Observation information
- date-obs: 2025-04-05
- time-obs: 01:05:35.340900000
- date-end: 2025-04-05
- time-end: 03:42:26.313000000
- obs_id: A13_090T01_9000006458
- exposure: 6607.19890231
- 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_51490cztM0_level2.fits
| modeM0/AS1A13_090T01_9000006458_51490cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,134,573,120 | 115,200,000 |
| Size | 1.1 GB
| 109.9 MB
|
| Events in quadrant A | 12,347,711 | 698,511 |
| Events in quadrant B | 7,262,992 | 853,802 |
| Events in quadrant C | 8,356,394 | 744,818 |
| Events in quadrant D | 13,304,946 | 537,509 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 43316 | 0 |
| B | 0 | 28364 | 0 |
| C | 0 | 31497 | 0 |
| D | 0 | 46155 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 188 | 0 |
| B | 0 | 188 | 0 |
| C | 0 | 188 | 0 |
| D | 0 | 188 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 9412 | 2064 | 21.929452% |
| B | 9412 | 1070 | 11.368466% |
| C | 9412 | 1282 | 13.620909% |
| D | 9412 | 3075 | 32.671058% |
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 | 9412 | 9412 | 1594 | 1594 | 16.94% | 16.94% |  |
| B | 9412 | 9412 | 687 | 687 | 7.30% | 7.30% |  |
| C | 9412 | 9412 | 1169 | 1169 | 12.42% | 12.42% |  |
| D | 9412 | 9412 | 2905 | 2905 | 30.86% | 30.86% |  |
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 | 3593320 | 16151.09 | 907 | 888 | 222.4 |
| A | 12 | 3 | 2625258 | 11798.81 | 907 | 888 | 222.4 |
| A | 15 | 174 | 934493 | 4197.36 | 907 | 888 | 222.4 |
| B | 2 | 208 | 1617392 | 7980.51 | 943 | 911 | 202.6 |
| B | 12 | 32 | 1275313 | 6291.68 | 943 | 911 | 202.6 |
| B | 5 | 185 | 104147 | 509.67 | 943 | 911 | 202.6 |
| C | 0 | 177 | 3426379 | 13505.46 | 926 | 920 | 253.6 |
| C | 13 | 3 | 641404 | 2525.22 | 926 | 920 | 253.6 |
| C | 15 | 205 | 321508 | 1263.97 | 926 | 920 | 253.6 |
| D | 8 | 176 | 7754223 | 33543.58 | 827 | 797 | 231.1 |
| D | 7 | 60 | 1004359 | 4341.7 | 827 | 797 | 231.1 |
| D | 2 | 249 | 202661 | 873.32 | 827 | 797 | 231.1 |
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 |  |