ASTROSAT CZTI

Data Quality Report

Orbit 31782

Creation date: 2024-06-27T20:32:38.617752
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/AS1A10_109T01_9000004638_31782cztM0_level2.evt modeM0/AS1A10_109T01_9000004638_31782cztM0_level2_quad_clean.evt
Size (bytes)564,094,08075,651,840
Size538.0 MB 72.1 MB
Events in quadrant A3,887,618464,197
Events in quadrant B5,264,960464,170
Events in quadrant C3,609,867448,499
Events in quadrant D3,858,234437,428

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156882
B0206602
C0146822
D0159942

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133
B0143
C0143
D0141

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68321231.800351%
B68321101.610070%
C68321682.459016%
D6832701.024590%

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 7772 6833 33 33 0.42% 0.48%
B 7772 6833 1 1 0.01% 0.01%
C 7772 6833 14 14 0.18% 0.20%
D 7772 6833 20 20 0.26% 0.29%

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 0 13 507302 2901.81 873 859 174.5
A 13 254 12568 67.09 873 859 174.5
A 3 137 8758 45.26 873 859 174.5
B 6 159 1799027 10783.75 862 842 166.7
B 0 229 35247 206.33 862 842 166.7
B 0 183 26024 151.02 862 842 166.7
C 0 10 177542 896.83 833 840 197.0
C 14 238 133886 675.26 833 840 197.0
C 3 233 25615 125.74 833 840 197.0
D 8 195 508967 2551.28 840 818 199.2
D 2 250 101422 505.11 840 818 199.2
D 12 218 38761 190.5 840 818 199.2

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