Observation information
- date-obs: 2026-06-26
- time-obs: 15:39:13.493100000
- date-end: 2026-06-26
- time-end: 17:46:36.465700000
- obs_id: A14_042T02_9000006586
- exposure: 4267.93228489
- 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_58138cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58138cztM0_level2_quad_clean.evt
|
| Size (bytes) | 707,561,280 | 99,267,840 |
| Size | 674.8 MB
| 94.7 MB
|
| Events in quadrant A | 3,541,683 | 727,425 |
| Events in quadrant B | 5,776,920 | 706,564 |
| Events in quadrant C | 3,748,814 | 682,096 |
| Events in quadrant D | 12,559,567 | 382,981 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 4 | 0 |
| B | 0 | 4 | 0 |
| C | 0 | 4 | 0 |
| D | 0 | 4 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 146 | 0 |
| B | 0 | 146 | 0 |
| C | 0 | 146 | 0 |
| D | 0 | 146 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15435 | 1 |
| B | 0 | 22068 | 1 |
| C | 0 | 16350 | 1 |
| D | 0 | 42409 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7278 | 21 | 0.288541% |
| B | 7279 | 740 | 10.166232% |
| C | 7279 | 46 | 0.631955% |
| D | 7278 | 3410 | 46.853531% |
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 | 7643 | 7279 | 3 | 3 | 0.04% | 0.04% |  |
| B | 7643 | 7279 | 547 | 547 | 7.16% | 7.51% |  |
| C | 7644 | 7280 | 32 | 32 | 0.42% | 0.44% |  |
| D | 7643 | 7279 | 2790 | 2790 | 36.50% | 38.33% |  |
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 | 11 | 3 | 195782 | 956.43 | 821 | 802 | 203.9 |
| A | 3 | 14 | 47552 | 229.32 | 821 | 802 | 203.9 |
| A | 13 | 248 | 41437 | 199.33 | 821 | 802 | 203.9 |
| B | 10 | 128 | 1494337 | 8974.38 | 775 | 748 | 166.4 |
| B | 2 | 249 | 522021 | 3132.12 | 775 | 748 | 166.4 |
| B | 5 | 185 | 220292 | 1319.15 | 775 | 748 | 166.4 |
| C | 6 | 223 | 349771 | 1614.42 | 787 | 779 | 216.2 |
| C | 9 | 38 | 143936 | 662.24 | 787 | 779 | 216.2 |
| C | 12 | 252 | 120016 | 551.58 | 787 | 779 | 216.2 |
| D | 12 | 110 | 8765922 | 46164.37 | 663 | 635 | 189.9 |
| D | 8 | 240 | 380070 | 1998.38 | 663 | 635 | 189.9 |
| D | 8 | 160 | 307139 | 1614.27 | 663 | 635 | 189.9 |
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 |  |