ASTROSAT CZTI

Data Quality Report

Orbit 30849

Creation date: 2024-06-27T20:20:19.241717
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_071T40_9000004458_30849cztM0_level2.evt modeM0/AS1A10_071T40_9000004458_30849cztM0_level2_quad_clean.evt
Size (bytes)707,495,04079,663,680
Size674.7 MB 76.0 MB
Events in quadrant A3,352,930512,379
Events in quadrant B9,980,575470,181
Events in quadrant C3,515,772483,136
Events in quadrant D4,124,119478,221

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138531
B0343885
C0143161
D0166761

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67151131.682800%
B6714154623.026512%
C67151782.650782%
D67151121.667908%

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 7490 6715 0 0 0.00% 0.00%
B 7489 6714 704 704 9.40% 10.49%
C 7490 6715 10 10 0.13% 0.15%
D 7490 6715 25 25 0.33% 0.37%

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 12235 65.24 868 852 174.5
A 3 137 8679 44.86 868 852 174.5
A 0 226 7348 37.23 868 852 174.5
B 6 36 4852023 30670.15 816 795 158.2
B 6 159 1791193 11319.15 816 795 158.2
B 4 80 51290 319.24 816 795 158.2
C 14 238 132278 678.28 820 826 193.8
C 0 10 113129 579.47 820 826 193.8
C 2 16 35752 180.21 820 826 193.8
D 8 195 868228 4402.35 827 807 197.0
D 2 250 71608 359.33 827 807 197.0
D 2 234 27054 133.21 827 807 197.0

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