Observation information
- date-obs: 2021-07-22
- time-obs: 18:39:18.219500000
- date-end: 2021-07-24
- time-end: 15:31:48.147800000
- obs_id: T04_029T01_9000004582
- exposure: 75775.945971
- sourceid: GRS 1915+105
- observer: ravibt
- ra_pnt: 288.7982
- dec_pnt: 10.94581
Basic statistics of files
Param |
Original file |
Final file |
Filename | modeM0/AS1T04_029T01_9000004582cztM0_level2_bc.evt
| modeM0/AS1T04_029T01_9000004582cztM0_level2_quad_clean.evt
|
Size (bytes) | 6,235,551,360 | 1,681,200,000 |
Size | 5.8 GB
| 1.6 GB
|
Events in quadrant A | 28,697,880 | 10,807,324 |
Events in quadrant B | 74,333,546 | 10,605,529 |
Events in quadrant C | 34,819,044 | 10,233,676 |
Events in quadrant D | 41,846,987 | 10,050,734 |
Level1 data integrity
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 2726 | 0 |
B | 0 | 2730 | 0 |
C | 0 | 2742 | 0 |
D | 0 | 2740 | 0 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 221 | 0 |
B | 0 | 221 | 0 |
C | 0 | 221 | 0 |
D | 0 | 221 | 0 |
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 279895 | 0 |
B | 0 | 431311 | 0 |
C | 0 | 311292 | 0 |
D | 0 | 318672 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 134754 | 1847 | 1.370646% |
B | 134342 | 7019 | 5.224725% |
C | 134720 | 5217 | 3.872476% |
D | 134699 | 2428 | 1.802538% |
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 | 161551 | 135374 | 0 | 0 | 0.00% | 0.00% |  |
B | 161551 | 134854 | 1316 | 1316 | 0.81% | 0.98% |  |
C | 161551 | 135353 | 40 | 40 | 0.02% | 0.03% |  |
D | 161551 | 135317 | 156 | 156 | 0.10% | 0.12% |  |
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 | 13 | 254 | 215365 | 131.55 | 7438 | 7327 | 1581.4 |
A | 0 | 226 | 46599 | 24.83 | 7438 | 7327 | 1581.4 |
A | 12 | 194 | 42652 | 22.34 | 7438 | 7327 | 1581.4 |
B | 6 | 159 | 37270670 | 26911.11 | 7381 | 7210 | 1384.7 |
B | 12 | 1 | 7377657 | 5322.83 | 7381 | 7210 | 1384.7 |
B | 0 | 190 | 727637 | 520.28 | 7381 | 7210 | 1384.7 |
C | 3 | 233 | 2770728 | 1661.35 | 7072 | 7058 | 1663.5 |
C | 0 | 10 | 2170304 | 1300.41 | 7072 | 7058 | 1663.5 |
C | 10 | 22 | 2071836 | 1241.22 | 7072 | 7058 | 1663.5 |
D | 8 | 195 | 11159677 | 6834.24 | 7217 | 6998 | 1631.9 |
D | 12 | 218 | 1539784 | 939.28 | 7217 | 6998 | 1631.9 |
D | 2 | 250 | 500426 | 302.37 | 7217 | 6998 | 1631.9 |
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 |  |