Observation information
- date-obs: 2026-06-28
- time-obs: 16:07:16.032600000
- date-end: 2026-06-28
- time-end: 18:19:11.981700000
- obs_id: A14_042T02_9000006586
- exposure: 1428.06012863
- 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_58168cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58168cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,142,596,800 | 84,326,400 |
| Size | 1.1 GB
| 80.4 MB
|
| Events in quadrant A | 3,624,692 | 774,076 |
| Events in quadrant B | 18,285,158 | 142,257 |
| Events in quadrant C | 3,782,693 | 733,886 |
| Events in quadrant D | 15,991,963 | 352,967 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 1 | 140687739910184 | 140685948747822 |
| B | 1 | -1 | -1 |
| C | 1 | -1 | -1 |
| D | 1 | -1 | -1 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 158 | 0 |
| B | 0 | 158 | 0 |
| C | 0 | 158 | 0 |
| D | 0 | 158 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16562 | 1 |
| B | 0 | 59799 | 8 |
| C | 0 | 17168 | 1 |
| D | 0 | 52969 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7907 | 53 | 0.670292% |
| B | 7906 | 6652 | 84.138629% |
| C | 7906 | 71 | 0.898052% |
| D | 7906 | 4271 | 54.022262% |
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 | 7906 | 7906 | 1 | 1 | 0.01% | 0.01% |  |
| B | 7905 | 7905 | 6330 | 6330 | 80.08% | 80.08% |  |
| C | 7905 | 7905 | 53 | 53 | 0.67% | 0.67% |  |
| D | 7905 | 7905 | 4748 | 4748 | 60.06% | 60.06% |  |
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 | 2 | 143 | 57212 | 255.32 | 901 | 879 | 220.6 |
| A | 4 | 3 | 37930 | 167.93 | 901 | 879 | 220.6 |
| A | 13 | 254 | 13302 | 56.31 | 901 | 879 | 220.6 |
| B | 10 | 128 | 15774209 | 187263.23 | 385 | 371 | 84.2 |
| B | 2 | 249 | 727071 | 8627.21 | 385 | 371 | 84.2 |
| B | 10 | 247 | 108411 | 1282.63 | 385 | 371 | 84.2 |
| C | 6 | 223 | 208349 | 879.11 | 866 | 860 | 236.0 |
| C | 12 | 252 | 70117 | 293.44 | 866 | 860 | 236.0 |
| C | 15 | 208 | 34197 | 141.25 | 866 | 860 | 236.0 |
| D | 12 | 110 | 11357605 | 55719.35 | 724 | 694 | 203.8 |
| D | 8 | 160 | 1195956 | 5864.2 | 724 | 694 | 203.8 |
| D | 3 | 12 | 116356 | 567.46 | 724 | 694 | 203.8 |
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 |  |