ASTROSAT CZTI

Data Quality Report

Orbit 20693

Creation date: 2024-06-27T18:18:26.493896
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_229T02_9000003060_20693cztM0_level2.evt modeM0/AS1A05_229T02_9000003060_20693cztM0_level2_quad_clean.evt
Size (bytes)489,516,48072,817,920
Size466.8 MB 69.4 MB
Events in quadrant A3,191,165443,892
Events in quadrant B3,787,469436,323
Events in quadrant C3,277,967433,813
Events in quadrant D4,108,172418,372

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138572
B0156052
C0139212
D0168402

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6781510.752101%
B67811672.462764%
C6781811.194514%
D67812223.273853%

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 7701 6782 0 0 0.00% 0.00%
B 7701 6782 79 79 1.03% 1.16%
C 7701 6782 0 0 0.00% 0.00%
D 7701 6782 152 152 1.97% 2.24%

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 0 226 7050 37.19 830 814 167.7
A 3 137 6688 35.03 830 814 167.7
A 12 194 5885 30.24 830 814 167.7
B 7 220 401639 2553.71 821 801 157.0
B 0 197 136629 865.35 821 801 157.0
B 12 111 19198 117.21 821 801 157.0
C 14 238 124036 660.35 797 801 186.6
C 3 233 19640 100.95 797 801 186.6
C 7 247 18754 96.2 797 801 186.6
D 1 52 880035 4561.29 795 773 192.8
D 5 222 94906 488.33 795 773 192.8
D 2 234 29206 147.5 795 773 192.8

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