ASTROSAT CZTI

Data Quality Report

Orbit 52215

Creation date: 2025-06-19T18:09:07.254212
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/AS1C09_011T08_9000006472_52215cztM0_level2.fits modeM0/AS1C09_011T08_9000006472_52215cztM0_level2_quad_clean.evt
Size (bytes)2,679,998,400190,425,600
Size2.5 GB 181.6 MB
Events in quadrant A13,949,9931,500,975
Events in quadrant B22,479,1901,375,505
Events in quadrant C22,982,1161,108,309
Events in quadrant D38,414,258540,510

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0561331934
B0854086137
C0836772798
D01330516614

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A038517
B038113
C038515
D038417

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1804115668.680228%
B17884407822.802505%
C18003543630.194968%
D178891206567.443680%

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 20354 18123 1241 1241 6.10% 6.85%
B 20354 17963 3194 3194 15.69% 17.78%
C 20354 18094 4413 4413 21.68% 24.39%
D 20353 17935 11634 11634 57.16% 64.87%

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 14 254 2656676 5799.96 1828 1781 457.7
A 4 249 1638183 3574.93 1828 1781 457.7
A 12 3 1190474 2596.85 1828 1781 457.7
B 10 254 8026683 22162.88 1721 1660 362.1
B 12 32 2793790 7711.09 1721 1660 362.1
B 5 32 2075485 5727.33 1721 1660 362.1
C 15 224 10688652 25882.43 1488 1474 412.9
C 13 3 2506069 6065.68 1488 1474 412.9
C 15 177 978871 2367.08 1488 1474 412.9
D 6 42 15233803 46053.09 1165 1113 330.8
D 12 17 8416560 25442.48 1165 1113 330.8
D 15 93 3414312 10319.15 1165 1113 330.8

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