Observation information
- date-obs: 2025-04-05
- time-obs: 16:26:30.165300000
- date-end: 2025-04-05
- time-end: 18:50:57.137600000
- obs_id: A13_090T01_9000006458
- exposure: 4670.07018387
- 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_51497cztM0_level2.fits
| modeM0/AS1A13_090T01_9000006458_51497cztM0_level2_quad_clean.evt
|
| Size (bytes) | 641,286,720 | 92,424,960 |
| Size | 611.6 MB
| 88.1 MB
|
| Events in quadrant A | 5,550,505 | 624,276 |
| Events in quadrant B | 3,955,166 | 683,771 |
| Events in quadrant C | 3,934,798 | 613,690 |
| Events in quadrant D | 9,774,290 | 405,660 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 21010 | 2 |
| B | 0 | 16083 | 2 |
| C | 0 | 16344 | 2 |
| D | 0 | 33739 | 9 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 19 | 0 |
| B | 0 | 19 | 0 |
| C | 0 | 19 | 0 |
| D | 0 | 19 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 140 | 0 |
| B | 0 | 140 | 0 |
| C | 0 | 140 | 0 |
| D | 0 | 140 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6754 | 448 | 6.633106% |
| B | 6755 | 278 | 4.115470% |
| C | 6755 | 204 | 3.019985% |
| D | 6754 | 2390 | 35.386438% |
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 | 8667 | 6754 | 273 | 273 | 3.15% | 4.04% |  |
| B | 8668 | 6755 | 38 | 38 | 0.44% | 0.56% |  |
| C | 8668 | 6755 | 110 | 110 | 1.27% | 1.63% |  |
| D | 8667 | 6754 | 2269 | 2269 | 26.18% | 33.59% |  |
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 | 729363 | 4027.73 | 742 | 725 | 180.9 |
| A | 8 | 43 | 597318 | 3297.82 | 742 | 725 | 180.9 |
| A | 12 | 250 | 238538 | 1314.57 | 742 | 725 | 180.9 |
| B | 4 | 81 | 224731 | 1406.06 | 740 | 714 | 159.3 |
| B | 10 | 254 | 155823 | 973.55 | 740 | 714 | 159.3 |
| B | 15 | 52 | 118057 | 736.51 | 740 | 714 | 159.3 |
| C | 12 | 247 | 286120 | 1430.92 | 729 | 723 | 199.4 |
| C | 3 | 233 | 141405 | 705.35 | 729 | 723 | 199.4 |
| C | 13 | 3 | 136403 | 680.27 | 729 | 723 | 199.4 |
| D | 8 | 176 | 3370386 | 19475.12 | 620 | 599 | 173.0 |
| D | 11 | 176 | 2951283 | 17052.99 | 620 | 599 | 173.0 |
| D | 2 | 216 | 642638 | 3710.56 | 620 | 599 | 173.0 |
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 |  |