ASTROSAT CZTI

Data Quality Report

Orbit 04137

Creation date: 2024-06-27T14:39:50.681986
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/AS1G05_245T01_9000000532_04137cztM0_level2.evt modeM0/AS1G05_245T01_9000000532_04137cztM0_level2_quad_clean.evt
Size (bytes)468,374,40085,452,480
Size446.7 MB 81.5 MB
Events in quadrant A3,398,030539,829
Events in quadrant B3,488,495538,086
Events in quadrant C3,302,518529,867
Events in quadrant D3,538,607511,233

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142593
B0145562
C0140642
D0150412

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67321392.064765%
B67321462.168746%
C67321261.871658%
D67321652.450980%

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 8942 6734 1 1 0.01% 0.01%
B 8942 6733 0 0 0.00% 0.00%
C 8942 6733 0 0 0.00% 0.00%
D 8942 6733 30 30 0.34% 0.45%

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 3 1 20165 109.54 867 851 176.3
A 15 234 20077 109.04 867 851 176.3
A 13 14 19973 108.46 867 851 176.3
B 15 204 30173 176.04 872 854 166.5
B 10 16 23815 137.86 872 854 166.5
B 0 183 22022 127.1 872 854 166.5
C 10 65 12084 57.41 843 850 195.7
C 13 61 6874 30.79 843 850 195.7
C 3 202 1996 5.85 843 850 195.7
D 10 172 170189 849.34 836 813 199.4
D 13 239 90773 451.11 836 813 199.4
D 13 238 39342 193.2 836 813 199.4

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