ASTROSAT CZTI

Data Quality Report

Orbit 33603

Creation date: 2024-06-27T20:50:41.895615
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/AS1T04_076T01_9000004810_33603cztM0_level2.evt modeM0/AS1T04_076T01_9000004810_33603cztM0_level2_quad_clean.evt
Size (bytes)82,926,72018,990,720
Size79.1 MB 18.1 MB
Events in quadrant A475,285125,044
Events in quadrant B539,361128,317
Events in quadrant C638,359123,921
Events in quadrant D785,085117,926

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021281
B022710
C024950
D030770

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A103660.579151%
B1036161.544402%
C1036302.895753%
D1036343.281853%

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 1036 1036 3 3 0.29% 0.29%
B 1036 1036 14 14 1.35% 1.35%
C 1036 1036 31 31 2.99% 2.99%
D 1036 1036 32 32 3.09% 3.09%

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 15 169 16890 654.98 117 115 25.6
A 10 83 2733 102.22 117 115 25.6
A 13 254 1283 45.6 117 115 25.6
B 5 172 54512 2176.81 115 112 25.0
B 15 222 19630 781.01 115 112 25.0
B 0 246 6477 254.69 115 112 25.0
C 0 10 86107 3094.77 112 112 27.8
C 3 233 63987 2298.72 112 112 27.8
C 15 214 48152 1728.85 112 112 27.8
D 8 195 158056 5313.47 112 109 29.7
D 2 250 110853 3725.52 112 109 29.7
D 2 120 35149 1178.78 112 109 29.7

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