ASTROSAT CZTI

Data Quality Report

Orbit 25418

Creation date: 2024-06-27T19:17:26.651954
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_047T01_9000003714_25418cztM0_level2.evt modeM0/AS1A09_047T01_9000003714_25418cztM0_level2_quad_clean.evt
Size (bytes)557,268,480124,004,160
Size531.5 MB 118.3 MB
Events in quadrant A3,906,212856,033
Events in quadrant B3,533,479858,646
Events in quadrant C3,600,829815,023
Events in quadrant D5,413,337789,941

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157240
B0144800
C0148630
D0207000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6247931.488715%
B6247711.136546%
C62471262.016968%
D62473625.794781%

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 7616 6246 13 13 0.17% 0.21%
B 7617 6248 2 2 0.03% 0.03%
C 7617 6248 1 1 0.01% 0.02%
D 7617 6247 304 304 3.99% 4.87%

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 385945 2180.69 902 887 176.6
A 4 2 42352 234.83 902 887 176.6
A 13 254 9056 46.26 902 887 176.6
B 0 229 44861 271.32 875 855 162.2
B 3 112 32167 193.05 875 855 162.2
B 0 190 26703 159.36 875 855 162.2
C 14 238 140798 718.5 851 860 194.8
C 7 247 113862 580.2 851 860 194.8
C 2 16 23054 113.95 851 860 194.8
D 1 52 946654 4558.21 868 846 207.5
D 12 233 549662 2644.95 868 846 207.5
D 8 195 499789 2404.6 868 846 207.5

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