Observation information
- date-obs: 2026-07-15
- time-obs: 19:07:46.580700000
- date-end: 2026-07-15
- time-end: 21:15:18.549800000
- obs_id: A14_045T01_9000006590
- exposure: 6278.59767163
- 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_58423cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58423cztM0_level2_quad_clean.evt
|
| Size (bytes) | 433,344,960 | 97,447,680 |
| Size | 413.3 MB
| 92.9 MB
|
| Events in quadrant A | 3,344,516 | 642,851 |
| Events in quadrant B | 3,920,807 | 688,691 |
| Events in quadrant C | 4,115,845 | 602,305 |
| Events in quadrant D | 4,151,382 | 560,583 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 132 | 0 |
| B | 0 | 132 | 0 |
| C | 0 | 132 | 0 |
| D | 0 | 132 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14612 | 2 |
| B | 0 | 15943 | 2 |
| C | 0 | 16854 | 2 |
| D | 0 | 16920 | 2 |
| 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 | 6542 | 57 | 0.871293% |
| B | 6541 | 98 | 1.498242% |
| C | 6542 | 205 | 3.133598% |
| D | 6542 | 257 | 3.928462% |
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 | 7652 | 6543 | 12 | 12 | 0.16% | 0.18% |  |
| B | 7651 | 6542 | 47 | 47 | 0.61% | 0.72% |  |
| C | 7652 | 6543 | 137 | 137 | 1.79% | 2.09% |  |
| D | 7652 | 6543 | 193 | 193 | 2.52% | 2.95% |  |
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 | 3 | 14 | 433070 | 2393.38 | 719 | 700 | 180.7 |
| A | 10 | 251 | 20497 | 109.59 | 719 | 700 | 180.7 |
| A | 13 | 248 | 20474 | 109.46 | 719 | 700 | 180.7 |
| B | 5 | 172 | 569834 | 3753.16 | 714 | 690 | 151.6 |
| B | 6 | 255 | 148398 | 974.04 | 714 | 690 | 151.6 |
| B | 0 | 153 | 79494 | 519.66 | 714 | 690 | 151.6 |
| C | 9 | 38 | 666339 | 3474.05 | 692 | 688 | 191.6 |
| C | 5 | 10 | 460237 | 2398.4 | 692 | 688 | 191.6 |
| C | 2 | 12 | 52752 | 271.72 | 692 | 688 | 191.6 |
| D | 8 | 240 | 885496 | 4537.23 | 682 | 654 | 195.0 |
| D | 2 | 249 | 166121 | 848.47 | 682 | 654 | 195.0 |
| D | 12 | 248 | 135434 | 691.12 | 682 | 654 | 195.0 |
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 |  |