Observation information
- date-obs: 2026-07-16
- time-obs: 03:23:05.513100000
- date-end: 2026-07-16
- time-end: 05:53:14.493400000
- obs_id: A14_045T01_9000006590
- exposure: 6829.70074886
- 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_58428cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58428cztM0_level2_quad_clean.evt
|
| Size (bytes) | 470,016,000 | 106,266,240 |
| Size | 448.2 MB
| 101.3 MB
|
| Events in quadrant A | 3,686,908 | 690,264 |
| Events in quadrant B | 4,435,297 | 730,376 |
| Events in quadrant C | 4,231,706 | 665,500 |
| Events in quadrant D | 4,474,083 | 621,285 |
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 | 16250 | 2 |
| B | 0 | 18015 | 2 |
| C | 0 | 17809 | 2 |
| D | 0 | 18490 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17 | 0 |
| B | 0 | 17 | 0 |
| C | 0 | 17 | 0 |
| D | 0 | 17 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7335 | 274 | 3.735515% |
| B | 7334 | 468 | 6.381238% |
| C | 7334 | 335 | 4.567767% |
| D | 7334 | 346 | 4.717753% |
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 | 9010 | 7338 | 13 | 13 | 0.14% | 0.18% |  |
| B | 9009 | 7337 | 123 | 123 | 1.37% | 1.68% |  |
| C | 9009 | 7337 | 137 | 137 | 1.52% | 1.87% |  |
| D | 9009 | 7337 | 151 | 151 | 1.68% | 2.06% |  |
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 | 12 | 114 | 171898 | 813.39 | 856 | 832 | 210.3 |
| A | 7 | 64 | 58664 | 274.98 | 856 | 832 | 210.3 |
| A | 2 | 143 | 53125 | 248.64 | 856 | 832 | 210.3 |
| B | 10 | 247 | 359865 | 1983.7 | 837 | 805 | 181.0 |
| B | 5 | 172 | 253631 | 1396.79 | 837 | 805 | 181.0 |
| B | 6 | 255 | 165078 | 907.56 | 837 | 805 | 181.0 |
| C | 5 | 10 | 441547 | 1947.27 | 827 | 821 | 226.3 |
| C | 12 | 252 | 287685 | 1267.46 | 827 | 821 | 226.3 |
| C | 4 | 5 | 87665 | 383.71 | 827 | 821 | 226.3 |
| D | 8 | 240 | 850853 | 3635.75 | 826 | 789 | 233.8 |
| D | 12 | 248 | 130836 | 556.21 | 826 | 789 | 233.8 |
| D | 2 | 252 | 88736 | 376.15 | 826 | 789 | 233.8 |
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 |  |