ASTROSAT CZTI

Data Quality Report

Orbit 21938

Creation date: 2024-06-27T18:34:12.965969
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_100T03_9000003242_21938cztM0_level2.evt modeM0/AS1A07_100T03_9000003242_21938cztM0_level2_quad_clean.evt
Size (bytes)537,575,040122,941,440
Size512.7 MB 117.2 MB
Events in quadrant A3,030,957840,854
Events in quadrant B3,226,729845,441
Events in quadrant C3,108,686815,986
Events in quadrant D6,469,009763,405

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132861
B0137772
C0134841
D0237461

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6561360.548697%
B6561791.204085%
C6561570.868770%
D656170210.699588%

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 7496 6561 0 0 0.00% 0.00%
B 7496 6561 21 21 0.28% 0.32%
C 7496 6561 1 1 0.01% 0.02%
D 7496 6561 721 721 9.62% 10.99%

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 11271 66.18 783 768 158.7
A 3 1 7679 43.55 783 768 158.7
A 0 226 6762 37.77 783 768 158.7
B 3 64 126367 856.79 773 754 146.6
B 0 190 18164 118.75 773 754 146.6
B 0 229 18021 117.78 773 754 146.6
C 14 238 118452 680.35 742 744 173.0
C 5 4 59441 339.27 742 744 173.0
C 10 22 39646 224.85 742 744 173.0
D 12 235 2284676 12846.99 734 711 177.8
D 7 238 785195 4412.61 734 711 177.8
D 1 52 386790 2171.64 734 711 177.8

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