ASTROSAT CZTI

Data Quality Report

Orbit 20181007_A05_069T04_9000002418_level2

Creation date: 2018-10-09T10:08:00.617270
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/AS1A05_069T04_9000002418cztM0_level2_bc.evt modeM0/AS1A05_069T04_9000002418cztM0_level2_quad_clean.evt
Size (bytes)2,572,732,800860,777,280
Size2.4 GB 820.9 MB
Events in quadrant A17,174,3915,419,004
Events in quadrant B19,500,0755,521,436
Events in quadrant C17,645,1015,263,811
Events in quadrant D18,857,0665,098,990

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014160
B014160
C014160
D014160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01554550
B01630640
C01579190
D01585770

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6953418442.651940%
B6953419692.831708%
C6953417182.470734%
D6953413942.004775%

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 80410 69530 53 53 0.07% 0.08%
B 80410 69532 104 104 0.13% 0.15%
C 80410 69533 3 3 0.00% 0.00%
D 80410 69536 102 102 0.13% 0.15%

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 2879324 3668.15 3631 3559 784.0
A 15 223 161772 201.81 3631 3559 784.0
A 9 143 87611 107.21 3631 3559 784.0
B 10 16 2006083 2899.78 3692 3602 690.6
B 15 35 690867 995.22 3692 3602 690.6
B 4 173 560984 807.14 3692 3602 690.6
C 3 233 4042836 4918.87 3510 3489 821.2
C 10 169 82008 95.62 3510 3489 821.2
C 7 247 25331 26.6 3510 3489 821.2
D 12 218 1651712 2013.45 3558 3428 818.6
D 1 52 1390810 1694.75 3558 3428 818.6
D 12 110 996663 1213.28 3558 3428 818.6

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