ASTROSAT CZTI

Data Quality Report

Orbit 35131

Creation date: 2022-03-28T20:27:26.385825
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/AS1A11_047T09_9000005028_35131cztM0_level2.evt modeM0/AS1A11_047T09_9000005028_35131cztM0_level2_quad_clean.evt
Size (bytes)689,587,200102,651,840
Size657.6 MB 97.9 MB
Events in quadrant A7,092,326635,472
Events in quadrant B3,906,254729,488
Events in quadrant C3,321,117714,201
Events in quadrant D6,205,515655,772

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247483
B0150912
C0131482
D0222502

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5322164730.947012%
B53222494.678692%
C53221001.878993%
D53224057.609921%

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 7385 5323 1169 1169 15.83% 21.96%
B 7385 5323 164 164 2.22% 3.08%
C 7385 5323 65 65 0.88% 1.22%
D 7385 5323 402 402 5.44% 7.55%

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 15 169 4572287 36877.99 630 622 124.0
A 10 83 61969 494.86 630 622 124.0
A 12 16 14229 109.76 630 622 124.0
B 5 172 722765 5554.11 693 678 130.0
B 0 190 125415 959.45 693 678 130.0
B 0 182 104262 796.74 693 678 130.0
C 0 10 257783 1653.76 679 686 155.5
C 15 214 225805 1448.07 679 686 155.5
C 1 23 104821 669.84 679 686 155.5
D 8 195 2215619 13385.51 683 666 165.5
D 2 250 320021 1929.94 683 666 165.5
D 10 118 288264 1738.03 683 666 165.5

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