Observation information
- date-obs: 2026-06-30
- time-obs: 15:14:54.520000000
- date-end: 2026-07-01
- time-end: 01:50:20.412100000
- obs_id: A14_042T02_9000006586
- exposure: 33229.3732952
- 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_58202cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58202cztM0_level2_quad_clean.evt
|
| Size (bytes) | 2,629,419,840 | 510,292,800 |
| Size | 2.4 GB
| 486.7 MB
|
| Events in quadrant A | 19,371,230 | 3,340,191 |
| Events in quadrant B | 31,296,283 | 3,458,202 |
| Events in quadrant C | 16,062,146 | 3,285,117 |
| Events in quadrant D | 27,813,021 | 2,886,416 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 21 | 0 |
| B | 0 | 21 | 0 |
| C | 0 | 21 | 0 |
| D | 0 | 21 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 728 | 0 |
| B | 0 | 728 | 0 |
| C | 0 | 728 | 0 |
| D | 0 | 728 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 84535 | 4 |
| B | 0 | 117702 | 4 |
| C | 0 | 75124 | 4 |
| D | 0 | 108163 | 6 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 36111 | 1495 | 4.140013% |
| B | 36112 | 3114 | 8.623172% |
| C | 36112 | 88 | 0.243686% |
| D | 36111 | 3055 | 8.460026% |
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 | 38126 | 36115 | 1274 | 1274 | 3.34% | 3.53% |  |
| B | 38127 | 36116 | 2106 | 2106 | 5.52% | 5.83% |  |
| C | 38127 | 36116 | 31 | 31 | 0.08% | 0.09% |  |
| D | 38126 | 36115 | 2761 | 2761 | 7.24% | 7.65% |  |
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 | 7 | 64 | 3868840 | 3990.6 | 3894 | 3789 | 968.5 |
| A | 13 | 248 | 185647 | 187.76 | 3894 | 3789 | 968.5 |
| A | 4 | 3 | 120775 | 120.79 | 3894 | 3789 | 968.5 |
| B | 10 | 128 | 10532220 | 13183.63 | 3786 | 3639 | 798.6 |
| B | 2 | 249 | 3406494 | 4260.97 | 3786 | 3639 | 798.6 |
| B | 5 | 185 | 395584 | 490.78 | 3786 | 3639 | 798.6 |
| C | 12 | 252 | 493155 | 468.81 | 3832 | 3795 | 1043.8 |
| C | 6 | 223 | 227011 | 213.84 | 3832 | 3795 | 1043.8 |
| C | 11 | 244 | 99621 | 91.8 | 3832 | 3795 | 1043.8 |
| D | 12 | 110 | 6692606 | 6385.83 | 3703 | 3544 | 1047.5 |
| D | 8 | 160 | 2052120 | 1955.71 | 3703 | 3544 | 1047.5 |
| D | 7 | 222 | 1136413 | 1081.51 | 3703 | 3544 | 1047.5 |
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 |  |