Observation information
- date-obs: 2025-12-04
- time-obs: 03:59:40.828600000
- date-end: 2025-12-04
- time-end: 06:14:17.807200000
- obs_id: A14_025T01_9000006530
- exposure: 6032.01467013
- 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_55099cztM0_level2.fits
| modeM0/AS1A14_025T01_9000006530_55099cztM0_level2_quad_clean.evt
|
| Size (bytes) | 461,122,560 | 102,378,240 |
| Size | 439.8 MB
| 97.6 MB
|
| Events in quadrant A | 3,168,362 | 684,000 |
| Events in quadrant B | 3,110,127 | 734,087 |
| Events in quadrant C | 3,828,645 | 657,518 |
| Events in quadrant D | 6,420,142 | 539,239 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14825 | 2 |
| B | 0 | 14578 | 2 |
| C | 0 | 16180 | 2 |
| D | 0 | 24249 | 2 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 142 | 0 |
| B | 0 | 142 | 0 |
| C | 0 | 142 | 0 |
| D | 0 | 142 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10 | 0 |
| B | 0 | 10 | 0 |
| C | 0 | 10 | 0 |
| D | 0 | 11 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6963 | 146 | 2.096797% |
| B | 6963 | 141 | 2.024989% |
| C | 6963 | 172 | 2.470200% |
| D | 6963 | 1074 | 15.424386% |
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 | 7913 | 6965 | 1 | 1 | 0.01% | 0.01% |  |
| B | 7913 | 6965 | 2 | 2 | 0.03% | 0.03% |  |
| C | 7913 | 6965 | 73 | 73 | 0.92% | 1.05% |  |
| D | 7913 | 6964 | 859 | 859 | 10.86% | 12.33% |  |
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 | 7 | 237 | 62208 | 317.42 | 777 | 757 | 193.6 |
| A | 4 | 3 | 50696 | 257.96 | 777 | 757 | 193.6 |
| A | 7 | 190 | 13776 | 67.25 | 777 | 757 | 193.6 |
| B | 4 | 21 | 52900 | 314.21 | 762 | 734 | 166.0 |
| B | 12 | 111 | 19775 | 114.69 | 762 | 734 | 166.0 |
| B | 5 | 185 | 19155 | 110.96 | 762 | 734 | 166.0 |
| C | 13 | 3 | 265624 | 1284.45 | 746 | 742 | 206.2 |
| C | 1 | 16 | 168480 | 813.39 | 746 | 742 | 206.2 |
| C | 6 | 223 | 138616 | 668.57 | 746 | 742 | 206.2 |
| D | 15 | 94 | 1480561 | 7309.71 | 707 | 676 | 202.5 |
| D | 6 | 239 | 1154274 | 5698.05 | 707 | 676 | 202.5 |
| D | 2 | 249 | 613362 | 3026.29 | 707 | 676 | 202.5 |
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 |  |