ASTROSAT CZTI

Data Quality Report

Orbit 19545

Creation date: 2024-06-27T18:04:12.612346
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/AS1A05_142T01_9000002904_19545cztM0_level2.evt modeM0/AS1A05_142T01_9000002904_19545cztM0_level2_quad_clean.evt
Size (bytes)566,464,32088,666,560
Size540.2 MB 84.6 MB
Events in quadrant A3,969,362538,717
Events in quadrant B4,113,849541,877
Events in quadrant C4,206,209523,438
Events in quadrant D4,317,426519,317

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169822
B0173001
C0173811
D0179871

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80792032.512687%
B80792563.168709%
C80792923.614309%
D80791972.438421%

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 8794 8080 1 1 0.01% 0.01%
B 8794 8081 8 8 0.09% 0.10%
C 8794 8080 0 0 0.00% 0.00%
D 8794 8080 23 23 0.26% 0.28%

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 5 16 23284 107.0 1023 1000 208.3
A 13 254 12126 53.43 1023 1000 208.3
A 0 226 8899 37.93 1023 1000 208.3
B 0 197 62506 311.54 1011 983 197.5
B 0 230 32287 158.52 1011 983 197.5
B 12 111 24295 118.05 1011 983 197.5
C 3 233 245035 1064.96 970 975 229.2
C 14 238 148832 645.17 970 975 229.2
C 7 247 26227 110.19 970 975 229.2
D 1 52 500835 2031.18 1000 970 246.1
D 2 234 31500 124.06 1000 970 246.1
D 7 96 28466 111.73 1000 970 246.1

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