Observation information
- date-obs: 2018-07-31
- time-obs: 01:04:29.348300000
- date-end: 2018-08-01
- time-end: 06:03:45.343600000
- obs_id: A04_126T01_9000002262
- exposure: 61797.1936226
- sourceid: 4U 1735-44
- observer: anjali
- ra_pnt: 264.7429
- dec_pnt: -44.45
Basic statistics of files
Param |
Original file |
Final file |
Filename | modeM0/AS1A04_126T01_9000002262cztM0_level2_bc.evt
| modeM0/AS1A04_126T01_9000002262cztM0_level2_quad_clean.evt
|
Size (bytes) | 3,191,011,200 | 1,249,168,320 |
Size | 3.0 GB
| 1.2 GB
|
Events in quadrant A | 18,326,831 | 8,000,741 |
Events in quadrant B | 23,787,088 | 8,018,488 |
Events in quadrant C | 22,966,960 | 7,964,389 |
Events in quadrant D | 25,356,705 | 7,613,571 |
Level1 data integrity
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 188077 | 0 |
B | 0 | 205520 | 0 |
C | 0 | 199092 | 0 |
D | 0 | 209541 | 0 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 134 | 0 |
B | 0 | 134 | 0 |
C | 0 | 134 | 0 |
D | 0 | 134 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 1852 | 0 |
B | 0 | 1852 | 0 |
C | 0 | 1852 | 0 |
D | 0 | 1852 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 91047 | 760 | 0.834734% |
B | 91047 | 1869 | 2.052786% |
C | 91047 | 1123 | 1.233429% |
D | 91047 | 2042 | 2.242798% |
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 | 104358 | 91045 | 4 | 4 | 0.00% | 0.00% |  |
B | 104358 | 91042 | 166 | 166 | 0.16% | 0.18% |  |
C | 104358 | 91042 | 11 | 11 | 0.01% | 0.01% |  |
D | 104358 | 91043 | 542 | 542 | 0.52% | 0.60% |  |
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 | 9 | 143 | 269974 | 262.3 | 4645 | 4555 | 1011.9 |
A | 15 | 239 | 130169 | 124.14 | 4645 | 4555 | 1011.9 |
A | 4 | 2 | 46983 | 41.93 | 4645 | 4555 | 1011.9 |
B | 10 | 16 | 2692427 | 3036.57 | 4665 | 4542 | 885.2 |
B | 10 | 245 | 829437 | 931.91 | 4665 | 4542 | 885.2 |
B | 0 | 189 | 285166 | 317.03 | 4665 | 4542 | 885.2 |
C | 3 | 233 | 5057779 | 5046.91 | 4530 | 4471 | 1001.3 |
C | 7 | 247 | 120460 | 115.84 | 4530 | 4471 | 1001.3 |
C | 13 | 61 | 26523 | 22.02 | 4530 | 4471 | 1001.3 |
D | 2 | 33 | 2449967 | 2327.88 | 4539 | 4378 | 1050.6 |
D | 1 | 20 | 1388581 | 1317.58 | 4539 | 4378 | 1050.6 |
D | 1 | 255 | 1222197 | 1159.2 | 4539 | 4378 | 1050.6 |
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 |  |