ASTROSAT CZTI

Data Quality Report

Orbit 51900

Creation date: 2025-05-03T05:07:16.996186
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/AS1C09_011T05_9000006466_51900cztM0_level2.fits modeM0/AS1C09_011T05_9000006466_51900cztM0_level2_quad_clean.evt
Size (bytes)735,799,68086,365,440
Size701.7 MB 82.4 MB
Events in quadrant A5,365,829592,510
Events in quadrant B3,850,124679,087
Events in quadrant C4,849,633595,834
Events in quadrant D12,665,807292,067

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205742
B0159788
C0188802
D0421452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65284566.985294%
B65281271.945466%
C65283415.223652%
D6528358254.871324%

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 7653 6529 374 374 4.89% 5.73%
B 7653 6529 57 57 0.74% 0.87%
C 7653 6529 242 242 3.16% 3.71%
D 7653 6529 3359 3359 43.89% 51.45%

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 15 174 1206206 7408.28 660 644 162.7
A 12 3 543259 3334.42 660 644 162.7
A 4 3 173983 1065.18 660 644 162.7
B 4 171 357099 2447.16 686 663 145.7
B 10 254 184305 1260.82 686 663 145.7
B 5 172 86003 585.91 686 663 145.7
C 14 245 657562 3525.14 670 663 186.3
C 10 171 389051 2084.22 670 663 186.3
C 15 248 264336 1414.96 670 663 186.3
D 6 42 8121824 50600.31 501 481 160.5
D 12 17 1008610 6281.18 501 481 160.5
D 3 12 466497 2903.53 501 481 160.5

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