Observation information
- date-obs: 2026-06-27
- time-obs: 21:07:45.197100000
- date-end: 2026-06-28
- time-end: 02:46:07.138700000
- obs_id: A14_042T02_9000006586
- exposure: 9742.17305714
- 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_58158cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58158cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,676,698,560 | 238,708,800 |
| Size | 1.6 GB
| 227.7 MB
|
| Events in quadrant A | 8,078,995 | 1,760,231 |
| Events in quadrant B | 33,427,666 | 956,448 |
| Events in quadrant C | 9,284,047 | 1,660,481 |
| Events in quadrant D | 9,827,528 | 1,561,018 |
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 | 380 | 0 |
| B | 0 | 380 | 0 |
| C | 0 | 380 | 0 |
| D | 0 | 380 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 38065 | 4 |
| B | 0 | 112364 | 3 |
| C | 0 | 41155 | 3 |
| D | 0 | 42774 | 3 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 18701 | 62 | 0.331533% |
| B | 18701 | 9805 | 52.430351% |
| C | 18701 | 147 | 0.786054% |
| D | 18701 | 267 | 1.427731% |
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 | 20302 | 18705 | 11 | 11 | 0.05% | 0.06% |  |
| B | 20301 | 18700 | 8792 | 8792 | 43.31% | 47.02% |  |
| C | 20302 | 18705 | 111 | 111 | 0.55% | 0.59% |  |
| D | 20302 | 18705 | 252 | 252 | 1.24% | 1.35% |  |
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 | 14 | 90793 | 177.75 | 2036 | 1983 | 499.6 |
| A | 3 | 245 | 39715 | 75.52 | 2036 | 1983 | 499.6 |
| A | 13 | 254 | 30309 | 56.69 | 2036 | 1983 | 499.6 |
| B | 10 | 128 | 26739830 | 86428.28 | 1441 | 1382 | 309.4 |
| B | 10 | 247 | 244421 | 785.59 | 1441 | 1382 | 309.4 |
| B | 5 | 185 | 174636 | 560.02 | 1441 | 1382 | 309.4 |
| C | 12 | 252 | 687538 | 1261.77 | 1972 | 1948 | 543.4 |
| C | 12 | 254 | 546321 | 1001.87 | 1972 | 1948 | 543.4 |
| C | 14 | 96 | 146284 | 265.64 | 1972 | 1948 | 543.4 |
| D | 8 | 240 | 528638 | 960.37 | 1953 | 1869 | 548.5 |
| D | 12 | 218 | 322939 | 585.35 | 1953 | 1869 | 548.5 |
| D | 2 | 249 | 315523 | 571.83 | 1953 | 1869 | 548.5 |
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 |  |