Observation information
- date-obs: 2026-06-23
- time-obs: 21:46:39.160100000
- date-end: 2026-06-23
- time-end: 23:55:19.126200000
- obs_id: A14_042T02_9000006586
- exposure: 4750.92078966
- 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_58097cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58097cztM0_level2_quad_clean.evt
|
| Size (bytes) | 983,177,280 | 93,136,320 |
| Size | 937.6 MB
| 88.8 MB
|
| Events in quadrant A | 5,093,095 | 664,031 |
| Events in quadrant B | 13,350,568 | 481,777 |
| Events in quadrant C | 4,125,827 | 696,869 |
| Events in quadrant D | 13,228,645 | 440,087 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 154 | 0 |
| B | 0 | 154 | 0 |
| C | 0 | 154 | 0 |
| D | 0 | 154 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 20908 | 0 |
| B | 0 | 44996 | 0 |
| C | 0 | 17869 | 0 |
| D | 0 | 44699 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7720 | 752 | 9.740933% |
| B | 7721 | 3453 | 44.722186% |
| C | 7720 | 79 | 1.023316% |
| D | 7720 | 2700 | 34.974093% |
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 | 7720 | 7720 | 611 | 611 | 7.91% | 7.91% |  |
| B | 7721 | 7721 | 2773 | 2773 | 35.92% | 35.92% |  |
| C | 7720 | 7720 | 79 | 79 | 1.02% | 1.02% |  |
| D | 7720 | 7720 | 2967 | 2967 | 38.43% | 38.43% |  |
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 | 253 | 1837150 | 9189.24 | 802 | 780 | 199.8 |
| A | 10 | 251 | 84657 | 419.72 | 802 | 780 | 199.8 |
| A | 3 | 61 | 22435 | 108.36 | 802 | 780 | 199.8 |
| B | 10 | 128 | 9359608 | 59692.5 | 723 | 695 | 156.8 |
| B | 5 | 172 | 823255 | 5246.41 | 723 | 695 | 156.8 |
| B | 5 | 185 | 66703 | 421.01 | 723 | 695 | 156.8 |
| C | 12 | 252 | 707779 | 3138.53 | 823 | 817 | 225.3 |
| C | 6 | 223 | 70278 | 308.37 | 823 | 817 | 225.3 |
| C | 15 | 208 | 65901 | 288.94 | 823 | 817 | 225.3 |
| D | 12 | 110 | 9875470 | 47095.94 | 742 | 709 | 209.7 |
| D | 12 | 1 | 69562 | 328.38 | 742 | 709 | 209.7 |
| D | 5 | 32 | 66297 | 312.81 | 742 | 709 | 209.7 |
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 |  |