1592.73121452
- 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_51537cztM0_level2.fits
| modeM0/AS1A13_090T01_9000006458_51537cztM0_level2_quad_clean.evt
|
Size (bytes) | 859,121,280 | 77,307,840 |
Size | 819.3 MB
| 73.7 MB
|
Events in quadrant A | 7,763,722 | 543,656 |
Events in quadrant B | 4,264,920 | 646,056 |
Events in quadrant C | 4,952,477 | 570,052 |
Events in quadrant D | 14,335,198 | 142,206 |
Level1 data integrity
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 27517 | 1 |
B | 0 | 16908 | 1 |
C | 0 | 19017 | 2 |
D | 0 | 46953 | 1 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 10 | 0 |
B | 0 | 10 | 0 |
C | 0 | 10 | 0 |
D | 0 | 10 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 128 | 0 |
B | 0 | 128 | 0 |
C | 0 | 128 | 0 |
D | 0 | 128 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 6283 | 855 | 13.608149% |
B | 6284 | 223 | 3.548695% |
C | 6283 | 295 | 4.695209% |
D | 6283 | 4931 | 78.481617% |
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 | 7328 | 6283 | 586 | 586 | 8.00% | 9.33% |  |
B | 7329 | 6285 | 84 | 84 | 1.15% | 1.34% |  |
C | 7327 | 6283 | 177 | 177 | 2.42% | 2.82% |  |
D | 7327 | 6283 | 4542 | 4542 | 61.99% | 72.29% |  |
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 | 2970616 | 18071.6 | 667 | 651 | 164.3 |
A | 12 | 250 | 673526 | 4094.3 | 667 | 651 | 164.3 |
A | 12 | 194 | 382335 | 2322.47 | 667 | 651 | 164.3 |
B | 15 | 52 | 369899 | 2523.74 | 683 | 659 | 146.3 |
B | 10 | 44 | 309613 | 2111.69 | 683 | 659 | 146.3 |
B | 0 | 171 | 188358 | 1282.92 | 683 | 659 | 146.3 |
C | 3 | 233 | 815220 | 4453.4 | 665 | 659 | 182.9 |
C | 3 | 242 | 784676 | 4286.41 | 665 | 659 | 182.9 |
C | 13 | 3 | 337800 | 1843.23 | 665 | 659 | 182.9 |
D | 8 | 176 | 12567388 | 123988.33 | 364 | 352 | 101.4 |
D | 0 | 113 | 88191 | 866.63 | 364 | 352 | 101.4 |
D | 5 | 173 | 31534 | 307.65 | 364 | 352 | 101.4 |
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 |  |