ASTROSAT CZTI

Data Quality Report

Orbit 44306

Creation date: 2024-06-27T23:01:53.922907
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_004T13_9000005988_44306cztM0_level2.fits modeM0/AS1A13_004T13_9000005988_44306cztM0_level2_quad_clean.evt
Size (bytes)659,275,200140,394,240
Size628.7 MB 133.9 MB
Events in quadrant A5,955,472954,302
Events in quadrant B5,444,730947,112
Events in quadrant C4,485,525938,160
Events in quadrant D7,833,258797,582

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0245460
B0222390
C0196791
D0295400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A88411631.843683%
B88424204.750057%
C88411091.232892%
D884196810.948988%

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 8841 8841 5 5 0.06% 0.06%
B 8842 8842 142 142 1.61% 1.61%
C 8841 8841 44 44 0.50% 0.50%
D 8841 8841 728 728 8.23% 8.23%

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 1914689 8913.9 1020 993 214.7
A 15 223 39038 177.21 1020 993 214.7
A 7 3 37508 170.09 1020 993 214.7
B 5 255 544760 2727.97 1008 975 199.3
B 5 172 359464 1798.41 1008 975 199.3
B 0 190 113113 562.55 1008 975 199.3
C 14 254 214540 894.18 1007 1009 238.8
C 9 54 89739 371.56 1007 1009 238.8
C 3 233 86170 356.62 1007 1009 238.8
D 13 249 1340339 5562.25 963 932 240.8
D 1 52 480027 1989.57 963 932 240.8
D 13 171 474859 1968.11 963 932 240.8

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