ASTROSAT CZTI

Data Quality Report

Orbit 43675

Creation date: 2024-06-27T22:54:22.906350
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/AS1A12_018T01_9000005896_43675cztM0_level2.fits modeM0/AS1A12_018T01_9000005896_43675cztM0_level2_quad_clean.evt
Size (bytes)887,584,32092,419,200
Size846.5 MB 88.1 MB
Events in quadrant A9,042,642700,709
Events in quadrant B3,539,282719,420
Events in quadrant C13,103,051382,425
Events in quadrant D6,716,581581,403

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310471
B0143601
C0429854
D0240361

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A589167011.373281%
B58921332.257298%
C5891432673.434052%
D589196416.363945%

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 6991 5892 233 233 3.33% 3.95%
B 6992 5893 33 33 0.47% 0.56%
C 6991 5891 3962 3962 56.67% 67.26%
D 6991 5892 737 737 10.54% 12.51%

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 15 222 5084900 37530.01 668 657 135.5
A 10 83 791377 5836.8 668 657 135.5
A 0 50 232688 1712.77 668 657 135.5
B 0 230 202808 1561.5 674 654 129.5
B 4 206 197575 1521.08 674 654 129.5
B 4 171 176856 1361.04 674 654 129.5
C 15 142 7999719 88590.72 381 382 90.3
C 15 157 2384645 26405.13 381 382 90.3
C 15 158 1085328 12015.51 381 382 90.3
D 12 6 537437 3371.1 632 613 159.2
D 5 235 451778 2833.18 632 613 159.2
D 12 33 350726 2198.61 632 613 159.2

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