Observation information
- date-obs: 2026-06-27
- time-obs: 05:30:36.352500000
- date-end: 2026-06-27
- time-end: 07:38:48.329400000
- obs_id: A14_042T02_9000006586
- exposure: 2625.78613919
- sourceid: NGC4038
- observer: pshalima
- ra_pnt: 180.4708
- dec_pnt: -18.86759
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_042T02_9000006586_58147cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58147cztM0_level2_quad_clean.evt
|
| Size (bytes) | 767,802,240 | 85,504,320 |
| Size | 732.2 MB
| 81.5 MB
|
| Events in quadrant A | 3,094,443 | 664,788 |
| Events in quadrant B | 12,955,634 | 281,062 |
| Events in quadrant C | 3,104,397 | 630,028 |
| Events in quadrant D | 8,756,943 | 553,594 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 134 | 0 |
| B | 0 | 134 | 0 |
| C | 0 | 134 | 0 |
| D | 0 | 134 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13692 | 2 |
| B | 0 | 43094 | 2 |
| C | 0 | 13875 | 2 |
| D | 0 | 30625 | 5 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6589 | 103 | 1.563211% |
| B | 6589 | 4208 | 63.864016% |
| C | 6589 | 76 | 1.153438% |
| D | 6588 | 623 | 9.456588% |
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 | 7639 | 6589 | 8 | 8 | 0.10% | 0.12% |  |
| B | 7638 | 6588 | 3669 | 3669 | 48.04% | 55.69% |  |
| C | 7639 | 6589 | 5 | 5 | 0.07% | 0.08% |  |
| D | 7638 | 6588 | 545 | 545 | 7.14% | 8.27% |  |
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 | 11 | 3 | 90028 | 478.33 | 761 | 744 | 186.7 |
| A | 3 | 245 | 47454 | 250.24 | 761 | 744 | 186.7 |
| A | 3 | 14 | 11630 | 58.32 | 761 | 744 | 186.7 |
| B | 10 | 128 | 10301871 | 101053.06 | 472 | 453 | 101.9 |
| B | 5 | 185 | 383730 | 3759.8 | 472 | 453 | 101.9 |
| B | 4 | 201 | 163028 | 1594.8 | 472 | 453 | 101.9 |
| C | 12 | 252 | 108612 | 534.94 | 739 | 734 | 201.7 |
| C | 6 | 223 | 34283 | 166.36 | 739 | 734 | 201.7 |
| C | 14 | 254 | 31928 | 154.68 | 739 | 734 | 201.7 |
| D | 12 | 110 | 4595221 | 22888.16 | 709 | 677 | 200.7 |
| D | 8 | 160 | 1042125 | 5188.07 | 709 | 677 | 200.7 |
| D | 2 | 249 | 141112 | 699.59 | 709 | 677 | 200.7 |
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 |  |