ASTROSAT CZTI

Data Quality Report

Orbit 08930

Creation date: 2024-06-27T15:39:06.826298
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/AS1A03_092T01_9000001240_08930cztM0_level2.evt modeM0/AS1A03_092T01_9000001240_08930cztM0_level2_quad_clean.evt
Size (bytes)491,299,20092,160,000
Size468.5 MB 87.9 MB
Events in quadrant A4,033,807589,771
Events in quadrant B3,199,155602,161
Events in quadrant C3,093,633590,116
Events in quadrant D4,127,816572,059

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160073
B0132962
C0132082
D0161742

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62661632.601341%
B6266971.548037%
C6266891.420364%
D62661322.106607%

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 7541 6266 45 45 0.60% 0.72%
B 7541 6266 0 0 0.00% 0.00%
C 7541 6266 0 0 0.00% 0.00%
D 7541 6266 27 27 0.36% 0.43%

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 8 5 816064 4970.93 816 801 164.0
A 15 174 46948 281.37 816 801 164.0
A 1 162 7503 40.86 816 801 164.0
B 0 214 17018 106.01 817 799 153.0
B 12 111 15834 98.27 817 799 153.0
B 11 111 12679 77.65 817 799 153.0
C 13 61 5897 28.26 793 797 180.5
C 3 202 2048 6.93 793 797 180.5
C 3 203 1758 5.33 793 797 180.5
D 1 52 643167 3310.62 793 775 194.0
D 8 195 228638 1174.31 793 775 194.0
D 2 14 77068 393.18 793 775 194.0

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