Observation information
- date-obs: 2026-07-16
- time-obs: 17:43:46.402100000
- date-end: 2026-07-16
- time-end: 19:47:59.374400000
- obs_id: A14_045T01_9000006590
- exposure: 6147.07155007
- 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_58437cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58437cztM0_level2_quad_clean.evt
|
| Size (bytes) | 379,350,720 | 94,055,040 |
| Size | 361.8 MB
| 89.7 MB
|
| Events in quadrant A | 3,701,059 | 601,605 |
| Events in quadrant B | 3,335,368 | 654,501 |
| Events in quadrant C | 3,094,865 | 591,044 |
| Events in quadrant D | 3,412,401 | 553,921 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 130 | 0 |
| B | 0 | 130 | 0 |
| C | 0 | 130 | 0 |
| D | 0 | 130 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15696 | 1 |
| B | 0 | 14526 | 1 |
| C | 0 | 13929 | 1 |
| D | 0 | 14660 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6403 | 172 | 2.686241% |
| B | 6404 | 158 | 2.467208% |
| C | 6404 | 43 | 0.671455% |
| D | 6404 | 77 | 1.202374% |
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 | 7453 | 6404 | 93 | 93 | 1.25% | 1.45% |  |
| B | 7454 | 6405 | 94 | 94 | 1.26% | 1.47% |  |
| C | 7454 | 6405 | 34 | 34 | 0.46% | 0.53% |  |
| D | 7454 | 6405 | 63 | 63 | 0.85% | 0.98% |  |
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 | 927913 | 5424.79 | 685 | 668 | 170.9 |
| A | 10 | 251 | 35745 | 205.22 | 685 | 668 | 170.9 |
| A | 3 | 245 | 20072 | 113.52 | 685 | 668 | 170.9 |
| B | 2 | 249 | 179427 | 1221.49 | 685 | 660 | 146.4 |
| B | 10 | 247 | 95968 | 651.23 | 685 | 660 | 146.4 |
| B | 5 | 185 | 71206 | 482.03 | 685 | 660 | 146.4 |
| C | 14 | 254 | 111167 | 595.33 | 673 | 670 | 185.6 |
| C | 14 | 245 | 92394 | 494.19 | 673 | 670 | 185.6 |
| C | 3 | 30 | 56324 | 299.85 | 673 | 670 | 185.6 |
| D | 8 | 240 | 481144 | 2499.57 | 668 | 638 | 192.2 |
| D | 11 | 129 | 77472 | 399.69 | 668 | 638 | 192.2 |
| D | 5 | 32 | 69022 | 355.73 | 668 | 638 | 192.2 |
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 |  |