Observation information
- date-obs: 2017-10-03
- time-obs: 09:26:54.473200000
- date-end: 2017-10-04
- time-end: 14:43:43.450100000
- obs_id: A04_055T02_9000001576
- exposure: 59458.4797526
- sourceid: 4U 1820-30
- observer: sudip
- ra_pnt: 275.919
- dec_pnt: -30.36128
Basic statistics of files
Param |
Original file |
Final file |
Filename | modeM0/AS1A04_055T02_9000001576cztM0_level2.evt
| modeM0/AS1A04_055T02_9000001576cztM0_level2_quad_clean.evt
|
Size (bytes) | 7,699,176,000 | 1,204,182,720 |
Size | 7.2 GB
| 1.1 GB
|
Events in quadrant A | 64,113,915 | 7,574,867 |
Events in quadrant B | 63,781,173 | 7,689,221 |
Events in quadrant C | 40,997,587 | 7,798,988 |
Events in quadrant D | 58,230,314 | 7,247,466 |
Level1 data integrity
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 1832 | 0 |
B | 0 | 1832 | 0 |
C | 0 | 1832 | 0 |
D | 0 | 1832 | 0 |
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 249335 | 0 |
B | 0 | 249006 | 0 |
C | 0 | 185013 | 0 |
D | 0 | 234407 | 0 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 155 | 0 |
B | 0 | 155 | 0 |
C | 0 | 155 | 0 |
D | 0 | 155 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 89874 | 6181 | 6.877406% |
B | 89875 | 6221 | 6.921836% |
C | 89875 | 658 | 0.732128% |
D | 89874 | 4527 | 5.037052% |
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 | 105410 | 89889 | 3834 | 3834 | 3.64% | 4.27% |  |
B | 105410 | 89890 | 3434 | 3434 | 3.26% | 3.82% |  |
C | 105410 | 89891 | 7 | 7 | 0.01% | 0.01% |  |
D | 105410 | 89890 | 3590 | 3590 | 3.41% | 3.99% |  |
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 | 5 | 15511815 | 7292.64 | 10624 | 10425 | 2125.6 |
A | 13 | 251 | 6385116 | 2998.98 | 10624 | 10425 | 2125.6 |
A | 15 | 223 | 316633 | 144.06 | 10624 | 10425 | 2125.6 |
B | 4 | 239 | 19323888 | 9646.26 | 10690 | 10449 | 2002.2 |
B | 10 | 245 | 988082 | 488.29 | 10690 | 10449 | 2002.2 |
B | 0 | 214 | 544885 | 266.93 | 10690 | 10449 | 2002.2 |
C | 13 | 61 | 78098 | 28.15 | 10481 | 10532 | 2400.0 |
C | 14 | 234 | 63371 | 22.02 | 10481 | 10532 | 2400.0 |
C | 8 | 222 | 40154 | 12.34 | 10481 | 10532 | 2400.0 |
D | 13 | 152 | 6411699 | 2573.17 | 10320 | 10040 | 2487.8 |
D | 1 | 52 | 2877041 | 1152.4 | 10320 | 10040 | 2487.8 |
D | 12 | 33 | 2448216 | 980.03 | 10320 | 10040 | 2487.8 |
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 |  |