Observation information
- date-obs: 2026-06-27
- time-obs: 15:47:16.248000000
- date-end: 2026-06-27
- time-end: 18:03:32.226200000
- obs_id: A14_042T02_9000006586
- exposure: 2435.69773823
- 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_58153cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58153cztM0_level2_quad_clean.evt
|
| Size (bytes) | 767,615,040 | 98,179,200 |
| Size | 732.1 MB
| 93.6 MB
|
| Events in quadrant A | 3,545,888 | 766,670 |
| Events in quadrant B | 15,801,024 | 260,380 |
| Events in quadrant C | 4,199,143 | 723,762 |
| Events in quadrant D | 4,263,024 | 680,560 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 4 | 0 |
| B | 0 | 5 | 0 |
| C | 0 | 5 | 0 |
| D | 0 | 5 | 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 | 16315 | 2 |
| B | 0 | 52333 | 2 |
| C | 0 | 18134 | 3 |
| D | 0 | 18124 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7793 | 43 | 0.551777% |
| B | 7793 | 5503 | 70.614654% |
| C | 7792 | 72 | 0.924025% |
| D | 7792 | 118 | 1.514374% |
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 | 7823 | 7794 | 6 | 6 | 0.08% | 0.08% |  |
| B | 7822 | 7792 | 5068 | 5068 | 64.79% | 65.04% |  |
| C | 7822 | 7793 | 57 | 57 | 0.73% | 0.73% |  |
| D | 7822 | 7792 | 91 | 91 | 1.16% | 1.17% |  |
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 | 13 | 248 | 42505 | 189.21 | 889 | 866 | 220.1 |
| A | 4 | 3 | 19186 | 83.25 | 889 | 866 | 220.1 |
| A | 2 | 143 | 14642 | 62.6 | 889 | 866 | 220.1 |
| B | 10 | 128 | 13241163 | 137983.13 | 442 | 425 | 96.0 |
| B | 2 | 249 | 458845 | 4777.24 | 442 | 425 | 96.0 |
| B | 4 | 201 | 107111 | 1111.79 | 442 | 425 | 96.0 |
| C | 12 | 252 | 415311 | 1763.79 | 854 | 844 | 235.0 |
| C | 9 | 38 | 165508 | 700.74 | 854 | 844 | 235.0 |
| C | 12 | 254 | 126514 | 534.8 | 854 | 844 | 235.0 |
| D | 8 | 240 | 270376 | 1129.7 | 853 | 817 | 238.6 |
| D | 6 | 239 | 102787 | 427.35 | 853 | 817 | 238.6 |
| D | 12 | 110 | 98333 | 408.68 | 853 | 817 | 238.6 |
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 |  |