Observation information
- date-obs: 2026-06-30
- time-obs: 01:02:15.667400000
- date-end: 2026-06-30
- time-end: 03:16:22.642600000
- obs_id: A14_042T02_9000006586
- exposure: 6088.47168434
- 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_58188cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58188cztM0_level2_quad_clean.evt
|
| Size (bytes) | 563,800,320 | 96,672,960 |
| Size | 537.7 MB
| 92.2 MB
|
| Events in quadrant A | 2,960,677 | 649,643 |
| Events in quadrant B | 5,293,363 | 670,533 |
| Events in quadrant C | 2,992,282 | 615,461 |
| Events in quadrant D | 9,097,644 | 518,084 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 13 | 0 |
| C | 0 | 13 | 0 |
| D | 0 | 13 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 138 | 0 |
| B | 0 | 138 | 0 |
| C | 0 | 138 | 0 |
| D | 0 | 138 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13841 | 2 |
| B | 0 | 20334 | 2 |
| C | 0 | 13983 | 2 |
| D | 0 | 31819 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6791 | 49 | 0.721543% |
| B | 6790 | 405 | 5.964654% |
| C | 6790 | 49 | 0.721649% |
| D | 6790 | 910 | 13.402062% |
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 | 7661 | 6792 | 4 | 4 | 0.05% | 0.06% |  |
| B | 7660 | 6791 | 207 | 207 | 2.70% | 3.05% |  |
| C | 7660 | 6791 | 6 | 6 | 0.08% | 0.09% |  |
| D | 7660 | 6791 | 859 | 859 | 11.21% | 12.65% |  |
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 | 4 | 3 | 26209 | 139.13 | 747 | 729 | 183.1 |
| A | 3 | 245 | 12531 | 64.44 | 747 | 729 | 183.1 |
| A | 11 | 3 | 9736 | 49.18 | 747 | 729 | 183.1 |
| B | 10 | 128 | 2008467 | 12818.33 | 729 | 704 | 156.6 |
| B | 7 | 252 | 73305 | 463.51 | 729 | 704 | 156.6 |
| B | 0 | 63 | 53712 | 338.42 | 729 | 704 | 156.6 |
| C | 12 | 252 | 56237 | 277.58 | 727 | 719 | 200.0 |
| C | 6 | 223 | 41360 | 203.2 | 727 | 719 | 200.0 |
| C | 15 | 201 | 19946 | 96.13 | 727 | 719 | 200.0 |
| D | 12 | 110 | 5279635 | 27195.06 | 688 | 657 | 194.1 |
| D | 6 | 239 | 238974 | 1227.71 | 688 | 657 | 194.1 |
| D | 8 | 240 | 233027 | 1197.07 | 688 | 657 | 194.1 |
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 |  |