ASTROSAT CZTI

Data Quality Report

Orbit 46865

Creation date: 2024-06-27T23:28:40.404397
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_46865cztM0_level2.fits modeM0/AS1A13_053T01_9000006274_46865cztM0_level2_quad_clean.evt
Size (bytes)461,448,00097,453,440
Size440.1 MB 92.9 MB
Events in quadrant A5,678,730663,640
Events in quadrant B3,334,027688,181
Events in quadrant C2,627,510657,077
Events in quadrant D4,991,030536,783

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0207673
B0137571
C0120251
D0187771

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57952364.072476%
B57951432.467645%
C5796681.173223%
D579677613.388544%

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 6955 5796 24 24 0.35% 0.41%
B 6955 5796 33 33 0.47% 0.57%
C 6956 5797 8 8 0.12% 0.14%
D 6956 5797 608 608 8.74% 10.49%

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 3026961 22013.58 666 651 137.5
A 7 3 38947 278.57 666 651 137.5
A 13 248 17110 119.72 666 651 137.5
B 3 112 574782 4481.95 662 643 128.1
B 5 173 66923 517.41 662 643 128.1
B 0 198 22924 173.93 662 643 128.1
C 14 254 63034 412.33 649 650 151.3
C 0 207 20724 132.68 649 650 151.3
C 1 241 13987 88.15 649 650 151.3
D 1 52 2085255 13374.94 622 601 155.9
D 13 249 242822 1554.07 622 601 155.9
D 11 192 163606 1045.82 622 601 155.9

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