Observation information
- date-obs: 2026-06-27
- time-obs: 12:31:58.279800000
- date-end: 2026-06-27
- time-end: 14:36:29.255000000
- obs_id: A14_042T02_9000006586
- exposure: 863.088143528
- 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_58151cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58151cztM0_level2_quad_clean.evt
|
| Size (bytes) | 776,229,120 | 76,783,680 |
| Size | 740.3 MB
| 73.2 MB
|
| Events in quadrant A | 2,995,354 | 648,970 |
| Events in quadrant B | 15,667,853 | 93,766 |
| Events in quadrant C | 3,521,390 | 614,398 |
| Events in quadrant D | 6,041,124 | 511,993 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 9 | 0 |
| B | 0 | 9 | 0 |
| C | 0 | 9 | 0 |
| D | 0 | 9 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 134 | 0 |
| B | 0 | 134 | 0 |
| C | 0 | 134 | 0 |
| D | 0 | 134 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13692 | 1 |
| B | 0 | 51079 | 8 |
| C | 0 | 15055 | 1 |
| D | 0 | 22340 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6531 | 123 | 1.883326% |
| B | 6531 | 5819 | 89.098147% |
| C | 6531 | 153 | 2.342673% |
| D | 6531 | 914 | 13.994794% |
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 | 7471 | 6531 | 3 | 3 | 0.04% | 0.05% |  |
| B | 7470 | 6530 | 5413 | 5413 | 72.46% | 82.89% |  |
| C | 7471 | 6531 | 47 | 47 | 0.63% | 0.72% |  |
| D | 7471 | 6531 | 796 | 796 | 10.65% | 12.19% |  |
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 | 39999 | 211.78 | 750 | 730 | 185.4 |
| A | 13 | 248 | 21774 | 113.49 | 750 | 730 | 185.4 |
| A | 2 | 143 | 16494 | 85.02 | 750 | 730 | 185.4 |
| B | 10 | 128 | 14001550 | 227492.86 | 282 | 274 | 61.5 |
| B | 2 | 249 | 323634 | 5253.96 | 282 | 274 | 61.5 |
| B | 4 | 201 | 57635 | 932.0 | 282 | 274 | 61.5 |
| C | 12 | 252 | 564132 | 2851.65 | 718 | 710 | 197.6 |
| C | 12 | 254 | 94622 | 475.32 | 718 | 710 | 197.6 |
| C | 6 | 223 | 36591 | 181.6 | 718 | 710 | 197.6 |
| D | 12 | 110 | 2607740 | 13510.25 | 683 | 655 | 193.0 |
| D | 8 | 240 | 159149 | 821.34 | 683 | 655 | 193.0 |
| D | 7 | 222 | 143280 | 739.1 | 683 | 655 | 193.0 |
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 |  |