Observation information
- date-obs: 2017-01-12
- time-obs: 04:04:26.887900000
- date-end: 2017-01-12
- time-end: 06:09:11.885300000
- obs_id: T01_151T01_9000000960
- exposure: 2950.94955605
- sourceid: ngc1275
- observer: varsha
- ra_pnt: 49.95067
- dec_pnt: 41.5117
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1T01_151T01_9000000960_06988cztM0_level2.evt
| modeM0/AS1T01_151T01_9000000960_06988cztM0_level2_quad_clean.evt
|
| Size (bytes) | 422,352,000 | 62,020,800 |
| Size | 402.8 MB
| 59.1 MB
|
| Events in quadrant A | 2,939,429 | 364,118 |
| Events in quadrant B | 3,228,622 | 359,198 |
| Events in quadrant C | 2,886,827 | 361,803 |
| Events in quadrant D | 3,305,134 | 350,551 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 130 | 0 |
| B | 0 | 130 | 0 |
| C | 0 | 130 | 0 |
| D | 0 | 130 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12911 | 2 |
| B | 0 | 13684 | 1 |
| C | 0 | 12883 | 1 |
| D | 0 | 13718 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6330 | 35 | 0.552923% |
| B | 6330 | 117 | 1.848341% |
| C | 6330 | 22 | 0.347551% |
| D | 6330 | 60 | 0.947867% |
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 | 7485 | 6331 | 1 | 1 | 0.01% | 0.02% |  |
| B | 7485 | 6331 | 57 | 57 | 0.76% | 0.90% |  |
| C | 7485 | 6331 | 0 | 0 | 0.00% | 0.00% |  |
| D | 7485 | 6331 | 40 | 40 | 0.53% | 0.63% |  |
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 | 13 | 14 | 9117 | 54.31 | 758 | 742 | 154.2 |
| A | 14 | 239 | 7735 | 45.35 | 758 | 742 | 154.2 |
| A | 0 | 226 | 7017 | 40.69 | 758 | 742 | 154.2 |
| B | 0 | 228 | 233543 | 1598.94 | 760 | 743 | 145.6 |
| B | 0 | 219 | 18124 | 119.38 | 760 | 743 | 145.6 |
| B | 12 | 111 | 14601 | 95.18 | 760 | 743 | 145.6 |
| C | 13 | 61 | 5913 | 30.22 | 738 | 743 | 171.1 |
| C | 12 | 4 | 4184 | 20.11 | 738 | 743 | 171.1 |
| C | 1 | 16 | 2051 | 7.65 | 738 | 743 | 171.1 |
| D | 8 | 195 | 312792 | 1720.24 | 736 | 713 | 181.4 |
| D | 14 | 34 | 88730 | 485.17 | 736 | 713 | 181.4 |
| D | 13 | 169 | 58206 | 316.91 | 736 | 713 | 181.4 |
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 |  |