ASTROSAT CZTI

Data Quality Report

Orbit 35126

Creation date: 2022-03-28T13:20:56.219117
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_35126cztM0_level2.evt modeM0/AS1A11_047T09_9000005028_35126cztM0_level2_quad_clean.evt
Size (bytes)901,586,88058,962,240
Size859.8 MB 56.2 MB
Events in quadrant A12,801,336165,047
Events in quadrant B3,607,542422,783
Events in quadrant C3,307,837418,736
Events in quadrant D7,169,294343,127

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0421983
B0145582
C0132612
D0255972

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6210469475.587762%
B6210891.433172%
C6210260.418680%
D621096515.539452%

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 9195 6212 3934 3934 42.78% 63.33%
B 9195 6212 45 45 0.49% 0.72%
C 9195 6212 15 15 0.16% 0.24%
D 9195 6212 852 852 9.27% 13.72%

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 11033927 130086.63 420 411 84.8
A 10 83 63642 745.5 420 411 84.8
A 9 143 42546 496.78 420 411 84.8
B 5 172 531231 3731.87 735 715 142.2
B 0 190 113114 790.66 735 715 142.2
B 0 189 24523 167.48 735 715 142.2
C 15 214 264853 1567.12 720 727 168.5
C 0 10 127472 752.01 720 727 168.5
C 14 67 58695 343.94 720 727 168.5
D 8 195 2154100 12944.82 679 658 166.4
D 2 250 969368 5823.13 679 658 166.4
D 10 118 463700 2783.45 679 658 166.4

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