Observation information
- date-obs: 2026-07-18
- time-obs: 00:54:17.146200000
- date-end: 2026-07-18
- time-end: 02:58:23.129600000
- obs_id: A14_045T01_9000006590
- exposure: 5755.32405859
- 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_58456cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58456cztM0_level2_quad_clean.evt
|
| Size (bytes) | 427,901,760 | 92,894,400 |
| Size | 408.1 MB
| 88.6 MB
|
| Events in quadrant A | 3,913,284 | 574,210 |
| Events in quadrant B | 4,174,437 | 658,661 |
| Events in quadrant C | 2,889,900 | 603,441 |
| Events in quadrant D | 4,368,659 | 534,495 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 128 | 0 |
| B | 0 | 128 | 0 |
| C | 0 | 128 | 0 |
| D | 0 | 128 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16132 | 1 |
| B | 0 | 16589 | 1 |
| C | 0 | 13228 | 1 |
| D | 0 | 17492 | 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 | 6336 | 546 | 8.617424% |
| B | 6336 | 305 | 4.813763% |
| C | 6337 | 17 | 0.268266% |
| D | 6336 | 393 | 6.202652% |
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 | 7446 | 6336 | 368 | 368 | 4.94% | 5.81% |  |
| B | 7446 | 6336 | 177 | 177 | 2.38% | 2.79% |  |
| C | 7447 | 6338 | 2 | 2 | 0.03% | 0.03% |  |
| D | 7446 | 6336 | 332 | 332 | 4.46% | 5.24% |  |
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 | 1125306 | 6635.25 | 683 | 664 | 169.5 |
| A | 12 | 114 | 49557 | 288.46 | 683 | 664 | 169.5 |
| A | 3 | 245 | 39467 | 228.93 | 683 | 664 | 169.5 |
| B | 5 | 172 | 556890 | 3650.69 | 705 | 680 | 152.4 |
| B | 2 | 249 | 383270 | 2511.13 | 705 | 680 | 152.4 |
| B | 8 | 128 | 121319 | 791.82 | 705 | 680 | 152.4 |
| C | 13 | 3 | 41841 | 215.47 | 695 | 691 | 191.0 |
| C | 6 | 223 | 30810 | 157.71 | 695 | 691 | 191.0 |
| C | 14 | 254 | 30522 | 156.2 | 695 | 691 | 191.0 |
| D | 8 | 240 | 1217992 | 6360.21 | 668 | 638 | 191.4 |
| D | 6 | 239 | 278576 | 1452.12 | 668 | 638 | 191.4 |
| D | 5 | 173 | 46605 | 240.16 | 668 | 638 | 191.4 |
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 |  |