ASTROSAT CZTI

Data Quality Report

Orbit 22627

Creation date: 2024-06-27T18:43:46.812829
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/AS1A07_112T01_9000003360_22627cztM0_level2.evt modeM0/AS1A07_112T01_9000003360_22627cztM0_level2_quad_clean.evt
Size (bytes)611,550,72084,847,680
Size583.2 MB 80.9 MB
Events in quadrant A3,391,090531,500
Events in quadrant B3,602,239531,390
Events in quadrant C3,505,242523,727
Events in quadrant D7,543,428490,851

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145682
B0151542
C0147742
D0272854

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7058500.708416%
B70581131.601020%
C70581422.011901%
D7057142620.206887%

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 7683 7059 0 0 0.00% 0.00%
B 7683 7059 40 40 0.52% 0.57%
C 7683 7059 1 1 0.01% 0.01%
D 7682 7058 826 826 10.75% 11.70%

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 12362 64.87 877 857 177.4
A 11 47 8855 45.1 877 857 177.4
A 3 137 7533 37.64 877 857 177.4
B 10 247 139662 847.12 866 843 163.9
B 12 111 19575 114.31 866 843 163.9
B 4 173 18907 110.23 866 843 163.9
C 14 238 134964 683.22 843 850 196.3
C 0 10 32587 161.68 843 850 196.3
C 9 54 29019 143.5 843 850 196.3
D 1 239 3678244 19527.08 779 757 188.3
D 1 52 728807 3865.87 779 757 188.3
D 10 230 58769 308.04 779 757 188.3

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