Observation information
- date-obs: 2015-10-16
- time-obs: 19:47:35.641300000
- date-end: 2015-10-16
- time-end: 21:55:00.641700000
- obs_id: P01_126T01_9000000030
- exposure: 3662.28112375
- sourceid: Crab-SSM1-P1
- observer: ramadevi
- ra_pnt: 80.3923
- dec_pnt: -68.1274
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1P01_126T01_9000000030_00278cztM0_level2.evt
| modeM0/AS1P01_126T01_9000000030_00278cztM0_level2_quad_clean.evt
|
| Size (bytes) | 840,242,880 | 57,360,960 |
| Size | 801.3 MB
| 54.7 MB
|
| Events in quadrant A | 6,514,331 | 338,966 |
| Events in quadrant B | 6,597,553 | 342,042 |
| Events in quadrant C | 6,277,343 | 329,149 |
| Events in quadrant D | 5,675,944 | 325,793 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 23472 | 3 |
| B | 0 | 23646 | 2 |
| C | 0 | 22757 | 2 |
| D | 0 | 20924 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 18 | 0 |
| B | 0 | 18 | 0 |
| C | 0 | 18 | 0 |
| D | 0 | 19 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 118 | 0 |
| B | 0 | 118 | 0 |
| C | 0 | 118 | 0 |
| D | 0 | 118 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 5724 | 3 | 0.052411% |
| B | 5724 | 13 | 0.227114% |
| C | 5724 | 13 | 0.227114% |
| D | 5724 | 4 | 0.069881% |
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 | 7460 | 5725 | 128 | 128 | 1.72% | 2.24% |  |
| B | 7460 | 5725 | 86 | 86 | 1.15% | 1.50% |  |
| C | 7460 | 5725 | 115 | 115 | 1.54% | 2.01% |  |
| D | 7460 | 5725 | 39 | 39 | 0.52% | 0.68% |  |
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 | 65 | 161594 | 442.15 | 1632 | 1620 | 361.8 |
| A | 15 | 17 | 12279 | 29.46 | 1632 | 1620 | 361.8 |
| A | 13 | 17 | 7643 | 16.65 | 1632 | 1620 | 361.8 |
| B | 5 | 176 | 78528 | 196.51 | 1661 | 1671 | 391.1 |
| B | 0 | 85 | 62680 | 155.99 | 1661 | 1671 | 391.1 |
| B | 5 | 46 | 53034 | 131.33 | 1661 | 1671 | 391.1 |
| C | 14 | 48 | 364275 | 868.64 | 1498 | 1552 | 417.6 |
| C | 5 | 251 | 15326 | 32.99 | 1498 | 1552 | 417.6 |
| C | 1 | 1 | 8944 | 17.7 | 1498 | 1552 | 417.6 |
| D | 13 | 216 | 45941 | 99.34 | 1421 | 1473 | 447.7 |
| D | 1 | 7 | 35576 | 76.18 | 1421 | 1473 | 447.7 |
| D | 10 | 154 | 32762 | 69.9 | 1421 | 1473 | 447.7 |
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 |  |