ASTROSAT CZTI

Data Quality Report

Orbit 16740

Creation date: 2024-06-27T17:27:03.557591
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/AS1A05_202T01_9000002484_16740cztM0_level2.evt modeM0/AS1A05_202T01_9000002484_16740cztM0_level2_quad_clean.evt
Size (bytes)660,873,600114,497,280
Size630.3 MB 109.2 MB
Events in quadrant A5,060,416750,751
Events in quadrant B3,455,451796,828
Events in quadrant C3,396,238763,136
Events in quadrant D7,624,709664,789

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197172
B0149331
C0146391
D0274461

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70596519.222269%
B70591111.572461%
C7059881.246636%
D7059130118.430373%

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 7545 7061 511 511 6.77% 7.24%
B 7545 7061 20 20 0.27% 0.28%
C 7545 7061 3 3 0.04% 0.04%
D 7545 7061 936 936 12.41% 13.26%

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 2014582 12609.96 792 773 159.7
A 0 226 7067 39.41 792 773 159.7
A 12 194 5813 31.56 792 773 159.7
B 10 16 56049 352.37 822 803 156.8
B 15 35 54952 345.37 822 803 156.8
B 0 197 45059 282.27 822 803 156.8
C 0 207 165925 892.27 790 795 185.1
C 14 238 124319 667.45 790 795 185.1
C 7 247 20223 104.98 790 795 185.1
D 1 52 4551387 25925.92 721 700 175.5
D 2 16 145038 822.31 721 700 175.5
D 10 70 57601 324.17 721 700 175.5

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