ASTROSAT CZTI

Data Quality Report

Orbit 15785

Creation date: 2024-06-27T17:13:22.340753
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/AS1A04_100T01_9000002336_15785cztM0_level2.evt modeM0/AS1A04_100T01_9000002336_15785cztM0_level2_quad_clean.evt
Size (bytes)1,191,182,400211,806,720
Size1.1 GB 202.0 MB
Events in quadrant A8,520,7191,288,215
Events in quadrant B9,297,3351,309,550
Events in quadrant C8,478,6391,289,503
Events in quadrant D8,539,2361,265,603

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0377004
B0391743
C0372263
D0380033

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A183082701.474765%
B183083191.742408%
C183083101.693249%
D183082401.310902%

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 20109 18312 4 4 0.02% 0.02%
B 20109 18312 37 37 0.18% 0.20%
C 20109 18312 1 1 0.00% 0.01%
D 20109 18312 24 24 0.12% 0.13%

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 15 239 178160 402.85 2163 2110 437.0
A 0 226 19296 39.33 2163 2110 437.0
A 12 194 16509 32.95 2163 2110 437.0
B 7 220 208327 500.13 2166 2111 412.3
B 3 209 131593 314.03 2166 2111 412.3
B 3 64 90745 214.96 2166 2111 412.3
C 14 238 318161 650.93 2078 2082 485.6
C 3 233 28741 54.9 2078 2082 485.6
C 10 22 22883 42.84 2078 2082 485.6
D 1 52 123418 231.84 2115 2043 523.5
D 10 70 103952 194.66 2115 2043 523.5
D 2 152 97160 181.69 2115 2043 523.5

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