ASTROSAT CZTI

Data Quality Report

Orbit 27876

Creation date: 2024-06-27T19:45:27.983330
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_002T05_9000004024_27876cztM0_level2.evt modeM0/AS1A10_002T05_9000004024_27876cztM0_level2_quad_clean.evt
Size (bytes)509,400,00092,272,320
Size485.8 MB 88.0 MB
Events in quadrant A3,191,790619,944
Events in quadrant B3,277,090610,089
Events in quadrant C4,265,248570,545
Events in quadrant D4,277,181565,427

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132670
B0135250
C0167830
D0166750

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6132691.125245%
B6133801.304419%
C61332233.636067%
D61321832.984344%

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 7277 6132 0 0 0.00% 0.00%
B 7278 6133 0 0 0.00% 0.00%
C 7278 6133 25 25 0.34% 0.41%
D 7277 6132 127 127 1.75% 2.07%

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 11404 64.3 827 812 164.7
A 3 137 7582 41.1 827 812 164.7
A 0 226 7057 37.91 827 812 164.7
B 10 245 58116 374.35 808 789 153.1
B 0 190 43964 281.94 808 789 153.1
B 12 111 18096 113.02 808 789 153.1
C 3 233 1149528 6471.8 765 769 177.5
C 14 238 124288 695.87 765 769 177.5
C 15 208 8626 44.26 765 769 177.5
D 1 52 1107534 5971.68 785 767 185.3
D 2 250 139990 751.19 785 767 185.3
D 8 195 27150 142.35 785 767 185.3

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