ASTROSAT CZTI

Data Quality Report

Orbit 46831

Creation date: 2024-06-27T23:28:12.754047
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/AS1C07_001T10_9000006272_46831cztM0_level2.fits modeM0/AS1C07_001T10_9000006272_46831cztM0_level2_quad_clean.evt
Size (bytes)744,137,280146,805,120
Size709.7 MB 140.0 MB
Events in quadrant A8,599,038964,787
Events in quadrant B7,573,526959,617
Events in quadrant C4,068,367989,339
Events in quadrant D6,561,662865,524

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01920
B01920
C01920
D01920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0317351
B0291871
C0196071
D0264892

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A96022292.384920%
B96037107.393523%
C9603430.447777%
D96025405.623828%

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 9652 9603 3 3 0.03% 0.03%
B 9653 9604 315 315 3.26% 3.28%
C 9653 9604 6 6 0.06% 0.06%
D 9653 9604 400 400 4.14% 4.16%

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 4532846 21195.34 1024 1001 213.8
A 9 191 58471 268.79 1024 1001 213.8
A 13 248 24547 110.12 1024 1001 213.8
B 3 112 3052126 15457.78 1006 975 197.4
B 15 36 132275 665.19 1006 975 197.4
B 4 171 86131 431.42 1006 975 197.4
C 14 254 61648 256.27 1011 1015 236.6
C 3 233 50455 208.96 1011 1015 236.6
C 13 61 6916 24.94 1011 1015 236.6
D 1 52 1063538 4309.06 987 956 246.6
D 9 49 495692 2006.29 987 956 246.6
D 13 249 405072 1638.8 987 956 246.6

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