ASTROSAT CZTI

Data Quality Report

Orbit 45449

Creation date: 2024-06-27T23:12:26.174863
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/AS1A13_041T15_9000006086_45449cztM0_level2.fits modeM0/AS1A13_041T15_9000006086_45449cztM0_level2_quad_clean.evt
Size (bytes)536,544,000121,213,440
Size511.7 MB 115.6 MB
Events in quadrant A6,429,066797,071
Events in quadrant B4,000,663828,533
Events in quadrant C3,653,616799,709
Events in quadrant D5,180,676709,808

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0245013
B0170842
C0165822
D0207782

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76942963.847154%
B76952302.988954%
C76951341.741391%
D76953534.587394%

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 7849 7695 27 27 0.34% 0.35%
B 7850 7696 25 25 0.32% 0.32%
C 7850 7696 17 17 0.22% 0.22%
D 7850 7696 195 195 2.48% 2.53%

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 2931223 16086.7 873 852 182.2
A 13 248 82062 445.81 873 852 182.2
A 0 243 20910 110.11 873 852 182.2
B 0 171 163169 913.64 883 854 177.7
B 5 172 104297 582.26 883 854 177.7
B 0 199 51243 283.63 883 854 177.7
C 12 2 129116 611.94 875 879 209.6
C 14 96 52613 246.87 875 879 209.6
C 1 3 23601 108.43 875 879 209.6
D 11 241 653797 2977.33 859 833 219.3
D 1 52 350191 1592.98 859 833 219.3
D 2 249 331914 1509.64 859 833 219.3

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