ASTROSAT CZTI

Data Quality Report

Orbit 24640

Creation date: 2024-06-27T19:08:14.357487
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/AS1C05_012T06_9000003616_24640cztM0_level2.evt modeM0/AS1C05_012T06_9000003616_24640cztM0_level2_quad_clean.evt
Size (bytes)586,465,920141,963,840
Size559.3 MB 135.4 MB
Events in quadrant A4,077,372960,908
Events in quadrant B3,608,516977,374
Events in quadrant C4,552,583930,121
Events in quadrant D5,019,640914,722

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170432
B0156472
C0182562
D0199352

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7427881.184866%
B7427460.619362%
C74272813.783493%
D74271922.585162%

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 7792 7428 27 27 0.35% 0.36%
B 7792 7428 10 10 0.13% 0.13%
C 7792 7428 49 49 0.63% 0.66%
D 7792 7428 172 172 2.21% 2.32%

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 6 16 582812 3276.52 889 870 177.6
A 15 223 46578 257.35 889 870 177.6
A 13 254 13886 73.28 889 870 177.6
B 5 172 64825 383.79 888 864 166.7
B 0 190 33488 195.76 888 864 166.7
B 12 111 20529 118.0 888 864 166.7
C 7 247 676198 3386.95 858 864 199.4
C 2 16 263835 1318.86 858 864 199.4
C 14 238 138098 688.26 858 864 199.4
D 8 195 866027 4112.55 868 842 210.4
D 7 238 597698 2837.08 868 842 210.4
D 1 52 156078 737.9 868 842 210.4

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