Observation information
- date-obs: 2025-12-01
- time-obs: 05:16:50.485100000
- date-end: 2025-12-01
- time-end: 08:50:33.454400000
- obs_id: A14_025T01_9000006530
- exposure: 9415.11064154
- sourceid: NGC 3227
- observer: arijit
- ra_pnt: 155.8774
- dec_pnt: 19.86505
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_025T01_9000006530_55056cztM0_level2.fits
| modeM0/AS1A14_025T01_9000006530_55056cztM0_level2_quad_clean.evt
|
| Size (bytes) | 638,055,360 | 143,280,000 |
| Size | 608.5 MB
| 136.6 MB
|
| Events in quadrant A | 4,766,782 | 942,813 |
| Events in quadrant B | 5,714,387 | 981,383 |
| Events in quadrant C | 5,362,142 | 898,799 |
| Events in quadrant D | 6,986,167 | 811,136 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 23452 | 1779 |
| B | 0 | 26604 | 2164 |
| C | 0 | 25137 | 1855 |
| D | 0 | 30111 | 2390 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 226 | 16 |
| B | 0 | 226 | 18 |
| C | 0 | 226 | 20 |
| D | 0 | 226 | 14 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17 | 0 |
| B | 0 | 17 | 0 |
| C | 0 | 17 | 0 |
| D | 0 | 17 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 10180 | 211 | 2.072692% |
| B | 10111 | 561 | 5.548413% |
| C | 10175 | 230 | 2.260442% |
| D | 10139 | 493 | 4.862412% |
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 | 12823 | 10492 | 20 | 20 | 0.16% | 0.19% |  |
| B | 12823 | 10463 | 264 | 264 | 2.06% | 2.52% |  |
| C | 12822 | 10500 | 103 | 103 | 0.80% | 0.98% |  |
| D | 12823 | 10486 | 307 | 307 | 2.39% | 2.93% |  |
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 | 8 | 164641 | 584.66 | 1142 | 1115 | 279.7 |
| A | 6 | 161 | 81037 | 285.75 | 1142 | 1115 | 279.7 |
| A | 9 | 129 | 21828 | 74.06 | 1142 | 1115 | 279.7 |
| B | 4 | 81 | 1156731 | 4868.35 | 1101 | 1057 | 237.4 |
| B | 0 | 182 | 70463 | 292.38 | 1101 | 1057 | 237.4 |
| B | 5 | 185 | 69848 | 289.79 | 1101 | 1057 | 237.4 |
| C | 12 | 250 | 369834 | 1219.98 | 1106 | 1097 | 302.2 |
| C | 13 | 3 | 194923 | 641.28 | 1106 | 1097 | 302.2 |
| C | 6 | 223 | 125170 | 410.5 | 1106 | 1097 | 302.2 |
| D | 6 | 239 | 444284 | 1433.1 | 1084 | 1037 | 309.3 |
| D | 11 | 129 | 442141 | 1426.18 | 1084 | 1037 | 309.3 |
| D | 3 | 12 | 345767 | 1114.58 | 1084 | 1037 | 309.3 |
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 |  |