Observation information
- date-obs: 2026-06-24
- time-obs: 15:06:53.985100000
- date-end: 2026-06-24
- time-end: 17:14:53.965100000
- obs_id: A14_042T02_9000006586
- exposure: 3662.0498333
- 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_58108cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58108cztM0_level2_quad_clean.evt
|
| Size (bytes) | 668,577,600 | 89,812,800 |
| Size | 637.6 MB
| 85.7 MB
|
| Events in quadrant A | 3,181,251 | 677,871 |
| Events in quadrant B | 11,211,254 | 390,549 |
| Events in quadrant C | 3,217,457 | 639,868 |
| Events in quadrant D | 6,609,186 | 535,421 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 8 | 0 |
| B | 0 | 8 | 0 |
| C | 0 | 8 | 0 |
| D | 0 | 8 | 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 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14386 | 2 |
| B | 0 | 38036 | 1 |
| C | 0 | 14615 | 1 |
| D | 0 | 24342 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6819 | 43 | 0.630591% |
| B | 6820 | 3353 | 49.164223% |
| C | 6820 | 35 | 0.513196% |
| D | 6820 | 872 | 12.785924% |
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 | 7679 | 6820 | 11 | 11 | 0.14% | 0.16% |  |
| B | 7680 | 6821 | 3035 | 3035 | 39.52% | 44.49% |  |
| C | 7680 | 6821 | 21 | 21 | 0.27% | 0.31% |  |
| D | 7680 | 6821 | 920 | 920 | 11.98% | 13.49% |  |
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 | 10 | 251 | 106720 | 564.13 | 763 | 744 | 187.9 |
| A | 3 | 245 | 41216 | 215.44 | 763 | 744 | 187.9 |
| A | 3 | 61 | 29465 | 152.89 | 763 | 744 | 187.9 |
| B | 5 | 172 | 5779877 | 44234.75 | 605 | 583 | 130.7 |
| B | 10 | 128 | 2794973 | 21388.28 | 605 | 583 | 130.7 |
| B | 5 | 185 | 53044 | 401.54 | 605 | 583 | 130.7 |
| C | 15 | 208 | 164392 | 804.62 | 732 | 726 | 203.4 |
| C | 9 | 38 | 80968 | 394.49 | 732 | 726 | 203.4 |
| C | 12 | 252 | 66658 | 324.14 | 732 | 726 | 203.4 |
| D | 12 | 110 | 2719955 | 13741.75 | 699 | 670 | 197.9 |
| D | 0 | 160 | 823552 | 4158.39 | 699 | 670 | 197.9 |
| D | 8 | 160 | 106923 | 536.94 | 699 | 670 | 197.9 |
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 |  |