ASTROSAT CZTI

Data Quality Report

Orbit 28680

Creation date: 2024-06-27T19:54:52.163365
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_110T03_9000004114_28680cztM0_level2.evt modeM0/AS1A10_110T03_9000004114_28680cztM0_level2_quad_clean.evt
Size (bytes)767,136,96091,206,720
Size731.6 MB 87.0 MB
Events in quadrant A4,008,600562,629
Events in quadrant B4,231,636570,295
Events in quadrant C5,028,174545,418
Events in quadrant D9,413,782517,284

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171592
B0177822
C0202812
D0337982

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81501031.263804%
B81512843.484235%
C81514956.072874%
D815191811.262422%

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 8575 8152 0 0 0.00% 0.00%
B 8576 8151 0 0 0.00% 0.00%
C 8576 8151 1 1 0.01% 0.01%
D 8576 8152 825 825 9.62% 10.12%

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 15 174 29180 134.21 1031 1007 209.9
A 13 254 14814 65.77 1031 1007 209.9
A 3 137 10161 43.61 1031 1007 209.9
B 15 33 175959 888.95 1018 991 196.8
B 10 245 25889 126.5 1018 991 196.8
B 12 111 24386 118.86 1018 991 196.8
C 3 233 955016 4154.1 978 983 229.7
C 14 238 197066 853.79 978 983 229.7
C 14 254 64505 276.59 978 983 229.7
D 7 80 2578624 11044.37 970 941 233.4
D 8 195 1996257 8549.15 970 941 233.4
D 1 52 937728 4013.77 970 941 233.4

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