Observation information
- date-obs: 2026-06-26
- time-obs: 06:50:36.581200000
- date-end: 2026-06-26
- time-end: 09:05:57.557100000
- obs_id: A14_042T02_9000006586
- exposure: 5655.3341819
- 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_58133cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58133cztM0_level2_quad_clean.evt
|
| Size (bytes) | 498,850,560 | 97,643,520 |
| Size | 475.7 MB
| 93.1 MB
|
| Events in quadrant A | 3,349,013 | 666,545 |
| Events in quadrant B | 5,783,853 | 634,431 |
| Events in quadrant C | 3,314,536 | 633,986 |
| Events in quadrant D | 5,513,436 | 568,322 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16 | 0 |
| B | 0 | 17 | 0 |
| C | 0 | 17 | 0 |
| D | 0 | 17 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 132 | 0 |
| B | 0 | 132 | 0 |
| C | 0 | 132 | 0 |
| D | 0 | 132 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14129 | 2 |
| B | 0 | 21511 | 2 |
| C | 0 | 14354 | 2 |
| D | 0 | 20765 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6500 | 139 | 2.138462% |
| B | 6500 | 915 | 14.076923% |
| C | 6500 | 119 | 1.830769% |
| D | 6500 | 502 | 7.723077% |
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 | 7595 | 6501 | 26 | 26 | 0.34% | 0.40% |  |
| B | 7595 | 6501 | 579 | 579 | 7.62% | 8.91% |  |
| C | 7595 | 6501 | 29 | 29 | 0.38% | 0.45% |  |
| D | 7595 | 6501 | 429 | 429 | 5.65% | 6.60% |  |
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 | 11 | 3 | 188176 | 1001.83 | 758 | 739 | 187.1 |
| A | 10 | 251 | 143797 | 764.63 | 758 | 739 | 187.1 |
| A | 3 | 245 | 33533 | 175.28 | 758 | 739 | 187.1 |
| B | 10 | 128 | 2703133 | 17770.07 | 710 | 684 | 152.1 |
| B | 5 | 185 | 58581 | 380.7 | 710 | 684 | 152.1 |
| B | 5 | 172 | 37889 | 244.64 | 710 | 684 | 152.1 |
| C | 12 | 252 | 263051 | 1314.31 | 733 | 726 | 199.6 |
| C | 13 | 3 | 87292 | 433.72 | 733 | 726 | 199.6 |
| C | 6 | 223 | 49517 | 244.46 | 733 | 726 | 199.6 |
| D | 8 | 160 | 916310 | 4495.99 | 718 | 686 | 203.7 |
| D | 12 | 110 | 753966 | 3698.83 | 718 | 686 | 203.7 |
| D | 2 | 249 | 517938 | 2539.86 | 718 | 686 | 203.7 |
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 |  |