Observation information
- date-obs: 2026-07-12
- time-obs: 23:13:53.112900000
- date-end: 2026-07-13
- time-end: 01:40:30.078900000
- obs_id: A14_045T01_9000006590
- exposure: 6228.86000967
- 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_58381cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58381cztM0_level2_quad_clean.evt
|
| Size (bytes) | 420,477,120 | 101,669,760 |
| Size | 401.0 MB
| 97.0 MB
|
| Events in quadrant A | 3,113,278 | 680,813 |
| Events in quadrant B | 4,605,324 | 713,686 |
| Events in quadrant C | 4,100,473 | 622,019 |
| Events in quadrant D | 3,234,491 | 603,812 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 134 | 0 |
| B | 0 | 134 | 0 |
| C | 0 | 134 | 0 |
| D | 0 | 134 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13800 | 2 |
| B | 0 | 18119 | 2 |
| C | 0 | 16838 | 2 |
| D | 0 | 14119 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 21 | 0 |
| B | 0 | 22 | 0 |
| C | 0 | 22 | 0 |
| D | 0 | 22 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6572 | 40 | 0.608643% |
| B | 6572 | 329 | 5.006086% |
| C | 6572 | 302 | 4.595253% |
| D | 6572 | 35 | 0.532562% |
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 | 7812 | 6573 | 8 | 8 | 0.10% | 0.12% |  |
| B | 7812 | 6572 | 114 | 114 | 1.46% | 1.73% |  |
| C | 7812 | 6573 | 322 | 322 | 4.12% | 4.90% |  |
| D | 7812 | 6573 | 26 | 26 | 0.33% | 0.40% |  |
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 | 10 | 251 | 36106 | 188.35 | 757 | 737 | 187.8 |
| A | 2 | 143 | 35395 | 184.56 | 757 | 737 | 187.8 |
| A | 12 | 114 | 35144 | 183.23 | 757 | 737 | 187.8 |
| B | 5 | 172 | 789980 | 5003.55 | 742 | 716 | 157.7 |
| B | 0 | 157 | 140839 | 888.31 | 742 | 716 | 157.7 |
| B | 6 | 255 | 128611 | 810.79 | 742 | 716 | 157.7 |
| C | 6 | 223 | 1113294 | 5608.18 | 719 | 714 | 198.4 |
| C | 4 | 5 | 46875 | 232.68 | 719 | 714 | 198.4 |
| C | 1 | 16 | 29199 | 143.58 | 719 | 714 | 198.4 |
| D | 11 | 129 | 206198 | 1005.05 | 722 | 689 | 204.5 |
| D | 2 | 153 | 74236 | 359.68 | 722 | 689 | 204.5 |
| D | 5 | 173 | 42254 | 203.28 | 722 | 689 | 204.5 |
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 |  |