ASTROSAT CZTI

Data Quality Report

Orbit 46855

Creation date: 2024-06-27T23:28:33.207748
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/AS1A13_053T01_9000006274_46855cztM0_level2.fits modeM0/AS1A13_053T01_9000006274_46855cztM0_level2_quad_clean.evt
Size (bytes)496,229,760114,851,520
Size473.2 MB 109.5 MB
Events in quadrant A6,589,388759,334
Events in quadrant B3,827,639786,282
Events in quadrant C3,200,911750,170
Events in quadrant D4,189,713678,648

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240351
B0163721
C0150291
D0178141

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72262944.068641%
B72271952.698215%
C7227951.314515%
D72273194.414003%

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 7446 7227 3 3 0.04% 0.04%
B 7447 7228 19 19 0.26% 0.26%
C 7447 7228 16 16 0.21% 0.22%
D 7447 7228 202 202 2.71% 2.79%

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 3434327 20722.37 801 784 165.7
A 4 0 16875 97.11 801 784 165.7
A 13 248 12168 68.71 801 784 165.7
B 3 112 487584 3014.98 802 774 161.5
B 0 200 71170 435.99 802 774 161.5
B 0 198 30309 182.92 802 774 161.5
C 14 254 70332 373.79 790 792 186.0
C 12 250 24886 129.51 790 792 186.0
C 12 249 9194 45.16 790 792 186.0
D 13 249 724416 3686.57 782 756 196.3
D 1 52 342276 1739.82 782 756 196.3
D 2 234 35413 176.55 782 756 196.3

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