ASTROSAT CZTI

Data Quality Report

Orbit 45726

Creation date: 2024-06-27T23:15:28.485130
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/AS1T05_183T01_9000006124_45726cztM0_level2.fits modeM0/AS1T05_183T01_9000006124_45726cztM0_level2_quad_clean.evt
Size (bytes)584,907,840127,707,840
Size557.8 MB 121.8 MB
Events in quadrant A7,055,294849,646
Events in quadrant B4,999,310857,241
Events in quadrant C3,838,668852,344
Events in quadrant D5,142,949755,006

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262990
B0201420
C0171380
D0208310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79401041.309824%
B79401942.443325%
C7940570.717884%
D79412863.601562%

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 7940 7940 20 20 0.25% 0.25%
B 7940 7940 71 71 0.89% 0.89%
C 7940 7940 54 54 0.68% 0.68%
D 7941 7941 228 228 2.87% 2.87%

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 10 83 3472353 18538.95 892 871 187.3
A 13 248 81568 430.95 892 871 187.3
A 14 235 17690 89.82 892 871 187.3
B 3 112 868378 5003.34 885 859 173.4
B 4 171 206909 1188.37 885 859 173.4
B 5 172 89322 510.2 885 859 173.4
C 14 254 214909 1039.46 876 884 205.9
C 2 14 91218 438.73 876 884 205.9
C 12 2 36944 175.13 876 884 205.9
D 1 52 487311 2230.64 862 838 218.1
D 2 249 480350 2198.72 862 838 218.1
D 13 249 343202 1569.85 862 838 218.1

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