Observation information
- date-obs: 2026-07-01
- time-obs: 13:37:31.289900000
- date-end: 2026-07-01
- time-end: 15:41:33.270000000
- obs_id: A14_042T02_9000006586
- exposure: 6348.5475381
- 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_58211cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58211cztM0_level2_quad_clean.evt
|
| Size (bytes) | 597,358,080 | 102,576,960 |
| Size | 569.7 MB
| 97.8 MB
|
| Events in quadrant A | 3,557,910 | 705,093 |
| Events in quadrant B | 7,113,787 | 657,535 |
| Events in quadrant C | 3,498,785 | 671,316 |
| Events in quadrant D | 7,375,007 | 563,585 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 2 | 0 |
| B | 0 | 2 | 0 |
| C | 0 | 2 | 0 |
| D | 0 | 2 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 148 | 0 |
| B | 0 | 148 | 0 |
| C | 0 | 148 | 0 |
| D | 0 | 148 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15913 | 1 |
| B | 0 | 26183 | 1 |
| C | 0 | 15918 | 1 |
| D | 0 | 26975 | 4 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7307 | 82 | 1.122212% |
| B | 7308 | 1082 | 14.805692% |
| C | 7308 | 44 | 0.602080% |
| D | 7307 | 906 | 12.399069% |
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 | 7442 | 7310 | 33 | 33 | 0.44% | 0.45% |  |
| B | 7443 | 7309 | 649 | 649 | 8.72% | 8.88% |  |
| C | 7443 | 7311 | 29 | 29 | 0.39% | 0.40% |  |
| D | 7442 | 7308 | 886 | 886 | 11.91% | 12.12% |  |
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 | 134943 | 663.85 | 817 | 795 | 202.1 |
| A | 13 | 248 | 95202 | 467.19 | 817 | 795 | 202.1 |
| A | 3 | 245 | 67550 | 330.35 | 817 | 795 | 202.1 |
| B | 2 | 249 | 1792626 | 11012.04 | 756 | 728 | 162.7 |
| B | 10 | 128 | 1691761 | 10392.18 | 756 | 728 | 162.7 |
| B | 0 | 153 | 115041 | 702.51 | 756 | 728 | 162.7 |
| C | 13 | 3 | 204374 | 943.48 | 787 | 780 | 215.8 |
| C | 12 | 252 | 91025 | 418.2 | 787 | 780 | 215.8 |
| C | 3 | 248 | 40665 | 184.83 | 787 | 780 | 215.8 |
| D | 2 | 31 | 2075789 | 9948.04 | 737 | 704 | 208.6 |
| D | 8 | 160 | 1472610 | 7056.37 | 737 | 704 | 208.6 |
| D | 7 | 222 | 258687 | 1236.78 | 737 | 704 | 208.6 |
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 |  |