Observation information
- date-obs: 2026-06-29
- time-obs: 07:51:59.838500000
- date-end: 2026-06-29
- time-end: 09:55:20.819800000
- obs_id: A14_042T02_9000006586
- exposure: 5772.91954213
- 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_58178cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58178cztM0_level2_quad_clean.evt
|
| Size (bytes) | 516,142,080 | 96,595,200 |
| Size | 492.2 MB
| 92.1 MB
|
| Events in quadrant A | 2,964,261 | 653,844 |
| Events in quadrant B | 5,002,373 | 673,615 |
| Events in quadrant C | 2,883,412 | 619,221 |
| Events in quadrant D | 7,772,678 | 543,273 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 12 | 0 |
| D | 0 | 12 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 126 | 0 |
| B | 0 | 126 | 0 |
| C | 0 | 126 | 0 |
| D | 0 | 126 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12969 | 2 |
| B | 0 | 19129 | 1 |
| C | 0 | 12951 | 1 |
| D | 0 | 27566 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6235 | 62 | 0.994387% |
| B | 6236 | 363 | 5.821039% |
| C | 6236 | 48 | 0.769724% |
| D | 6236 | 628 | 10.070558% |
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 | 7400 | 6236 | 6 | 6 | 0.08% | 0.10% |  |
| B | 7401 | 6237 | 191 | 191 | 2.58% | 3.06% |  |
| C | 7401 | 6237 | 1 | 1 | 0.01% | 0.02% |  |
| D | 7401 | 6237 | 719 | 719 | 9.71% | 11.53% |  |
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 | 13 | 248 | 82047 | 451.31 | 737 | 718 | 180.2 |
| A | 4 | 3 | 15817 | 83.79 | 737 | 718 | 180.2 |
| A | 13 | 254 | 9319 | 47.73 | 737 | 718 | 180.2 |
| B | 10 | 128 | 1793340 | 11728.62 | 708 | 682 | 152.8 |
| B | 10 | 247 | 123845 | 805.8 | 708 | 682 | 152.8 |
| B | 5 | 185 | 102655 | 667.17 | 708 | 682 | 152.8 |
| C | 14 | 245 | 53627 | 271.57 | 711 | 703 | 194.9 |
| C | 6 | 223 | 23460 | 116.77 | 711 | 703 | 194.9 |
| C | 12 | 254 | 22793 | 113.35 | 711 | 703 | 194.9 |
| D | 12 | 110 | 3489476 | 17912.27 | 693 | 662 | 194.8 |
| D | 0 | 160 | 993475 | 5097.3 | 693 | 662 | 194.8 |
| D | 7 | 222 | 198202 | 1014.21 | 693 | 662 | 194.8 |
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 |  |