Observation information
- date-obs: 2026-03-23
- time-obs: 20:41:18.157400000
- date-end: 2026-03-23
- time-end: 22:48:34.139400000
- obs_id: A14_083T05_9000006560
- exposure: 7194.21361512
- 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_9000006560_56729cztM0_level2.fits
| modeM0/AS1A14_083T05_9000006560_56729cztM0_level2_quad_clean.evt
|
| Size (bytes) | 497,347,200 | 108,904,320 |
| Size | 474.3 MB
| 103.9 MB
|
| Events in quadrant A | 5,547,444 | 689,535 |
| Events in quadrant B | 3,847,178 | 774,895 |
| Events in quadrant C | 4,573,369 | 661,861 |
| Events in quadrant D | 3,848,885 | 640,136 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 152 | 0 |
| B | 0 | 152 | 0 |
| C | 0 | 152 | 0 |
| D | 0 | 152 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 21736 | 1 |
| B | 0 | 17081 | 0 |
| C | 0 | 19306 | 0 |
| D | 0 | 17229 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7635 | 438 | 5.736739% |
| B | 7636 | 61 | 0.798848% |
| C | 7636 | 297 | 3.889471% |
| D | 7636 | 42 | 0.550026% |
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 | 7635 | 7635 | 398 | 398 | 5.21% | 5.21% |  |
| B | 7636 | 7636 | 30 | 30 | 0.39% | 0.39% |  |
| C | 7636 | 7636 | 261 | 261 | 3.42% | 3.42% |  |
| D | 7636 | 7636 | 47 | 47 | 0.62% | 0.62% |  |
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 | 3 | 14 | 851173 | 4289.01 | 805 | 785 | 198.3 |
| A | 3 | 62 | 807571 | 4069.1 | 805 | 785 | 198.3 |
| A | 10 | 251 | 687681 | 3464.42 | 805 | 785 | 198.3 |
| B | 5 | 185 | 314926 | 1759.11 | 818 | 785 | 178.6 |
| B | 4 | 206 | 112449 | 625.29 | 818 | 785 | 178.6 |
| B | 10 | 247 | 77585 | 430.06 | 818 | 785 | 178.6 |
| C | 15 | 208 | 525323 | 2431.17 | 781 | 773 | 215.8 |
| C | 13 | 3 | 459752 | 2127.26 | 781 | 773 | 215.8 |
| C | 6 | 223 | 225930 | 1043.55 | 781 | 773 | 215.8 |
| D | 2 | 207 | 274383 | 1228.26 | 789 | 754 | 222.8 |
| D | 2 | 249 | 151061 | 674.7 | 789 | 754 | 222.8 |
| D | 2 | 252 | 132941 | 593.36 | 789 | 754 | 222.8 |
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 |  |