Observation information
- date-obs: 2018-03-30
- time-obs: 10:46:36.153300000
- date-end: 2018-03-31
- time-end: 14:13:04.104400000
- obs_id: T02_038T01_9000001994
- exposure: 36817.5478196
- 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_9000001994cztM0_level2.fits
| modeM0/AS1T02_038T01_9000001994cztM0_level2_quad_clean.evt
|
| Size (bytes) | 858,905,280 | 981,262,080 |
| Size | 819.1 MB
| 935.8 MB
|
| Events in quadrant A | 5,384,982 | 6,374,437 |
| Events in quadrant B | 5,062,210 | 6,254,287 |
| Events in quadrant C | 5,256,140 | 6,058,340 |
| Events in quadrant D | 4,512,352 | 5,239,543 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 188778 | 0 |
| B | 0 | 199018 | 0 |
| C | 0 | 198322 | 0 |
| D | 0 | 221476 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 1720 | 0 |
| B | 0 | 1720 | 0 |
| C | 0 | 1720 | 0 |
| D | 0 | 1720 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 143 | 0 |
| B | 0 | 143 | 0 |
| C | 0 | 143 | 0 |
| D | 0 | 143 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 84537 | 1312 | 1.551983% |
| B | 84537 | 2516 | 2.976212% |
| C | 84537 | 940 | 1.111939% |
| D | 84537 | 3906 | 4.620462% |
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 | 97737 | 84525 | 0 | 0 | 0.00% | 0.00% |  |
| B | 97737 | 84468 | 0 | 0 | 0.00% | 0.00% |  |
| C | 97737 | 84524 | 0 | 0 | 0.00% | 0.00% |  |
| D | 97737 | 84466 | 0 | 0 | 0.00% | 0.00% |  |
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 | 14 | 188 | 5577 | 12.36 | 1394 | 1316 | 344.8 |
| A | 0 | 29 | 5425 | 11.92 | 1394 | 1316 | 344.8 |
| A | 7 | 110 | 4741 | 9.93 | 1394 | 1316 | 344.8 |
| B | 2 | 9 | 4237 | 11.04 | 1334 | 1274 | 268.3 |
| B | 12 | 226 | 3398 | 7.92 | 1334 | 1274 | 268.3 |
| B | 3 | 17 | 3357 | 7.76 | 1334 | 1274 | 268.3 |
| C | 1 | 81 | 4958 | 10.14 | 1383 | 1293 | 361.6 |
| C | 1 | 80 | 4759 | 9.59 | 1383 | 1293 | 361.6 |
| C | 12 | 250 | 3828 | 7.01 | 1383 | 1293 | 361.6 |
| D | 4 | 246 | 3639 | 7.11 | 1284 | 1178 | 346.4 |
| D | 6 | 67 | 3284 | 6.08 | 1284 | 1178 | 346.4 |
| D | 6 | 231 | 3260 | 6.01 | 1284 | 1178 | 346.4 |
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 |  |