Observation information
- date-obs: 2026-03-23
- time-obs: 06:55:13.282500000
- date-end: 2026-03-27
- time-end: 04:56:24.430600000
- obs_id: A14_083T05_9000006560
- exposure: 46344.158695
- sourceid: NGC1556
- observer: Rakshit
- ra_pnt: 64.43679
- dec_pnt: -50.16444
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_083T05_9000006560cztM0_level2.fits
| modeM0/AS1A14_083T05_9000006560cztM0_level2_quad_clean.evt
|
| Size (bytes) | 2,504,416,320 | 1,168,064,640 |
| Size | 2.3 GB
| 1.1 GB
|
| Events in quadrant A | 14,906,890 | 3,824,377 |
| Events in quadrant B | 13,721,162 | 3,997,027 |
| Events in quadrant C | 13,921,068 | 3,513,069 |
| Events in quadrant D | 12,763,720 | 3,516,419 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 6080 | 0 |
| B | 0 | 6080 | 0 |
| C | 0 | 6080 | 0 |
| D | 0 | 6080 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 768137 | 0 |
| B | 0 | 815752 | 0 |
| C | 0 | 870196 | 0 |
| D | 0 | 674486 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 334 | 0 |
| B | 0 | 334 | 0 |
| C | 0 | 334 | 0 |
| D | 0 | 334 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 299356 | 13011 | 4.346330% |
| B | 299357 | 21393 | 7.146317% |
| C | 299356 | 25417 | 8.490560% |
| D | 299359 | 5525 | 1.845610% |
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 | 338471 | 299050 | 0 | 0 | 0.00% | 0.00% |  |
| B | 338471 | 298913 | 0 | 0 | 0.00% | 0.00% |  |
| C | 338472 | 298756 | 0 | 0 | 0.00% | 0.00% |  |
| D | 338472 | 299268 | 0 | 0 | 0.00% | 0.00% |  |
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 | 14 | 188 | 16823 | 10.01 | 3907 | 3581 | 1322.3 |
| A | 9 | 255 | 14977 | 8.62 | 3907 | 3581 | 1322.3 |
| A | 14 | 204 | 13805 | 7.73 | 3907 | 3581 | 1322.3 |
| B | 3 | 25 | 11592 | 9.71 | 3630 | 3429 | 840.8 |
| B | 9 | 173 | 10774 | 8.74 | 3630 | 3429 | 840.8 |
| B | 2 | 245 | 10611 | 8.54 | 3630 | 3429 | 840.8 |
| C | 2 | 31 | 11217 | 6.16 | 3718 | 3370 | 1274.5 |
| C | 15 | 127 | 11074 | 6.04 | 3718 | 3370 | 1274.5 |
| C | 15 | 175 | 10743 | 5.78 | 3718 | 3370 | 1274.5 |
| D | 6 | 218 | 15803 | 10.16 | 3640 | 3219 | 1239.0 |
| D | 15 | 11 | 12465 | 7.46 | 3640 | 3219 | 1239.0 |
| D | 8 | 12 | 11957 | 7.05 | 3640 | 3219 | 1239.0 |
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 |  |