Observation information
- date-obs: 2026-07-17
- time-obs: 21:17:12.176900000
- date-end: 2026-07-17
- time-end: 23:30:11.147700000
- obs_id: A14_045T01_9000006590
- exposure: 5789.88907057
- 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_58454cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58454cztM0_level2_quad_clean.evt
|
| Size (bytes) | 401,616,000 | 96,537,600 |
| Size | 383.0 MB
| 92.1 MB
|
| Events in quadrant A | 3,094,220 | 639,226 |
| Events in quadrant B | 4,769,045 | 654,181 |
| Events in quadrant C | 2,965,496 | 618,649 |
| Events in quadrant D | 3,547,926 | 572,447 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 126 | 0 |
| B | 0 | 126 | 0 |
| C | 0 | 126 | 0 |
| D | 0 | 126 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13612 | 2 |
| B | 0 | 18338 | 2 |
| C | 0 | 13337 | 2 |
| D | 0 | 14998 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17 | 0 |
| B | 0 | 18 | 0 |
| C | 0 | 18 | 0 |
| D | 0 | 18 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6294 | 105 | 1.668255% |
| B | 6294 | 544 | 8.643152% |
| C | 6294 | 29 | 0.460756% |
| D | 6294 | 95 | 1.509374% |
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 | 7554 | 6294 | 36 | 36 | 0.48% | 0.57% |  |
| B | 7554 | 6294 | 419 | 419 | 5.55% | 6.66% |  |
| C | 7554 | 6295 | 17 | 17 | 0.23% | 0.27% |  |
| D | 7554 | 6295 | 80 | 80 | 1.06% | 1.27% |  |
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 | 180536 | 1007.19 | 713 | 696 | 178.6 |
| A | 13 | 248 | 56956 | 315.08 | 713 | 696 | 178.6 |
| A | 3 | 14 | 39396 | 216.74 | 713 | 696 | 178.6 |
| B | 5 | 172 | 919947 | 6191.56 | 693 | 671 | 148.5 |
| B | 4 | 201 | 664431 | 4470.59 | 693 | 671 | 148.5 |
| B | 5 | 185 | 142905 | 957.98 | 693 | 671 | 148.5 |
| C | 6 | 223 | 68766 | 354.75 | 693 | 688 | 191.9 |
| C | 14 | 245 | 56914 | 292.99 | 693 | 688 | 191.9 |
| C | 4 | 5 | 31732 | 161.77 | 693 | 688 | 191.9 |
| D | 8 | 240 | 552672 | 2839.03 | 680 | 649 | 194.4 |
| D | 2 | 153 | 137548 | 704.07 | 680 | 649 | 194.4 |
| D | 5 | 173 | 47152 | 239.16 | 680 | 649 | 194.4 |
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 |  |