Observation information
- date-obs: 2026-07-01
- time-obs: 23:31:28.194300000
- date-end: 2026-07-02
- time-end: 02:05:19.166200000
- obs_id: A14_042T02_9000006586
- exposure: 7321.92504436
- 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_58217cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58217cztM0_level2_quad_clean.evt
|
| Size (bytes) | 465,448,320 | 110,053,440 |
| Size | 443.9 MB
| 105.0 MB
|
| Events in quadrant A | 3,575,664 | 724,513 |
| Events in quadrant B | 4,227,159 | 767,940 |
| Events in quadrant C | 3,810,914 | 680,008 |
| Events in quadrant D | 5,023,089 | 629,717 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16 | 0 |
| B | 0 | 16 | 0 |
| C | 0 | 16 | 0 |
| D | 0 | 16 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 156 | 0 |
| B | 0 | 156 | 0 |
| C | 0 | 156 | 0 |
| D | 0 | 156 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16359 | 2 |
| B | 0 | 17651 | 3 |
| C | 0 | 17012 | 2 |
| D | 0 | 20315 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7622 | 71 | 0.931514% |
| B | 7621 | 157 | 2.060097% |
| C | 7621 | 136 | 1.784543% |
| D | 7621 | 298 | 3.910248% |
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 | 9232 | 7624 | 31 | 31 | 0.34% | 0.41% |  |
| B | 9231 | 7621 | 53 | 53 | 0.57% | 0.70% |  |
| C | 9231 | 7623 | 112 | 112 | 1.21% | 1.47% |  |
| D | 9231 | 7622 | 270 | 270 | 2.92% | 3.54% |  |
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 | 281964 | 1374.35 | 826 | 804 | 204.6 |
| A | 13 | 248 | 24150 | 114.12 | 826 | 804 | 204.6 |
| A | 3 | 245 | 20485 | 96.2 | 826 | 804 | 204.6 |
| B | 10 | 128 | 550255 | 3148.48 | 814 | 783 | 174.5 |
| B | 4 | 236 | 117230 | 667.24 | 814 | 783 | 174.5 |
| B | 0 | 153 | 64052 | 362.53 | 814 | 783 | 174.5 |
| C | 6 | 223 | 352299 | 1590.57 | 797 | 787 | 221.0 |
| C | 12 | 252 | 247461 | 1116.18 | 797 | 787 | 221.0 |
| C | 14 | 254 | 56097 | 250.27 | 797 | 787 | 221.0 |
| D | 3 | 224 | 513350 | 2322.1 | 782 | 748 | 220.7 |
| D | 8 | 240 | 349762 | 1581.04 | 782 | 748 | 220.7 |
| D | 7 | 222 | 320241 | 1447.31 | 782 | 748 | 220.7 |
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 |  |