Observation information
- date-obs: 2025-04-08
- time-obs: 01:13:11.534800000
- date-end: 2025-04-08
- time-end: 03:06:31.513100000
- obs_id: A13_090T01_9000006458
- exposure: 4168.97239763
- 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_51534cztM0_level2.fits
| modeM0/AS1A13_090T01_9000006458_51534cztM0_level2_quad_clean.evt
|
Size (bytes) | 752,500,800 | 72,132,480 |
Size | 717.6 MB
| 68.8 MB
|
Events in quadrant A | 7,658,241 | 406,399 |
Events in quadrant B | 3,918,380 | 543,266 |
Events in quadrant C | 9,378,615 | 372,212 |
Events in quadrant D | 6,405,344 | 405,732 |
Level1 data integrity
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 41532 | 14380 |
B | 0 | 22553 | 6129 |
C | 0 | 48274 | 16123 |
D | 0 | 35638 | 11935 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 2 | 1 |
B | 0 | 2 | 1 |
C | 0 | 1 | 0 |
D | 0 | 1 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 140598351751208 | 140595754434606 |
B | 0 | -1 | -1 |
C | 0 | -1 | -1 |
D | 0 | -1 | -1 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 6217 | 1003 | 16.133183% |
B | 6760 | 283 | 4.186391% |
C | 6124 | 1263 | 20.623775% |
D | 6466 | 847 | 13.099289% |
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 | 9419 | 6899 | 541 | 541 | 5.74% | 7.84% |  |
B | 9491 | 7394 | 85 | 85 | 0.90% | 1.15% |  |
C | 9416 | 6863 | 994 | 994 | 10.56% | 14.48% |  |
D | 9416 | 7140 | 589 | 589 | 6.26% | 8.25% |  |
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 | 1939906 | 12338.92 | 632 | 616 | 157.2 |
A | 7 | 64 | 1195477 | 7602.42 | 632 | 616 | 157.2 |
A | 12 | 250 | 603598 | 3836.53 | 632 | 616 | 157.2 |
B | 10 | 247 | 304404 | 1962.68 | 718 | 691 | 154.7 |
B | 1 | 207 | 229964 | 1481.62 | 718 | 691 | 154.7 |
B | 5 | 172 | 111090 | 713.43 | 718 | 691 | 154.7 |
C | 3 | 233 | 4300522 | 25317.41 | 611 | 604 | 169.8 |
C | 3 | 242 | 1950588 | 11481.28 | 611 | 604 | 169.8 |
C | 13 | 3 | 194345 | 1140.72 | 611 | 604 | 169.8 |
D | 8 | 176 | 2938814 | 16419.03 | 644 | 623 | 179.0 |
D | 7 | 60 | 234991 | 1309.68 | 644 | 623 | 179.0 |
D | 2 | 249 | 137608 | 765.49 | 644 | 623 | 179.0 |
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 |  |