ASTROSAT CZTI

Data Quality Report

Orbit 34654

Creation date: 2022-02-24T14:40:03.246532
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/AS1T05_008T01_9000004956_34654cztM0_level2.evt modeM0/AS1T05_008T01_9000004956_34654cztM0_level2_quad_clean.evt
Size (bytes)421,283,52062,789,760
Size401.8 MB 59.9 MB
Events in quadrant A2,623,320399,415
Events in quadrant B2,830,918399,736
Events in quadrant C2,895,200384,736
Events in quadrant D4,071,993368,760

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104953
B0112172
C0112752
D0157182

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4972250.502816%
B4972290.583266%
C4972681.367659%
D4972871.749799%

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 7065 4973 14 14 0.20% 0.28%
B 7065 4973 19 19 0.27% 0.38%
C 7065 4973 56 56 0.79% 1.13%
D 7065 4973 56 56 0.79% 1.13%

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 46788 360.4 648 637 128.1
A 10 83 45391 349.49 648 637 128.1
A 9 143 16352 122.72 648 637 128.1
B 5 172 216323 1799.97 634 620 119.8
B 4 171 47961 395.05 634 620 119.8
B 4 232 29725 242.87 634 620 119.8
C 0 10 220850 1581.06 608 612 139.3
C 15 214 215196 1540.47 608 612 139.3
C 14 67 77047 548.72 608 612 139.3
D 8 195 1178156 7779.67 620 602 151.4
D 2 250 135711 892.62 620 602 151.4
D 12 235 90691 595.18 620 602 151.4

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