Observation information
- date-obs: 2026-07-13
- time-obs: 03:00:00.822500000
- date-end: 2026-07-13
- time-end: 05:03:12.064800000
- obs_id: A14_045T01_9000006590
- exposure: 5830.99446136
- 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_58383cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58383cztM0_level2_quad_clean.evt
|
| Size (bytes) | 424,906,560 | 94,858,560 |
| Size | 405.2 MB
| 90.5 MB
|
| Events in quadrant A | 3,380,405 | 624,879 |
| Events in quadrant B | 4,862,758 | 645,134 |
| Events in quadrant C | 3,078,305 | 603,260 |
| Events in quadrant D | 3,917,651 | 559,761 |
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 | 14340 | 1 |
| B | 0 | 18616 | 1 |
| C | 0 | 13668 | 1 |
| D | 0 | 15897 | 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 | 6293 | 139 | 2.208803% |
| B | 6293 | 516 | 8.199587% |
| C | 6293 | 70 | 1.112347% |
| D | 6292 | 131 | 2.082009% |
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 | 7393 | 6293 | 63 | 63 | 0.85% | 1.00% |  |
| B | 7393 | 6293 | 276 | 276 | 3.73% | 4.39% |  |
| C | 7393 | 6294 | 45 | 45 | 0.61% | 0.71% |  |
| D | 7392 | 6292 | 109 | 109 | 1.47% | 1.73% |  |
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 | 13 | 248 | 256512 | 1440.03 | 725 | 707 | 177.6 |
| A | 12 | 114 | 84993 | 474.48 | 725 | 707 | 177.6 |
| A | 12 | 80 | 73090 | 407.47 | 725 | 707 | 177.6 |
| B | 5 | 172 | 903031 | 5953.07 | 704 | 680 | 151.6 |
| B | 6 | 255 | 513056 | 3380.3 | 704 | 680 | 151.6 |
| B | 2 | 249 | 150354 | 987.44 | 704 | 680 | 151.6 |
| C | 4 | 5 | 179534 | 923.72 | 701 | 694 | 193.6 |
| C | 6 | 223 | 102713 | 526.93 | 701 | 694 | 193.6 |
| C | 7 | 2 | 15295 | 75.41 | 701 | 694 | 193.6 |
| D | 12 | 110 | 805789 | 4098.08 | 696 | 663 | 196.5 |
| D | 11 | 129 | 120888 | 611.94 | 696 | 663 | 196.5 |
| D | 2 | 249 | 87022 | 439.57 | 696 | 663 | 196.5 |
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 |  |