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: 47800.5612722
- 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_bc.evt
| modeM0/AS1T02_038T01_9000001994cztM0_level2_quad_clean.evt
|
Size (bytes) | 3,619,094,400 | 1,449,970,560 |
Size | 3.4 GB
| 1.4 GB
|
Events in quadrant A | 22,722,203 | 9,796,151 |
Events in quadrant B | 24,924,027 | 9,728,845 |
Events in quadrant C | 25,530,074 | 9,704,401 |
Events in quadrant D | 30,677,837 | 8,898,843 |
Level1 data integrity
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 143 | 0 |
B | 0 | 143 | 0 |
C | 0 | 143 | 0 |
D | 0 | 143 | 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 M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 188778 | 0 |
B | 0 | 199018 | 0 |
C | 0 | 198322 | 0 |
D | 0 | 221476 | 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 | 97738 | 84530 | 10 | 10 | 0.01% | 0.01% |  |
B | 97739 | 84529 | 140 | 140 | 0.14% | 0.17% |  |
C | 97739 | 84529 | 3 | 3 | 0.00% | 0.00% |  |
D | 97738 | 84529 | 200 | 200 | 0.20% | 0.24% |  |
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 | 238 | 1057589 | 699.65 | 5504 | 5132 | 1504.3 |
A | 15 | 69 | 180919 | 116.86 | 5504 | 5132 | 1504.3 |
A | 1 | 162 | 173036 | 111.62 | 5504 | 5132 | 1504.3 |
B | 3 | 64 | 1462094 | 1151.68 | 5477 | 5347 | 1264.9 |
B | 0 | 182 | 586163 | 459.18 | 5477 | 5347 | 1264.9 |
B | 5 | 32 | 398636 | 310.93 | 5477 | 5347 | 1264.9 |
C | 3 | 233 | 4416101 | 3188.36 | 5377 | 5325 | 1383.4 |
C | 12 | 4 | 70439 | 47.07 | 5377 | 5325 | 1383.4 |
C | 14 | 234 | 36388 | 22.45 | 5377 | 5325 | 1383.4 |
D | 13 | 122 | 4596107 | 3215.17 | 5248 | 4917 | 1428.0 |
D | 5 | 222 | 1784152 | 1245.98 | 5248 | 4917 | 1428.0 |
D | 8 | 195 | 1742009 | 1216.47 | 5248 | 4917 | 1428.0 |
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 |  |