ASTROSAT CZTI

Data Quality Report

Orbit 24482

Creation date: 2024-06-27T19:06:27.426757
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/AS1T03_183T01_9000003606_24482cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24482cztM0_level2_quad_clean.evt
Size (bytes)512,038,080126,679,680
Size488.3 MB 120.8 MB
Events in quadrant A3,530,811842,535
Events in quadrant B3,752,374861,493
Events in quadrant C3,581,167814,828
Events in quadrant D4,133,280795,945

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153611
B0160001
C0153161
D0173161

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7503620.826336%
B75031291.719312%
C75031041.386112%
D7504620.826226%

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 7818 7504 1 1 0.01% 0.01%
B 7818 7504 29 29 0.37% 0.39%
C 7818 7504 0 0 0.00% 0.00%
D 7819 7505 9 9 0.12% 0.12%

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 14 111 148829 837.34 876 854 176.7
A 13 254 10934 57.04 876 854 176.7
A 3 137 8252 41.86 876 854 176.7
B 3 64 155206 925.25 877 852 166.8
B 12 17 120121 714.94 877 852 166.8
B 0 219 25468 147.56 877 852 166.8
C 14 238 134575 673.52 848 852 198.5
C 7 247 102483 511.88 848 852 198.5
C 2 16 31900 156.38 848 852 198.5
D 8 195 470519 2287.15 850 824 205.4
D 1 52 376121 1827.48 850 824 205.4
D 9 35 64490 310.02 850 824 205.4

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