ASTROSAT CZTI

Data Quality Report

Orbit 04148

Creation date: 2024-06-27T14:38:02.886420
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/AS1G05_240T01_9000000536_04148cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04148cztM0_level2_quad_clean.evt
Size (bytes)1,180,301,760187,456,320
Size1.1 GB 178.8 MB
Events in quadrant A8,360,3091,122,882
Events in quadrant B8,494,5641,125,540
Events in quadrant C7,841,9841,122,659
Events in quadrant D9,834,0861,068,829

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03640
B03640
C03640
D03640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0371634
B0372203
C0363503
D0421623

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A179511580.880174%
B179511480.824467%
C17951790.440087%
D179514032.245000%

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 19976 17954 44 44 0.22% 0.25%
B 19976 17954 12 12 0.06% 0.07%
C 19976 17954 1 1 0.01% 0.01%
D 19976 17954 337 337 1.69% 1.88%

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 3 1 195033 459.22 2049 2003 420.3
A 15 174 99877 232.84 2049 2003 420.3
A 0 118 88284 205.26 2049 2003 420.3
B 15 204 142136 350.2 2068 2018 400.1
B 14 167 125289 308.09 2068 2018 400.1
B 10 16 102464 251.04 2068 2018 400.1
C 8 128 16524 31.14 1996 2002 466.3
C 13 61 16350 30.77 1996 2002 466.3
C 9 144 12790 23.14 1996 2002 466.3
D 2 232 1798607 3742.53 1985 1923 480.1
D 13 239 154056 316.9 1985 1923 480.1
D 13 53 117189 240.1 1985 1923 480.1

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