Observation information
- date-obs: 2026-06-28
- time-obs: 11:06:13.515300000
- date-end: 2026-06-28
- time-end: 13:09:42.031800000
- obs_id: A14_042T02_9000006586
- exposure: 2998.56938261
- 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_58165cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58165cztM0_level2_quad_clean.evt
|
| Size (bytes) | 631,805,760 | 84,487,680 |
| Size | 602.5 MB
| 80.6 MB
|
| Events in quadrant A | 2,989,056 | 639,645 |
| Events in quadrant B | 11,620,673 | 332,240 |
| Events in quadrant C | 3,158,433 | 607,121 |
| Events in quadrant D | 5,127,009 | 537,407 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 128 | 0 |
| B | 0 | 128 | 0 |
| C | 0 | 128 | 0 |
| D | 0 | 128 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13221 | 1 |
| B | 0 | 38946 | 1 |
| C | 0 | 13902 | 1 |
| D | 0 | 19590 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6334 | 95 | 1.499842% |
| B | 6333 | 3625 | 57.239855% |
| C | 6333 | 81 | 1.279015% |
| D | 6334 | 531 | 8.383328% |
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 | 7409 | 6334 | 2 | 2 | 0.03% | 0.03% |  |
| B | 7407 | 6332 | 3222 | 3222 | 43.50% | 50.88% |  |
| C | 7408 | 6333 | 10 | 10 | 0.13% | 0.16% |  |
| D | 7409 | 6334 | 473 | 473 | 6.38% | 7.47% |  |
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 | 37495 | 203.83 | 728 | 709 | 180.5 |
| A | 2 | 143 | 36852 | 200.26 | 728 | 709 | 180.5 |
| A | 13 | 248 | 27472 | 148.29 | 728 | 709 | 180.5 |
| B | 10 | 128 | 8320652 | 73766.38 | 522 | 503 | 112.8 |
| B | 2 | 249 | 716298 | 6346.23 | 522 | 503 | 112.8 |
| B | 5 | 185 | 86322 | 760.87 | 522 | 503 | 112.8 |
| C | 12 | 252 | 118721 | 619.93 | 697 | 690 | 190.4 |
| C | 14 | 96 | 104741 | 546.51 | 697 | 690 | 190.4 |
| C | 14 | 245 | 85467 | 445.27 | 697 | 690 | 190.4 |
| D | 12 | 110 | 1449875 | 7525.34 | 682 | 654 | 192.6 |
| D | 12 | 128 | 389778 | 2020.6 | 682 | 654 | 192.6 |
| D | 8 | 160 | 197095 | 1020.06 | 682 | 654 | 192.6 |
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 |  |