Observation information
- date-obs: 2026-07-13
- time-obs: 01:13:39.965300000
- date-end: 2026-07-13
- time-end: 03:23:10.079400000
- obs_id: A14_045T01_9000006590
- exposure: 3932.0035482
- 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_58382cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58382cztM0_level2_quad_clean.evt
|
| Size (bytes) | 588,271,680 | 93,447,360 |
| Size | 561.0 MB
| 89.1 MB
|
| Events in quadrant A | 3,367,063 | 674,966 |
| Events in quadrant B | 10,677,098 | 448,930 |
| Events in quadrant C | 3,112,425 | 651,585 |
| Events in quadrant D | 4,107,846 | 595,036 |
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 | 14486 | 2 |
| B | 0 | 36206 | 2 |
| C | 0 | 13950 | 2 |
| D | 0 | 16857 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 12 | 0 |
| D | 0 | 12 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6581 | 119 | 1.808236% |
| B | 6582 | 2962 | 45.001519% |
| C | 6582 | 38 | 0.577332% |
| D | 6582 | 219 | 3.327256% |
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 | 7771 | 6581 | 36 | 36 | 0.46% | 0.55% |  |
| B | 7772 | 6582 | 2449 | 2449 | 31.51% | 37.21% |  |
| C | 7772 | 6583 | 9 | 9 | 0.12% | 0.14% |  |
| D | 7772 | 6583 | 177 | 177 | 2.28% | 2.69% |  |
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 | 112181 | 585.38 | 772 | 752 | 190.4 |
| A | 13 | 248 | 93870 | 489.19 | 772 | 752 | 190.4 |
| A | 2 | 143 | 56076 | 290.64 | 772 | 752 | 190.4 |
| B | 5 | 172 | 6881780 | 49938.52 | 645 | 622 | 137.8 |
| B | 8 | 128 | 620231 | 4496.68 | 645 | 622 | 137.8 |
| B | 2 | 249 | 139271 | 1006.22 | 645 | 622 | 137.8 |
| C | 1 | 16 | 57592 | 275.96 | 747 | 740 | 206.0 |
| C | 4 | 5 | 48354 | 231.12 | 747 | 740 | 206.0 |
| C | 14 | 245 | 30431 | 144.12 | 747 | 740 | 206.0 |
| D | 12 | 110 | 914813 | 4385.66 | 733 | 702 | 208.4 |
| D | 11 | 129 | 95121 | 453.0 | 733 | 702 | 208.4 |
| D | 2 | 249 | 63652 | 302.02 | 733 | 702 | 208.4 |
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 |  |