ASTROSAT CZTI

Data Quality Report

Orbit 33938

Creation date: 2024-06-27T20:54:20.242709
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/AS1A11_046T03_9000004848_33938cztM0_level2.evt modeM0/AS1A11_046T03_9000004848_33938cztM0_level2_quad_clean.evt
Size (bytes)892,356,480141,128,640
Size851.0 MB 134.6 MB
Events in quadrant A8,063,991864,015
Events in quadrant B5,481,001945,623
Events in quadrant C5,304,789933,371
Events in quadrant D7,524,223862,718

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021828
B021816
C021812
D021818

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0392
B0391
C0391
D0401

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0355785007
B0256662786
C0240712273
D0337074690

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9490105811.148577%
B97412752.823119%
C9757950.973660%
D95023483.662387%

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 13524 9977 731 731 5.41% 7.33%
B 13524 10199 161 161 1.19% 1.58%
C 13524 10235 68 68 0.50% 0.66%
D 13524 9995 220 220 1.63% 2.20%

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 15 169 3953831 18906.5 1044 1024 209.1
A 0 31 33506 155.36 1044 1024 209.1
A 10 83 18096 81.66 1044 1024 209.1
B 5 172 868312 4186.47 1093 1065 207.2
B 4 251 98610 470.88 1093 1065 207.2
B 0 229 45901 216.44 1093 1065 207.2
C 15 214 418452 1676.76 1074 1082 248.9
C 0 10 288456 1154.51 1074 1082 248.9
C 3 233 210189 840.08 1074 1082 248.9
D 8 195 1923120 6960.57 1031 1008 276.1
D 2 250 614757 2222.58 1031 1008 276.1
D 13 249 432821 1563.73 1031 1008 276.1

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