Observation information
- date-obs: 2026-07-13
- time-obs: 23:42:12.921700000
- date-end: 2026-07-14
- time-end: 01:54:26.902100000
- obs_id: A14_045T01_9000006590
- exposure: 5303.21984178
- 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_58396cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58396cztM0_level2_quad_clean.evt
|
| Size (bytes) | 590,140,800 | 96,194,880 |
| Size | 562.8 MB
| 91.7 MB
|
| Events in quadrant A | 4,492,604 | 652,253 |
| Events in quadrant B | 3,921,994 | 709,243 |
| Events in quadrant C | 7,318,072 | 529,524 |
| Events in quadrant D | 5,612,552 | 571,308 |
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 | 17522 | 2 |
| B | 0 | 15699 | 2 |
| C | 0 | 26095 | 2 |
| D | 0 | 21279 | 3 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14 | 0 |
| B | 0 | 15 | 0 |
| C | 0 | 15 | 0 |
| D | 0 | 15 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6453 | 260 | 4.029134% |
| B | 6453 | 256 | 3.967147% |
| C | 6453 | 1335 | 20.688052% |
| D | 6452 | 330 | 5.114693% |
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 | 7678 | 6454 | 195 | 195 | 2.54% | 3.02% |  |
| B | 7678 | 6454 | 140 | 140 | 1.82% | 2.17% |  |
| C | 7678 | 6454 | 1145 | 1145 | 14.91% | 17.74% |  |
| D | 7677 | 6453 | 259 | 259 | 3.37% | 4.01% |  |
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 | 7 | 64 | 748568 | 4059.08 | 743 | 724 | 184.2 |
| A | 12 | 114 | 572972 | 3106.0 | 743 | 724 | 184.2 |
| A | 10 | 251 | 102630 | 553.12 | 743 | 724 | 184.2 |
| B | 6 | 255 | 519482 | 3236.19 | 741 | 713 | 160.3 |
| B | 5 | 185 | 86718 | 536.52 | 741 | 713 | 160.3 |
| B | 10 | 247 | 72328 | 446.75 | 741 | 713 | 160.3 |
| C | 9 | 38 | 3600148 | 19228.3 | 675 | 667 | 187.2 |
| C | 5 | 10 | 712865 | 3804.54 | 675 | 667 | 187.2 |
| C | 4 | 5 | 131655 | 699.73 | 675 | 667 | 187.2 |
| D | 5 | 113 | 1532807 | 7641.54 | 705 | 674 | 200.5 |
| D | 8 | 240 | 444484 | 2213.51 | 705 | 674 | 200.5 |
| D | 12 | 128 | 331129 | 1648.15 | 705 | 674 | 200.5 |
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 |  |