ASTROSAT CZTI

Data Quality Report

Orbit 46396

Creation date: 2024-06-27T23:22:40.236995
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_070T04_9000006204_46396cztM0_level2.fits modeM0/AS1A13_070T04_9000006204_46396cztM0_level2_quad_clean.evt
Size (bytes)1,288,448,640278,994,240
Size1.2 GB 266.1 MB
Events in quadrant A17,884,5671,764,275
Events in quadrant B8,866,0211,928,242
Events in quadrant C8,487,8271,857,727
Events in quadrant D11,070,4211,660,987

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03640
B03640
C03640
D03640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0656122
B0392412
C0386962
D0459792

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1792411826.594510%
B179243351.869002%
C179241750.976345%
D179256423.581590%

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 18594 17926 844 844 4.54% 4.71%
B 18594 17926 102 102 0.55% 0.57%
C 18594 17926 87 87 0.47% 0.49%
D 18595 17927 392 392 2.11% 2.19%

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 8022699 19911.99 1936 1896 402.8
A 0 247 2079002 5156.51 1936 1896 402.8
A 0 226 132099 323.23 1936 1896 402.8
B 5 172 464869 1198.35 1972 1908 386.3
B 0 190 147028 375.64 1972 1908 386.3
B 15 201 143289 365.96 1972 1908 386.3
C 12 2 492577 1080.07 1947 1955 454.3
C 3 233 235023 513.08 1947 1955 454.3
C 14 254 124122 268.94 1947 1955 454.3
D 1 52 1376654 2855.99 1922 1859 481.4
D 11 224 695888 1441.77 1922 1859 481.4
D 13 249 402224 831.71 1922 1859 481.4

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