Observation information
- date-obs: 2026-06-24
- time-obs: 06:32:57.721900000
- date-end: 2026-06-24
- time-end: 08:34:06.049900000
- obs_id: A14_042T02_9000006586
- exposure: 495.343935072
- 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_58103cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58103cztM0_level2_quad_clean.evt
|
| Size (bytes) | 913,521,600 | 63,933,120 |
| Size | 871.2 MB
| 61.0 MB
|
| Events in quadrant A | 3,289,153 | 615,709 |
| Events in quadrant B | 12,121,209 | 251,767 |
| Events in quadrant C | 3,015,840 | 587,680 |
| Events in quadrant D | 14,904,703 | 44,213 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10 | 0 |
| B | 0 | 10 | 0 |
| C | 0 | 10 | 0 |
| D | 0 | 10 | 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 | 14142 | 1 |
| B | 0 | 40279 | 1 |
| C | 0 | 13294 | 1 |
| D | 0 | 48612 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6249 | 137 | 2.192351% |
| B | 6250 | 4123 | 65.968000% |
| C | 6250 | 79 | 1.264000% |
| D | 6250 | 5838 | 93.408000% |
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 | 7269 | 6249 | 44 | 44 | 0.61% | 0.70% |  |
| B | 7269 | 6249 | 3475 | 3475 | 47.81% | 55.61% |  |
| C | 7270 | 6250 | 15 | 15 | 0.21% | 0.24% |  |
| D | 7269 | 6249 | 5577 | 5577 | 76.72% | 89.25% |  |
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 | 438437 | 2498.67 | 712 | 695 | 175.2 |
| A | 3 | 245 | 22999 | 127.31 | 712 | 695 | 175.2 |
| A | 11 | 3 | 19753 | 108.78 | 712 | 695 | 175.2 |
| B | 5 | 172 | 7159407 | 62975.83 | 521 | 501 | 113.7 |
| B | 10 | 128 | 2696591 | 23717.1 | 521 | 501 | 113.7 |
| B | 4 | 171 | 52608 | 458.38 | 521 | 501 | 113.7 |
| C | 12 | 252 | 176545 | 935.62 | 688 | 681 | 188.0 |
| C | 15 | 208 | 59944 | 315.29 | 688 | 681 | 188.0 |
| C | 6 | 223 | 49789 | 261.26 | 688 | 681 | 188.0 |
| D | 12 | 110 | 12937608 | 125622.68 | 358 | 341 | 103.0 |
| D | 8 | 160 | 274772 | 2664.76 | 358 | 341 | 103.0 |
| D | 3 | 224 | 91129 | 881.56 | 358 | 341 | 103.0 |
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 |  |