ASTROSAT CZTI

Data Quality Report

Orbit 25474

Creation date: 2024-06-27T19:18:03.982491
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/AS1A09_085T02_9000003716_25474cztM0_level2.evt modeM0/AS1A09_085T02_9000003716_25474cztM0_level2_quad_clean.evt
Size (bytes)505,356,48092,096,640
Size481.9 MB 87.8 MB
Events in quadrant A3,587,493593,042
Events in quadrant B3,558,869602,268
Events in quadrant C3,605,978576,413
Events in quadrant D4,110,369562,819

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147880
B0146520
C0148240
D0162710

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6512701.074939%
B6512931.428133%
C65121472.257371%
D65121201.842752%

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 7777 6513 0 0 0.00% 0.00%
B 7777 6513 0 0 0.00% 0.00%
C 7777 6513 0 0 0.00% 0.00%
D 7777 6513 52 52 0.67% 0.80%

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 6 16 42835 232.33 920 904 180.5
A 13 254 9016 44.95 920 904 180.5
A 0 226 7982 39.22 920 904 180.5
B 12 111 20016 114.78 906 885 166.7
B 11 111 18332 104.68 906 885 166.7
B 14 111 17310 98.55 906 885 166.7
C 14 238 144072 704.8 884 892 203.2
C 0 10 9426 42.01 884 892 203.2
C 2 16 6653 28.36 884 892 203.2
D 1 52 481385 2264.39 893 871 212.2
D 2 82 127480 596.64 893 871 212.2
D 8 195 112017 523.77 893 871 212.2

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