ASTROSAT CZTI

Data Quality Report

Orbit 27622

Creation date: 2024-06-27T19:42:17.548896
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/AS1T03_257T01_9000003976_27622cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27622cztM0_level2_quad_clean.evt
Size (bytes)604,779,84087,615,360
Size576.8 MB 83.6 MB
Events in quadrant A3,923,293536,485
Events in quadrant B4,844,993538,790
Events in quadrant C4,013,409519,066
Events in quadrant D4,990,324501,556

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168150
B0194620
C0169630
D0203720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80162513.131238%
B80174886.087065%
C80173153.929151%
D80172963.692154%

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 8896 8019 0 0 0.00% 0.00%
B 8897 8020 93 93 1.05% 1.16%
C 8897 8020 8 8 0.09% 0.10%
D 8897 8020 100 100 1.12% 1.25%

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 12 96 18219 84.95 1008 983 202.9
A 13 254 12342 55.98 1008 983 202.9
A 3 137 10268 45.76 1008 983 202.9
B 3 64 710850 3686.62 996 970 192.6
B 10 245 132466 682.9 996 970 192.6
B 15 32 43109 218.84 996 970 192.6
C 14 238 154761 670.6 970 974 229.3
C 2 16 65869 282.98 970 974 229.3
C 3 233 8691 33.65 970 974 229.3
D 7 80 640548 2735.86 972 942 233.8
D 1 52 495078 2113.62 972 942 233.8
D 2 250 133330 566.28 972 942 233.8

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