ASTROSAT CZTI

Data Quality Report

Orbit 16804

Creation date: 2024-06-27T17:27:49.739556
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/AS1A05_004T04_9000002494_16804cztM0_level2.evt modeM0/AS1A05_004T04_9000002494_16804cztM0_level2_quad_clean.evt
Size (bytes)684,633,60084,994,560
Size652.9 MB 81.1 MB
Events in quadrant A5,350,016534,017
Events in quadrant B3,658,663572,500
Events in quadrant C4,177,834535,354
Events in quadrant D7,120,442490,155

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201843
B0148612
C0165982
D0255362

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63266259.879861%
B63261672.639899%
C63261913.019285%
D6326117218.526715%

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 7597 6327 363 363 4.78% 5.74%
B 7597 6327 2 2 0.03% 0.03%
C 7597 6328 0 0 0.00% 0.00%
D 7597 6328 859 859 11.31% 13.57%

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 15 174 1859387 10930.41 859 844 170.0
A 9 143 140913 823.77 859 844 170.0
A 15 190 28499 162.64 859 844 170.0
B 15 35 180961 1101.12 871 851 163.6
B 0 229 32051 190.74 871 851 163.6
B 0 214 20561 120.5 871 851 163.6
C 3 233 797400 4206.65 821 828 189.4
C 14 238 130184 683.12 821 828 189.4
C 7 247 42303 219.03 821 828 189.4
D 1 52 3097889 16463.56 776 756 188.1
D 2 33 721666 3832.17 776 756 188.1
D 12 218 152371 805.95 776 756 188.1

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