ASTROSAT CZTI

Data Quality Report

Orbit 13494

Creation date: 2024-06-27T16:41:39.781497
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/AS1A04_103T01_9000001988_13494cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13494cztM0_level2_quad_clean.evt
Size (bytes)498,853,440101,649,600
Size475.7 MB 96.9 MB
Events in quadrant A3,540,056645,931
Events in quadrant B3,691,418656,971
Events in quadrant C3,495,185644,058
Events in quadrant D3,876,315614,322

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155852
B0159271
C0153701
D0165581

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7426580.781040%
B74261081.454350%
C7426370.498249%
D7426370.498249%

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 7692 7428 0 0 0.00% 0.00%
B 7692 7427 22 22 0.29% 0.30%
C 7692 7428 2 2 0.03% 0.03%
D 7692 7428 63 63 0.82% 0.85%

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 8 15 136557 749.06 879 860 181.2
A 1 162 17019 89.2 879 860 181.2
A 0 226 7722 37.88 879 860 181.2
B 10 245 109930 645.19 883 860 169.1
B 3 64 50267 292.26 883 860 169.1
B 4 173 27938 160.18 883 860 169.1
C 3 233 110839 552.55 854 857 199.0
C 0 207 54878 271.4 854 857 199.0
C 13 61 6335 27.52 854 857 199.0
D 7 223 292051 1432.14 843 819 203.4
D 8 195 178434 873.42 843 819 203.4
D 13 249 128735 629.03 843 819 203.4

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