ASTROSAT CZTI

Data Quality Report

Orbit 41451

Creation date: 2024-06-27T22:29:14.809094
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/AS1T05_100T01_9000005668_41451cztM0_level2.fits modeM0/AS1T05_100T01_9000005668_41451cztM0_level2_quad_clean.evt
Size (bytes)322,260,48083,868,480
Size307.3 MB 80.0 MB
Events in quadrant A3,072,731558,118
Events in quadrant B2,447,635581,587
Events in quadrant C2,970,007535,529
Events in quadrant D3,020,065487,750

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0271
B0271
C0271
D0271

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01277
B012812
C012913
D013022

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143652091
B0126471679
C0139351867
D0149382121

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5326280.525723%
B537080.148976%
C53831773.288129%
D53401923.595506%

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 8965 5683 15 15 0.17% 0.26%
B 8965 5704 1 1 0.01% 0.02%
C 8965 5709 170 170 1.90% 2.98%
D 8965 5689 167 167 1.86% 2.94%

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 10 83 505640 4119.67 591 577 122.6
A 13 248 255827 2082.01 591 577 122.6
A 2 79 21920 174.09 591 577 122.6
B 5 255 44486 376.62 593 576 116.6
B 0 190 41088 347.48 593 576 116.6
B 0 186 22694 189.71 593 576 116.6
C 0 10 514182 3819.65 572 576 134.5
C 15 214 223493 1657.82 572 576 134.5
C 12 249 4978 32.74 572 576 134.5
D 13 249 686190 4915.69 567 550 139.5
D 1 47 88526 630.74 567 550 139.5
D 2 249 29531 207.78 567 550 139.5

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