ASTROSAT CZTI

Data Quality Report

Orbit 04079

Creation date: 2024-06-27T14:37:06.438486
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/AS1G05_222T01_9000000520_04079cztM0_level2.evt modeM0/AS1G05_222T01_9000000520_04079cztM0_level2_quad_clean.evt
Size (bytes)431,968,32056,286,720
Size412.0 MB 53.7 MB
Events in quadrant A3,163,354322,561
Events in quadrant B3,288,575322,894
Events in quadrant C3,063,619313,605
Events in quadrant D3,138,967305,781

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135783
B0138992
C0133272
D0137402

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6290741.176471%
B6290741.176471%
C6290480.763116%
D6290560.890302%

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 7475 6290 26 26 0.35% 0.41%
B 7475 6290 25 25 0.33% 0.40%
C 7475 6290 23 23 0.31% 0.37%
D 7475 6291 39 39 0.52% 0.62%

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 50 100139 636.79 766 748 156.1
A 0 118 96328 612.38 766 748 156.1
A 0 226 16560 101.3 766 748 156.1
B 10 16 73524 491.74 776 759 148.0
B 14 167 72871 487.33 776 759 148.0
B 15 54 52697 350.99 776 759 148.0
C 9 144 174799 1013.2 739 742 171.8
C 13 61 6210 31.83 739 742 171.8
C 12 4 3366 15.27 739 742 171.8
D 13 53 117606 652.86 740 719 179.0
D 2 232 72931 403.33 740 719 179.0
D 10 172 59765 329.79 740 719 179.0

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