Observation information
- date-obs: 2017-10-24
- time-obs: 09:32:14.649400000
- date-end: 2017-10-24
- time-end: 10:44:12.652600000
- obs_id: A04_171T01_9000001634
- exposure: 2136.98340225
- sourceid: NGC 424
- observer: sachi
- ra_pnt: 17.86511
- dec_pnt: -38.08347
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A04_171T01_9000001634_11211cztM0_level2.evt
| modeM0/AS1A04_171T01_9000001634_11211cztM0_level2_quad_clean.evt
|
| Size (bytes) | 356,353,920 | 41,492,160 |
| Size | 339.8 MB
| 39.6 MB
|
| Events in quadrant A | 2,493,330 | 241,443 |
| Events in quadrant B | 2,787,790 | 237,268 |
| Events in quadrant C | 1,983,845 | 246,939 |
| Events in quadrant D | 3,240,779 | 234,381 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 86 | 0 |
| B | 0 | 86 | 0 |
| C | 0 | 86 | 0 |
| D | 0 | 86 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10168 | 61 |
| B | 0 | 11110 | 59 |
| C | 0 | 9110 | 54 |
| D | 0 | 12792 | 167 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 1 | 0 |
| B | 0 | 1 | 0 |
| C | 0 | 1 | 0 |
| D | 0 | 1 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 4199 | 318 | 7.573232% |
| B | 4199 | 492 | 11.717075% |
| C | 4201 | 252 | 5.998572% |
| D | 4196 | 572 | 13.632031% |
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 | 4299 | 4204 | 12 | 12 | 0.28% | 0.29% |  |
| B | 4306 | 4208 | 115 | 115 | 2.67% | 2.73% |  |
| C | 4304 | 4208 | 0 | 0 | 0.00% | 0.00% |  |
| D | 4298 | 4201 | 238 | 238 | 5.54% | 5.67% |  |
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 | 8 | 15 | 253274 | 2343.58 | 516 | 504 | 107.9 |
| A | 8 | 5 | 186166 | 1721.38 | 516 | 504 | 107.9 |
| A | 1 | 162 | 21050 | 190.49 | 516 | 504 | 107.9 |
| B | 4 | 239 | 686821 | 6685.92 | 507 | 493 | 102.7 |
| B | 15 | 204 | 57986 | 560.07 | 507 | 493 | 102.7 |
| B | 0 | 198 | 23555 | 224.66 | 507 | 493 | 102.7 |
| C | 13 | 61 | 3674 | 26.31 | 507 | 509 | 120.3 |
| C | 5 | 128 | 3189 | 22.28 | 507 | 509 | 120.3 |
| C | 14 | 234 | 1698 | 9.89 | 507 | 509 | 120.3 |
| D | 2 | 14 | 904880 | 7435.12 | 491 | 476 | 121.6 |
| D | 1 | 52 | 369240 | 3031.61 | 491 | 476 | 121.6 |
| D | 12 | 157 | 25966 | 209.55 | 491 | 476 | 121.6 |
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 |  |