Observation information
- date-obs: 2026-05-02
- time-obs: 22:52:41.925000000
- date-end: 2026-05-03
- time-end: 01:12:52.901500000
- obs_id: A14_049T03_9000006570
- exposure: 7083.05005133
- sourceid: NGC 1796
- observer: amrutha
- ra_pnt: 75.67679
- dec_pnt: -61.13996
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_049T03_9000006570_57325cztM0_level2.fits
| modeM0/AS1A14_049T03_9000006570_57325cztM0_level2_quad_clean.evt
|
| Size (bytes) | 690,402,240 | 98,101,440 |
| Size | 658.4 MB
| 93.6 MB
|
| Events in quadrant A | 6,169,935 | 641,155 |
| Events in quadrant B | 3,884,184 | 684,371 |
| Events in quadrant C | 7,952,693 | 553,917 |
| Events in quadrant D | 6,926,977 | 532,055 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 23972 | 1 |
| B | 0 | 17436 | 1 |
| C | 0 | 29210 | 1 |
| D | 0 | 26283 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 4 | 0 |
| B | 0 | 4 | 0 |
| C | 0 | 4 | 0 |
| D | 0 | 4 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 162 | 0 |
| B | 0 | 162 | 0 |
| C | 0 | 162 | 0 |
| D | 0 | 162 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 8037 | 393 | 4.889884% |
| B | 8037 | 171 | 2.127660% |
| C | 8037 | 1165 | 14.495459% |
| D | 8036 | 903 | 11.236934% |
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 | 8686 | 8312 | 222 | 222 | 2.56% | 2.67% |  |
| B | 8686 | 8311 | 12 | 12 | 0.14% | 0.14% |  |
| C | 8686 | 8312 | 954 | 954 | 10.98% | 11.48% |  |
| D | 8685 | 8302 | 716 | 716 | 8.24% | 8.62% |  |
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 | 0 | 12 | 1970148 | 9202.74 | 874 | 852 | 214.0 |
| A | 10 | 251 | 740835 | 3458.02 | 874 | 852 | 214.0 |
| A | 3 | 245 | 16558 | 73.4 | 874 | 852 | 214.0 |
| B | 5 | 185 | 131625 | 696.83 | 873 | 840 | 187.7 |
| B | 7 | 252 | 98431 | 519.97 | 873 | 840 | 187.7 |
| B | 10 | 16 | 76910 | 405.31 | 873 | 840 | 187.7 |
| C | 15 | 224 | 3846617 | 17692.99 | 808 | 803 | 217.4 |
| C | 14 | 254 | 368038 | 1689.5 | 808 | 803 | 217.4 |
| C | 1 | 12 | 275690 | 1264.64 | 808 | 803 | 217.4 |
| D | 3 | 224 | 2616652 | 11471.85 | 816 | 779 | 228.0 |
| D | 2 | 31 | 431805 | 1890.25 | 816 | 779 | 228.0 |
| D | 7 | 96 | 285653 | 1249.31 | 816 | 779 | 228.0 |
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 |  |