ASTROSAT CZTI

Data Quality Report

Orbit 21239

Creation date: 2024-06-27T18:25:19.046667
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/AS1A05_037T01_9000003140_21239cztM0_level2.evt modeM0/AS1A05_037T01_9000003140_21239cztM0_level2_quad_clean.evt
Size (bytes)706,222,08098,216,640
Size673.5 MB 93.7 MB
Events in quadrant A3,937,165639,389
Events in quadrant B3,913,464651,285
Events in quadrant C3,787,341634,167
Events in quadrant D9,214,837499,248

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168512
B0167412
C0164372
D0328172

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78951541.950602%
B78961511.912361%
C78961571.988349%
D7895183223.204560%

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 8376 7896 14 14 0.17% 0.18%
B 8377 7898 10 10 0.12% 0.13%
C 8377 7897 0 0 0.00% 0.00%
D 8376 7897 1628 1628 19.44% 20.62%

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 5 16 95577 478.23 969 949 197.9
A 12 96 46273 229.06 969 949 197.9
A 11 47 44745 221.34 969 949 197.9
B 0 190 42140 217.54 971 945 189.4
B 3 64 36681 188.72 971 945 189.4
B 12 111 22790 115.36 971 945 189.4
C 14 238 143525 647.32 932 936 220.3
C 13 61 6588 25.66 932 936 220.3
C 0 207 4829 17.67 932 936 220.3
D 1 239 3244722 16203.73 820 795 200.2
D 7 238 1429197 7135.0 820 795 200.2
D 13 153 680508 3395.23 820 795 200.2

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