Observation information
- date-obs: 2026-07-17
- time-obs: 09:26:52.273800000
- date-end: 2026-07-17
- time-end: 14:53:16.231100000
- obs_id: A14_045T01_9000006590
- exposure: 17751.4553337
- 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_58448cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58448cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,201,469,760 | 264,427,200 |
| Size | 1.1 GB
| 252.2 MB
|
| Events in quadrant A | 8,986,200 | 1,741,904 |
| Events in quadrant B | 11,011,896 | 1,823,646 |
| Events in quadrant C | 10,557,077 | 1,635,120 |
| Events in quadrant D | 12,472,836 | 1,518,007 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 378 | 0 |
| B | 0 | 378 | 0 |
| C | 0 | 378 | 0 |
| D | 0 | 378 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 40229 | 2 |
| B | 0 | 45601 | 2 |
| C | 0 | 45059 | 2 |
| D | 0 | 49666 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 9 | 0 |
| B | 0 | 9 | 0 |
| C | 0 | 9 | 0 |
| D | 0 | 9 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 18679 | 325 | 1.739922% |
| B | 18679 | 823 | 4.406017% |
| C | 18679 | 580 | 3.105091% |
| D | 18679 | 896 | 4.796831% |
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 | 19584 | 18680 | 67 | 67 | 0.34% | 0.36% |  |
| B | 19584 | 18680 | 371 | 371 | 1.89% | 1.99% |  |
| C | 19584 | 18681 | 414 | 414 | 2.11% | 2.22% |  |
| D | 19584 | 18680 | 752 | 752 | 3.84% | 4.03% |  |
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 | 245402 | 473.94 | 2072 | 2014 | 513.5 |
| A | 3 | 14 | 159215 | 306.11 | 2072 | 2014 | 513.5 |
| A | 10 | 248 | 122831 | 235.26 | 2072 | 2014 | 513.5 |
| B | 5 | 172 | 1063941 | 2446.77 | 2030 | 1953 | 434.0 |
| B | 8 | 128 | 405634 | 930.06 | 2030 | 1953 | 434.0 |
| B | 4 | 201 | 313354 | 717.45 | 2030 | 1953 | 434.0 |
| C | 5 | 10 | 1042213 | 1898.81 | 1994 | 1977 | 547.8 |
| C | 15 | 217 | 723110 | 1316.33 | 1994 | 1977 | 547.8 |
| C | 14 | 245 | 348549 | 632.62 | 1994 | 1977 | 547.8 |
| D | 8 | 240 | 2559821 | 4551.71 | 1980 | 1892 | 562.0 |
| D | 2 | 249 | 399857 | 708.16 | 1980 | 1892 | 562.0 |
| D | 3 | 12 | 281514 | 497.57 | 1980 | 1892 | 562.0 |
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 |  |