Observation information
- date-obs: 2026-06-29
- time-obs: 13:05:58.787800000
- date-end: 2026-06-29
- time-end: 15:08:45.767100000
- obs_id: A14_042T02_9000006586
- exposure: 5376.1555813
- 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_58181cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58181cztM0_level2_quad_clean.evt
|
| Size (bytes) | 558,541,440 | 94,541,760 |
| Size | 532.7 MB
| 90.2 MB
|
| Events in quadrant A | 3,026,685 | 654,845 |
| Events in quadrant B | 7,561,457 | 573,309 |
| Events in quadrant C | 3,317,752 | 627,833 |
| Events in quadrant D | 6,247,514 | 538,114 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 6 | 0 |
| B | 0 | 6 | 0 |
| C | 0 | 6 | 0 |
| D | 0 | 6 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 136 | 0 |
| B | 0 | 136 | 0 |
| C | 0 | 136 | 0 |
| D | 0 | 136 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13981 | 1 |
| B | 0 | 27062 | 3 |
| C | 0 | 14958 | 1 |
| D | 0 | 23120 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6722 | 106 | 1.576912% |
| B | 6722 | 1502 | 22.344540% |
| C | 6722 | 100 | 1.487652% |
| D | 6722 | 771 | 11.469801% |
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 | 7367 | 6723 | 1 | 1 | 0.01% | 0.01% |  |
| B | 7367 | 6723 | 1075 | 1075 | 14.59% | 15.99% |  |
| C | 7367 | 6723 | 48 | 48 | 0.65% | 0.71% |  |
| D | 7367 | 6723 | 628 | 628 | 8.52% | 9.34% |  |
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 | 8 | 6 | 29144 | 150.9 | 762 | 743 | 188.2 |
| A | 4 | 3 | 17344 | 88.2 | 762 | 743 | 188.2 |
| A | 6 | 226 | 11590 | 57.63 | 762 | 743 | 188.2 |
| B | 10 | 128 | 2361377 | 15871.84 | 688 | 664 | 148.7 |
| B | 2 | 249 | 1940255 | 13040.5 | 688 | 664 | 148.7 |
| B | 4 | 201 | 291955 | 1958.44 | 688 | 664 | 148.7 |
| C | 14 | 245 | 295751 | 1466.1 | 733 | 726 | 201.2 |
| C | 15 | 201 | 58458 | 286.89 | 733 | 726 | 201.2 |
| C | 12 | 252 | 41913 | 204.68 | 733 | 726 | 201.2 |
| D | 12 | 110 | 1992734 | 9846.18 | 714 | 685 | 202.3 |
| D | 8 | 160 | 556299 | 2746.26 | 714 | 685 | 202.3 |
| D | 8 | 240 | 253901 | 1251.58 | 714 | 685 | 202.3 |
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 |  |