Observation information
- date-obs: 2018-12-24
- time-obs: 13:07:39.423100000
- date-end: 2018-12-25
- time-end: 15:11:48.386000000
- obs_id: A05_140T01_9000002596
- exposure: 48980.0768743
- sourceid: Vela X-1
- observer: Kmukerjee
- ra_pnt: 135.5286
- dec_pnt: -40.5547
Basic statistics of files
Param |
Original file |
Final file |
Filename | modeM0/AS1A05_140T01_9000002596cztM0_level2_bc.evt
| modeM0/AS1A05_140T01_9000002596cztM0_level2_quad_clean.evt
|
Size (bytes) | 2,675,508,480 | 1,029,432,960 |
Size | 2.5 GB
| 981.7 MB
|
Events in quadrant A | 17,815,347 | 6,538,700 |
Events in quadrant B | 17,170,522 | 6,593,597 |
Events in quadrant C | 18,139,833 | 6,308,623 |
Events in quadrant D | 22,404,103 | 6,211,159 |
Level1 data integrity
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 171920 | 0 |
B | 0 | 168295 | 0 |
C | 0 | 173088 | 0 |
D | 0 | 185641 | 0 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 132 | 0 |
B | 0 | 132 | 0 |
C | 0 | 132 | 0 |
D | 0 | 132 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 1642 | 0 |
B | 0 | 1642 | 0 |
C | 0 | 1642 | 0 |
D | 0 | 1642 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 80645 | 1376 | 1.706243% |
B | 80645 | 1101 | 1.365243% |
C | 80645 | 1356 | 1.681443% |
D | 80645 | 1923 | 2.384525% |
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 | 93850 | 80641 | 33 | 33 | 0.04% | 0.04% |  |
B | 93850 | 80642 | 6 | 6 | 0.01% | 0.01% |  |
C | 93850 | 80641 | 0 | 0 | 0.00% | 0.00% |  |
D | 93850 | 80642 | 238 | 238 | 0.25% | 0.30% |  |
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 | 15 | 174 | 1203387 | 1296.01 | 4296 | 4219 | 925.3 |
A | 4 | 208 | 97872 | 101.22 | 4296 | 4219 | 925.3 |
A | 0 | 226 | 28490 | 26.23 | 4296 | 4219 | 925.3 |
B | 10 | 245 | 241809 | 293.86 | 4332 | 4231 | 808.5 |
B | 0 | 189 | 91722 | 108.22 | 4332 | 4231 | 808.5 |
B | 0 | 219 | 58327 | 66.91 | 4332 | 4231 | 808.5 |
C | 3 | 233 | 1773295 | 1827.35 | 4160 | 4139 | 968.2 |
C | 5 | 218 | 320934 | 327.21 | 4160 | 4139 | 968.2 |
C | 13 | 61 | 24393 | 20.92 | 4160 | 4139 | 968.2 |
D | 5 | 222 | 3840517 | 3953.37 | 4226 | 4090 | 970.4 |
D | 13 | 189 | 1030320 | 1057.51 | 4226 | 4090 | 970.4 |
D | 2 | 234 | 322422 | 328.04 | 4226 | 4090 | 970.4 |
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 |  |