Observation information
- date-obs: 2026-06-26
- time-obs: 17:13:56.478200000
- date-end: 2026-06-26
- time-end: 19:31:06.444600000
- obs_id: A14_042T02_9000006586
- exposure: 1664.46418238
- 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_58139cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58139cztM0_level2_quad_clean.evt
|
| Size (bytes) | 990,437,760 | 89,720,640 |
| Size | 944.6 MB
| 85.6 MB
|
| Events in quadrant A | 4,091,805 | 756,651 |
| Events in quadrant B | 18,133,466 | 178,078 |
| Events in quadrant C | 3,989,089 | 722,010 |
| Events in quadrant D | 9,834,832 | 509,504 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 3 | 0 |
| B | 0 | 4 | 0 |
| C | 0 | 4 | 0 |
| D | 0 | 4 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 160 | 0 |
| B | 0 | 160 | 0 |
| C | 0 | 160 | 0 |
| D | 0 | 160 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17825 | 1 |
| B | 0 | 59391 | 5 |
| C | 0 | 17689 | 1 |
| D | 0 | 34682 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7913 | 172 | 2.173638% |
| B | 7912 | 6470 | 81.774520% |
| C | 7912 | 109 | 1.377654% |
| D | 7912 | 2162 | 27.325581% |
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 | 7913 | 7913 | 119 | 119 | 1.50% | 1.50% |  |
| B | 7911 | 7911 | 5962 | 5962 | 75.36% | 75.36% |  |
| C | 7912 | 7912 | 97 | 97 | 1.23% | 1.23% |  |
| D | 7912 | 7912 | 1869 | 1869 | 23.62% | 23.62% |  |
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 | 398239 | 1831.87 | 875 | 853 | 216.9 |
| A | 13 | 248 | 125173 | 573.09 | 875 | 853 | 216.9 |
| A | 11 | 3 | 85304 | 389.3 | 875 | 853 | 216.9 |
| B | 10 | 128 | 15883345 | 207299.22 | 352 | 341 | 76.6 |
| B | 2 | 249 | 600404 | 7831.81 | 352 | 341 | 76.6 |
| B | 10 | 247 | 76854 | 998.62 | 352 | 341 | 76.6 |
| C | 12 | 250 | 347813 | 1502.51 | 846 | 840 | 230.9 |
| C | 12 | 252 | 216319 | 933.1 | 846 | 840 | 230.9 |
| C | 15 | 208 | 67642 | 289.28 | 846 | 840 | 230.9 |
| D | 12 | 110 | 5413033 | 25265.55 | 756 | 724 | 214.2 |
| D | 8 | 240 | 882271 | 4115.21 | 756 | 724 | 214.2 |
| D | 5 | 32 | 109108 | 505.95 | 756 | 724 | 214.2 |
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 |  |