Observation information
- date-obs: 2026-03-24
- time-obs: 08:56:09.445500000
- date-end: 2026-03-24
- time-end: 11:02:44.025000000
- obs_id: A14_083T05_9000006560
- exposure: 5728.88793945
- 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_56737cztM0_level2.fits
| modeM0/AS1A14_083T05_9000006560_56737cztM0_level2_quad_clean.evt
|
| Size (bytes) | 533,301,120 | 95,356,800 |
| Size | 508.6 MB
| 90.9 MB
|
| Events in quadrant A | 3,681,970 | 629,710 |
| Events in quadrant B | 5,685,572 | 661,199 |
| Events in quadrant C | 6,436,874 | 543,378 |
| Events in quadrant D | 3,420,139 | 589,272 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 134 | 0 |
| B | 0 | 134 | 0 |
| C | 0 | 134 | 0 |
| D | 0 | 134 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15706 | 1 |
| B | 0 | 21436 | 1 |
| C | 0 | 23956 | 1 |
| D | 0 | 14442 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10 | 0 |
| B | 0 | 10 | 0 |
| C | 0 | 10 | 0 |
| D | 0 | 10 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6650 | 330 | 4.962406% |
| B | 6651 | 599 | 9.006164% |
| C | 6651 | 1073 | 16.132912% |
| D | 6651 | 103 | 1.548639% |
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 | 7595 | 6650 | 238 | 238 | 3.13% | 3.58% |  |
| B | 7596 | 6651 | 399 | 399 | 5.25% | 6.00% |  |
| C | 7596 | 6651 | 972 | 972 | 12.80% | 14.61% |  |
| D | 7596 | 6651 | 24 | 24 | 0.32% | 0.36% |  |
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 | 62 | 709913 | 3927.78 | 731 | 710 | 180.6 |
| A | 10 | 251 | 113536 | 624.86 | 731 | 710 | 180.6 |
| A | 8 | 249 | 15736 | 83.22 | 731 | 710 | 180.6 |
| B | 5 | 185 | 2125744 | 13945.12 | 704 | 676 | 152.4 |
| B | 4 | 206 | 400355 | 2622.77 | 704 | 676 | 152.4 |
| B | 8 | 128 | 146435 | 956.5 | 704 | 676 | 152.4 |
| C | 15 | 230 | 2802576 | 15227.97 | 670 | 665 | 184.0 |
| C | 13 | 3 | 537969 | 2920.17 | 670 | 665 | 184.0 |
| C | 14 | 96 | 268208 | 1454.06 | 670 | 665 | 184.0 |
| D | 5 | 113 | 148757 | 738.12 | 719 | 687 | 200.6 |
| D | 2 | 31 | 84228 | 416.45 | 719 | 687 | 200.6 |
| D | 8 | 31 | 61021 | 300.76 | 719 | 687 | 200.6 |
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 |  |