ASTROSAT CZTI

Data Quality Report

Orbit 33812

Creation date: 2024-06-27T20:52:50.357671
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/AS1T04_077T01_9000004824_33812cztM0_level2.evt modeM0/AS1T04_077T01_9000004824_33812cztM0_level2_quad_clean.evt
Size (bytes)641,805,12051,373,440
Size612.1 MB 49.0 MB
Events in quadrant A2,917,343310,170
Events in quadrant B3,749,483299,313
Events in quadrant C3,358,988301,924
Events in quadrant D9,041,936260,447

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119333
B0145292
C0133222
D0306902

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5469270.493692%
B54692484.534650%
C5469881.609069%
D5469162229.658073%

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 7352 5470 14 14 0.19% 0.26%
B 7352 5470 170 170 2.31% 3.11%
C 7352 5470 76 76 1.03% 1.39%
D 7352 5470 1638 1638 22.28% 29.95%

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 15 169 137725 966.3 712 701 141.8
A 13 6 23121 158.11 712 701 141.8
A 10 83 10701 70.52 712 701 141.8
B 5 172 757841 5816.83 690 674 130.2
B 0 219 52700 399.68 690 674 130.2
B 4 81 50941 386.17 690 674 130.2
C 15 214 178952 1129.0 687 694 157.9
C 0 10 173920 1097.13 687 694 157.9
C 14 254 129717 817.17 687 694 157.9
D 12 235 3868816 25124.01 634 617 154.0
D 8 195 1217058 7900.8 634 617 154.0
D 13 249 569310 3693.67 634 617 154.0

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