Observation information
- date-obs: 2025-03-31
- time-obs: 15:15:33.533500000
- date-end: 2025-03-31
- time-end: 17:22:19.510000000
- obs_id: A13_090T01_9000006458
- exposure: 4943.80710638
- 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_51422cztM0_level2.fits
| modeM0/AS1A13_090T01_9000006458_51422cztM0_level2_quad_clean.evt
|
| Size (bytes) | 562,553,280 | 94,204,800 |
| Size | 536.5 MB
| 89.8 MB
|
| Events in quadrant A | 4,443,158 | 643,375 |
| Events in quadrant B | 4,004,325 | 687,726 |
| Events in quadrant C | 8,218,139 | 494,752 |
| Events in quadrant D | 3,663,639 | 581,019 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17473 | 2 |
| B | 0 | 16156 | 3 |
| C | 0 | 28751 | 2 |
| D | 0 | 15412 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 12 | 0 |
| D | 0 | 12 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 132 | 0 |
| B | 0 | 132 | 0 |
| C | 0 | 132 | 0 |
| D | 0 | 132 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6377 | 187 | 2.932413% |
| B | 6376 | 278 | 4.360100% |
| C | 6376 | 1659 | 26.019448% |
| D | 6376 | 159 | 2.493726% |
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 | 7567 | 6378 | 92 | 92 | 1.22% | 1.44% |  |
| B | 7566 | 6376 | 96 | 96 | 1.27% | 1.51% |  |
| C | 7566 | 6377 | 1328 | 1328 | 17.55% | 20.82% |  |
| D | 7566 | 6377 | 87 | 87 | 1.15% | 1.36% |  |
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 | 537309 | 3036.29 | 728 | 711 | 176.7 |
| A | 12 | 250 | 305905 | 1726.91 | 728 | 711 | 176.7 |
| A | 5 | 240 | 164845 | 928.74 | 728 | 711 | 176.7 |
| B | 5 | 185 | 602787 | 3933.26 | 719 | 695 | 153.1 |
| B | 8 | 234 | 104599 | 678.77 | 719 | 695 | 153.1 |
| B | 0 | 213 | 86588 | 561.11 | 719 | 695 | 153.1 |
| C | 15 | 230 | 2092439 | 11988.73 | 637 | 632 | 174.5 |
| C | 15 | 179 | 1084362 | 6211.16 | 637 | 632 | 174.5 |
| C | 10 | 171 | 831086 | 4759.56 | 637 | 632 | 174.5 |
| D | 7 | 80 | 179923 | 926.89 | 701 | 676 | 193.4 |
| D | 11 | 176 | 143204 | 737.01 | 701 | 676 | 193.4 |
| D | 3 | 12 | 92384 | 474.22 | 701 | 676 | 193.4 |
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 |  |