Observation information
- date-obs: 2018-03-30
- time-obs: 21:40:38.152600000
- date-end: 2018-03-30
- time-end: 22:54:26.150500000
- obs_id: T02_038T01_9000001994
- exposure: 3492.86256716
- sourceid: MAXI J1820+070
- observer: pgandhi
- ra_pnt: 275.1292
- dec_pnt: 7.184722
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1T02_038T01_9000001994_13542cztM0_level2.evt
| modeM0/AS1T02_038T01_9000001994_13542cztM0_level2_quad_clean.evt
|
| Size (bytes) | 339,266,880 | 97,436,160 |
| Size | 323.6 MB
| 92.9 MB
|
| Events in quadrant A | 2,230,482 | 677,796 |
| Events in quadrant B | 2,391,842 | 668,975 |
| Events in quadrant C | 2,535,379 | 668,698 |
| Events in quadrant D | 2,815,460 | 624,180 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 9087 | 1 |
| B | 0 | 9589 | 0 |
| C | 0 | 10201 | 0 |
| D | 0 | 11074 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 88 | 0 |
| B | 0 | 88 | 0 |
| C | 0 | 88 | 0 |
| D | 0 | 88 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 4428 | 2 | 0.045167% |
| B | 4428 | 52 | 1.174345% |
| C | 4428 | 2 | 0.045167% |
| D | 4428 | 164 | 3.703704% |
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 | 4429 | 4429 | 0 | 0 | 0.00% | 0.00% |  |
| B | 4429 | 4429 | 34 | 34 | 0.77% | 0.77% |  |
| C | 4429 | 4429 | 0 | 0 | 0.00% | 0.00% |  |
| D | 4429 | 4429 | 131 | 131 | 2.96% | 2.96% |  |
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 | 1 | 162 | 6983 | 47.62 | 578 | 564 | 134.8 |
| A | 0 | 226 | 4925 | 32.35 | 578 | 564 | 134.8 |
| A | 12 | 194 | 4216 | 27.09 | 578 | 564 | 134.8 |
| B | 3 | 64 | 75232 | 615.19 | 572 | 561 | 121.4 |
| B | 4 | 142 | 36456 | 295.73 | 572 | 561 | 121.4 |
| B | 4 | 173 | 20311 | 162.71 | 572 | 561 | 121.4 |
| C | 3 | 233 | 344457 | 2455.59 | 562 | 568 | 140.0 |
| C | 13 | 61 | 4054 | 24.89 | 562 | 568 | 140.0 |
| C | 14 | 220 | 1613 | 7.46 | 562 | 568 | 140.0 |
| D | 13 | 122 | 543047 | 3755.48 | 546 | 529 | 144.5 |
| D | 2 | 14 | 61306 | 420.72 | 546 | 529 | 144.5 |
| D | 5 | 222 | 44030 | 301.13 | 546 | 529 | 144.5 |
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 |  |