ASTROSAT CZTI

Data Quality Report

Orbit 20210709_A10_113T01_9000004524_level2

Creation date: 2021-07-12T11:52:40.451046
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A10_113T01_9000004524cztM0_level2_bc.evt modeM0/AS1A10_113T01_9000004524cztM0_level2_quad_clean.evt
Size (bytes)1,243,448,640354,553,920
Size1.2 GB 338.1 MB
Events in quadrant A5,901,8552,258,524
Events in quadrant B13,801,0162,233,170
Events in quadrant C6,798,3212,150,613
Events in quadrant D9,220,6762,143,696

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05800
B05800
C05800
D05800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0582720
B0864690
C0623580
D0686080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A283951240.436697%
B283954471.574221%
C283956372.243353%
D283952480.873393%

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 32455 28395 0 0 0.00% 0.00%
B 32455 28396 3 3 0.01% 0.01%
C 32455 28397 10 10 0.03% 0.04%
D 32455 28396 13 13 0.04% 0.05%

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 47170 139.59 1520 1493 327.2
A 5 16 22039 62.79 1520 1493 327.2
A 0 226 9670 24.99 1520 1493 327.2
B 6 159 7536664 26072.26 1518 1485 289.0
B 4 80 166808 572.03 1518 1485 289.0
B 0 190 104483 356.38 1518 1485 289.0
C 0 10 756453 2203.41 1451 1445 342.7
C 3 233 330912 961.52 1451 1445 342.7
C 2 114 53562 152.1 1451 1445 342.7
D 8 195 2689535 7359.82 1480 1442 365.2
D 2 250 388455 1059.62 1480 1442 365.2
D 12 233 256069 697.15 1480 1442 365.2

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