Observation information
- date-obs: 2026-07-15
- time-obs: 22:18:52.554900000
- date-end: 2026-07-16
- time-end: 00:46:02.534200000
- obs_id: A14_045T01_9000006590
- exposure: 6321.39161521
- 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_58425cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58425cztM0_level2_quad_clean.evt
|
| Size (bytes) | 422,055,360 | 102,202,560 |
| Size | 402.5 MB
| 97.5 MB
|
| Events in quadrant A | 3,358,338 | 674,954 |
| Events in quadrant B | 4,338,158 | 719,218 |
| Events in quadrant C | 3,567,679 | 643,697 |
| Events in quadrant D | 3,846,022 | 596,991 |
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 | 14469 | 2 |
| B | 0 | 17258 | 2 |
| C | 0 | 15119 | 2 |
| D | 0 | 16103 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 22 | 0 |
| B | 0 | 23 | 0 |
| C | 0 | 23 | 0 |
| D | 0 | 23 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6597 | 99 | 1.500682% |
| B | 6597 | 241 | 3.653176% |
| C | 6596 | 99 | 1.500910% |
| D | 6596 | 138 | 2.092177% |
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 | 7827 | 6598 | 55 | 55 | 0.70% | 0.83% |  |
| B | 7827 | 6598 | 155 | 155 | 1.98% | 2.35% |  |
| C | 7826 | 6597 | 56 | 56 | 0.72% | 0.85% |  |
| D | 7826 | 6597 | 113 | 113 | 1.44% | 1.71% |  |
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 | 112 | 294494 | 1591.15 | 753 | 737 | 184.6 |
| A | 10 | 251 | 43086 | 229.39 | 753 | 737 | 184.6 |
| A | 3 | 14 | 29876 | 157.83 | 753 | 737 | 184.6 |
| B | 5 | 172 | 607034 | 3794.28 | 743 | 713 | 159.8 |
| B | 4 | 201 | 274998 | 1716.44 | 743 | 713 | 159.8 |
| B | 4 | 171 | 187503 | 1168.91 | 743 | 713 | 159.8 |
| C | 6 | 223 | 147431 | 731.77 | 729 | 725 | 200.5 |
| C | 1 | 16 | 123664 | 613.22 | 729 | 725 | 200.5 |
| C | 12 | 252 | 118241 | 586.17 | 729 | 725 | 200.5 |
| D | 8 | 240 | 319314 | 1557.18 | 716 | 684 | 204.6 |
| D | 2 | 120 | 231976 | 1130.35 | 716 | 684 | 204.6 |
| D | 7 | 222 | 213797 | 1041.51 | 716 | 684 | 204.6 |
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 |  |