Observation information
- date-obs: 2026-07-17
- time-obs: 19:40:32.190500000
- date-end: 2026-07-17
- time-end: 21:44:58.167300000
- obs_id: A14_045T01_9000006590
- exposure: 5936.6874274
- 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_58453cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58453cztM0_level2_quad_clean.evt
|
| Size (bytes) | 381,772,800 | 95,158,080 |
| Size | 364.1 MB
| 90.7 MB
|
| Events in quadrant A | 2,871,701 | 633,279 |
| Events in quadrant B | 3,816,042 | 657,437 |
| Events in quadrant C | 3,095,110 | 597,394 |
| Events in quadrant D | 3,860,866 | 555,891 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 126 | 0 |
| B | 0 | 126 | 0 |
| C | 0 | 126 | 0 |
| D | 0 | 126 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13083 | 2 |
| B | 0 | 15651 | 2 |
| C | 0 | 13771 | 3 |
| D | 0 | 15844 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 13 | 0 |
| C | 0 | 13 | 0 |
| D | 0 | 13 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6271 | 24 | 0.382714% |
| B | 6271 | 314 | 5.007176% |
| C | 6270 | 95 | 1.515152% |
| D | 6270 | 115 | 1.834131% |
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 | 7461 | 6272 | 9 | 9 | 0.12% | 0.14% |  |
| B | 7461 | 6271 | 228 | 228 | 3.06% | 3.64% |  |
| C | 7460 | 6271 | 59 | 59 | 0.79% | 0.94% |  |
| D | 7460 | 6271 | 109 | 109 | 1.46% | 1.74% |  |
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 | 75852 | 431.06 | 701 | 684 | 174.4 |
| A | 3 | 14 | 23270 | 129.52 | 701 | 684 | 174.4 |
| A | 4 | 3 | 12104 | 65.49 | 701 | 684 | 174.4 |
| B | 5 | 172 | 610312 | 4174.2 | 685 | 662 | 146.1 |
| B | 5 | 185 | 138223 | 941.86 | 685 | 662 | 146.1 |
| B | 1 | 159 | 84993 | 577.4 | 685 | 662 | 146.1 |
| C | 1 | 12 | 161111 | 860.35 | 676 | 671 | 186.5 |
| C | 14 | 245 | 65882 | 349.69 | 676 | 671 | 186.5 |
| C | 4 | 5 | 51803 | 274.19 | 676 | 671 | 186.5 |
| D | 8 | 240 | 815892 | 4299.22 | 666 | 635 | 189.6 |
| D | 12 | 248 | 100243 | 525.28 | 666 | 635 | 189.6 |
| D | 2 | 153 | 83266 | 435.75 | 666 | 635 | 189.6 |
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 |  |