ASTROSAT CZTI

Data Quality Report

Orbit 29136

Creation date: 2024-06-27T20:00:40.345195
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_099T01_9000004184_29136cztM0_level2.evt modeM0/AS1A10_099T01_9000004184_29136cztM0_level2_quad_clean.evt
Size (bytes)547,801,92067,273,920
Size522.4 MB 64.2 MB
Events in quadrant A3,573,086403,092
Events in quadrant B3,801,627406,780
Events in quadrant C3,652,883389,482
Events in quadrant D5,115,148377,038

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149933
B0155192
C0151072
D0198132

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6610741.119516%
B66101021.543116%
C66101271.921331%
D66104126.232980%

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 7850 6611 0 0 0.00% 0.00%
B 7850 6611 13 13 0.17% 0.20%
C 7850 6611 0 0 0.00% 0.00%
D 7850 6611 279 279 3.55% 4.22%

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 13 254 10641 53.48 925 909 182.0
A 3 137 8443 41.4 925 909 182.0
A 0 226 7997 38.95 925 909 182.0
B 10 246 148808 870.92 911 892 169.8
B 10 245 44569 257.17 911 892 169.8
B 0 190 22744 128.66 911 892 169.8
C 14 238 144468 708.72 880 892 202.6
C 3 233 51256 248.61 880 892 202.6
C 2 114 15814 73.66 880 892 202.6
D 1 52 1115223 5455.38 872 852 204.3
D 8 195 280501 1369.02 872 852 204.3
D 12 233 268009 1307.86 872 852 204.3

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