Observation information
- date-obs: 2026-07-17
- time-obs: 02:02:12.330900000
- date-end: 2026-07-17
- time-end: 04:26:04.312600000
- obs_id: A14_045T01_9000006590
- exposure: 6447.88280392
- 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_58442cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58442cztM0_level2_quad_clean.evt
|
| Size (bytes) | 429,505,920 | 99,982,080 |
| Size | 409.6 MB
| 95.4 MB
|
| Events in quadrant A | 3,451,574 | 652,352 |
| Events in quadrant B | 3,684,146 | 697,838 |
| Events in quadrant C | 4,292,462 | 616,580 |
| Events in quadrant D | 3,941,948 | 587,025 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 138 | 0 |
| B | 0 | 138 | 0 |
| C | 0 | 138 | 0 |
| D | 0 | 138 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15120 | 2 |
| B | 0 | 15618 | 2 |
| C | 0 | 17595 | 2 |
| D | 0 | 16536 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 18 | 0 |
| B | 0 | 19 | 0 |
| C | 0 | 19 | 0 |
| D | 0 | 19 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6797 | 178 | 2.618802% |
| B | 6797 | 287 | 4.222451% |
| C | 6797 | 354 | 5.208180% |
| D | 6797 | 182 | 2.677652% |
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 | 7707 | 6797 | 46 | 46 | 0.60% | 0.68% |  |
| B | 7707 | 6798 | 57 | 57 | 0.74% | 0.84% |  |
| C | 7707 | 6797 | 245 | 245 | 3.18% | 3.60% |  |
| D | 7707 | 6798 | 100 | 100 | 1.30% | 1.47% |  |
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 | 284760 | 1470.89 | 784 | 764 | 193.1 |
| A | 7 | 64 | 27979 | 140.95 | 784 | 764 | 193.1 |
| A | 3 | 245 | 24287 | 121.83 | 784 | 764 | 193.1 |
| B | 5 | 172 | 433366 | 2600.81 | 773 | 745 | 166.3 |
| B | 2 | 249 | 39297 | 231.76 | 773 | 745 | 166.3 |
| B | 0 | 186 | 22833 | 132.79 | 773 | 745 | 166.3 |
| C | 5 | 10 | 411596 | 2002.71 | 746 | 741 | 205.1 |
| C | 1 | 12 | 394989 | 1921.76 | 746 | 741 | 205.1 |
| C | 6 | 223 | 136019 | 659.41 | 746 | 741 | 205.1 |
| D | 8 | 240 | 292150 | 1363.87 | 751 | 716 | 213.7 |
| D | 2 | 249 | 138784 | 646.14 | 751 | 716 | 213.7 |
| D | 9 | 49 | 136306 | 634.54 | 751 | 716 | 213.7 |
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 |  |