Observation information
- date-obs: 2026-06-29
- time-obs: 16:27:19.755200000
- date-end: 2026-06-29
- time-end: 18:35:47.734000000
- obs_id: A14_042T02_9000006586
- exposure: 6213.48828894
- 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_58183cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58183cztM0_level2_quad_clean.evt
|
| Size (bytes) | 667,457,280 | 107,484,480 |
| Size | 636.5 MB
| 102.5 MB
|
| Events in quadrant A | 3,469,747 | 745,610 |
| Events in quadrant B | 6,835,134 | 731,748 |
| Events in quadrant C | 3,491,386 | 704,521 |
| Events in quadrant D | 10,313,761 | 536,523 |
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 | 15943 | 0 |
| B | 0 | 25491 | 1 |
| C | 0 | 16146 | 0 |
| D | 0 | 35960 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7708 | 20 | 0.259471% |
| B | 7707 | 749 | 9.718438% |
| C | 7707 | 18 | 0.233554% |
| D | 7708 | 1694 | 21.977167% |
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 | 7708 | 7708 | 11 | 11 | 0.14% | 0.14% |  |
| B | 7707 | 7707 | 579 | 579 | 7.51% | 7.51% |  |
| C | 7707 | 7707 | 5 | 5 | 0.06% | 0.06% |  |
| D | 7708 | 7708 | 1469 | 1469 | 19.06% | 19.06% |  |
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 | 3 | 245 | 75004 | 349.6 | 856 | 834 | 212.2 |
| A | 4 | 3 | 31424 | 144.19 | 856 | 834 | 212.2 |
| A | 11 | 3 | 30724 | 140.89 | 856 | 834 | 212.2 |
| B | 10 | 128 | 1840409 | 10559.32 | 810 | 778 | 174.2 |
| B | 2 | 249 | 1357870 | 7789.59 | 810 | 778 | 174.2 |
| B | 5 | 185 | 92623 | 527.18 | 810 | 778 | 174.2 |
| C | 12 | 252 | 61740 | 269.48 | 825 | 817 | 226.1 |
| C | 6 | 223 | 47337 | 205.77 | 825 | 817 | 226.1 |
| C | 14 | 245 | 42088 | 182.55 | 825 | 817 | 226.1 |
| D | 12 | 110 | 3705497 | 17574.4 | 740 | 705 | 210.8 |
| D | 8 | 160 | 2962012 | 14047.53 | 740 | 705 | 210.8 |
| D | 8 | 240 | 276993 | 1310.63 | 740 | 705 | 210.8 |
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 |  |