ASTROSAT CZTI

Data Quality Report

Orbit 34977

Creation date: 2022-03-19T16:37:59.186550
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_123T09_9000005012_34977cztM0_level2.evt modeM0/AS1A10_123T09_9000005012_34977cztM0_level2_quad_clean.evt
Size (bytes)510,638,40075,153,600
Size487.0 MB 71.7 MB
Events in quadrant A2,749,284476,507
Events in quadrant B3,147,131486,520
Events in quadrant C3,002,967485,445
Events in quadrant D6,166,997416,820

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121853
B0133512
C0125822
D0224252

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5872200.340599%
B58721282.179837%
C5872550.936649%
D5872103917.694142%

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 8828 5874 11 11 0.12% 0.19%
B 8828 5874 94 94 1.06% 1.60%
C 8828 5874 52 52 0.59% 0.89%
D 8828 5874 890 890 10.08% 15.15%

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 15 223 84770 630.0 661 645 133.5
A 10 83 74239 551.13 661 645 133.5
A 13 6 22231 161.65 661 645 133.5
B 5 172 380503 3020.98 653 635 125.7
B 0 190 89951 710.3 653 635 125.7
B 4 232 42961 336.6 653 635 125.7
C 15 214 245948 1637.03 643 648 149.8
C 0 10 206654 1374.79 643 648 149.8
C 14 67 33717 220.69 643 648 149.8
D 2 249 1708745 11848.77 592 576 144.2
D 8 195 766932 5315.86 592 576 144.2
D 10 118 695786 4822.35 592 576 144.2

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