ASTROSAT CZTI

Data Quality Report

Orbit 15666

Creation date: 2024-06-27T17:11:51.119689
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/AS1T02_084T01_9000002318_15666cztM0_level2.evt modeM0/AS1T02_084T01_9000002318_15666cztM0_level2_quad_clean.evt
Size (bytes)613,935,360100,175,040
Size585.5 MB 95.5 MB
Events in quadrant A3,543,909648,380
Events in quadrant B6,720,479614,345
Events in quadrant C3,479,652640,020
Events in quadrant D4,358,775626,995

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151762
B0247141
C0149451
D0176701

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7227971.342189%
B7227107014.805590%
C72271231.701951%
D72271592.200083%

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 7458 7229 0 0 0.00% 0.00%
B 7458 7229 782 782 10.49% 10.82%
C 7458 7229 1 1 0.01% 0.01%
D 7458 7229 140 140 1.88% 1.94%

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 80 164189 931.69 870 852 175.3
A 15 157 27339 151.08 870 852 175.3
A 0 226 7684 38.97 870 852 175.3
B 5 65 3355793 20963.67 832 810 160.0
B 3 209 35274 215.35 832 810 160.0
B 0 189 23754 143.37 832 810 160.0
C 14 238 129030 658.03 830 835 194.8
C 3 233 103951 529.3 830 835 194.8
C 10 187 8282 38.23 830 835 194.8
D 1 52 981599 4426.44 838 820 221.6
D 10 40 48619 215.73 838 820 221.6
D 13 172 45228 200.42 838 820 221.6

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