ASTROSAT CZTI

Data Quality Report

Orbit 20160116_G02_052T02_9000000276_level2

Creation date: 2020-10-16T19:48:35.920405
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1G02_052T02_9000000276cztM0_level2_bc.evt modeM0/AS1G02_052T02_9000000276cztM0_level2_quad_clean.evt
Size (bytes)3,403,008,0001,229,423,040
Size3.2 GB 1.1 GB
Events in quadrant A20,542,4807,580,698
Events in quadrant B29,758,4147,661,288
Events in quadrant C21,117,6487,593,668
Events in quadrant D24,586,8167,308,396

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01880
B01880
C01880
D01880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04790440
B05259510
C04680080
D04717530

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011420
B011430
C011480
D011450

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1107097340.662999%
B11067824482.211822%
C1107306150.555405%
D11065825672.319760%

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 161575 111551 1 1 0.00% 0.00%
B 161575 111558 181 181 0.11% 0.16%
C 161575 111596 52 52 0.03% 0.05%
D 161575 111409 216 216 0.13% 0.19%

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 14 438453 408.86 5145 5016 1060.1
A 13 9 96281 86.09 5145 5016 1060.1
A 8 15 68422 59.81 5145 5016 1060.1
B 7 205 7868316 8670.44 5210 5041 906.9
B 0 234 1002140 1099.45 5210 5041 906.9
B 8 3 246598 266.35 5210 5041 906.9
C 2 53 730817 711.0 5072 4972 1020.9
C 12 4 223331 213.89 5072 4972 1020.9
C 9 70 67325 61.08 5072 4972 1020.9
D 13 53 1977486 1836.35 5035 4872 1074.2
D 2 152 592396 546.94 5035 4872 1074.2
D 13 105 564992 521.43 5035 4872 1074.2

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