Observation information
- date-obs: 2026-07-12
- time-obs: 11:24:14.203900000
- date-end: 2026-07-12
- time-end: 13:31:25.189600000
- obs_id: A14_045T01_9000006590
- exposure: 7030.23519504
- sourceid: NGC 4383
- observer: ujjwalkrishnan
- ra_pnt: 186.3563
- dec_pnt: 16.47013
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_045T01_9000006590_58373cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58373cztM0_level2_quad_clean.evt
|
| Size (bytes) | 510,834,240 | 110,108,160 |
| Size | 487.2 MB
| 105.0 MB
|
| Events in quadrant A | 4,018,365 | 725,877 |
| Events in quadrant B | 5,594,760 | 730,517 |
| Events in quadrant C | 4,389,816 | 691,585 |
| Events in quadrant D | 4,313,679 | 654,982 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 152 | 0 |
| B | 0 | 152 | 0 |
| C | 0 | 152 | 0 |
| D | 0 | 152 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17252 | 0 |
| B | 0 | 21874 | 0 |
| C | 0 | 18369 | 0 |
| D | 0 | 17692 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7631 | 105 | 1.375966% |
| B | 7632 | 661 | 8.660901% |
| C | 7632 | 154 | 2.017820% |
| D | 7632 | 58 | 0.759958% |
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 | 7631 | 7631 | 80 | 80 | 1.05% | 1.05% |  |
| B | 7631 | 7631 | 402 | 402 | 5.27% | 5.27% |  |
| C | 7632 | 7632 | 150 | 150 | 1.97% | 1.97% |  |
| D | 7632 | 7632 | 53 | 53 | 0.69% | 0.69% |  |
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 | 12 | 80 | 273079 | 1278.21 | 855 | 832 | 213.0 |
| A | 4 | 249 | 119668 | 557.94 | 855 | 832 | 213.0 |
| A | 13 | 248 | 87697 | 407.83 | 855 | 832 | 213.0 |
| B | 2 | 249 | 1397821 | 7853.05 | 820 | 788 | 177.9 |
| B | 10 | 128 | 215889 | 1209.13 | 820 | 788 | 177.9 |
| B | 10 | 247 | 115009 | 642.06 | 820 | 788 | 177.9 |
| C | 15 | 148 | 363529 | 1592.21 | 824 | 818 | 227.8 |
| C | 13 | 16 | 283288 | 1239.97 | 824 | 818 | 227.8 |
| C | 6 | 223 | 125783 | 548.56 | 824 | 818 | 227.8 |
| D | 11 | 129 | 318938 | 1336.84 | 831 | 793 | 238.0 |
| D | 12 | 128 | 179801 | 752.19 | 831 | 793 | 238.0 |
| D | 3 | 12 | 129054 | 538.95 | 831 | 793 | 238.0 |
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 |  |