ASTROSAT CZTI

Data Quality Report

Orbit 47180

Creation date: 2024-06-27T23:32:32.454888
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/AS1C09_003T01_9000006298_47180cztM0_level2.fits modeM0/AS1C09_003T01_9000006298_47180cztM0_level2_quad_clean.evt
Size (bytes)505,272,960109,448,640
Size481.9 MB 104.4 MB
Events in quadrant A7,032,596719,656
Events in quadrant B3,669,737746,566
Events in quadrant C3,558,747693,356
Events in quadrant D3,905,466671,976

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254201
B0157071
C0158081
D0167782

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69213394.898136%
B69221422.051430%
C69222934.232881%
D6921941.358185%

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 7796 6922 55 55 0.71% 0.79%
B 7797 6922 70 70 0.90% 1.01%
C 7797 6923 170 170 2.18% 2.46%
D 7796 6922 46 46 0.59% 0.66%

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 4036824 25496.36 758 741 158.3
A 13 248 22953 140.32 758 741 158.3
A 9 191 14711 88.25 758 741 158.3
B 0 190 221465 1467.31 763 739 150.4
B 0 200 115488 762.81 763 739 150.4
B 4 21 93856 619.01 763 739 150.4
C 15 208 550995 3114.09 748 751 176.7
C 14 254 73601 412.29 748 751 176.7
C 12 2 7245 36.75 748 751 176.7
D 1 47 447928 2341.15 755 732 191.0
D 8 176 185322 966.36 755 732 191.0
D 1 232 94584 491.33 755 732 191.0

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