ASTROSAT CZTI

Data Quality Report

Orbit 30172

Creation date: 2024-06-27T20:11:48.937322
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/AS1A10_021T06_9000004338_30172cztM0_level2.evt modeM0/AS1A10_021T06_9000004338_30172cztM0_level2_quad_clean.evt
Size (bytes)726,488,64092,016,000
Size692.8 MB 87.8 MB
Events in quadrant A4,362,420579,588
Events in quadrant B5,739,253581,682
Events in quadrant C6,824,269541,161
Events in quadrant D4,564,102556,939

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178161
B0228921
C0254131
D0183401

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75722773.658214%
B75722693.552562%
C757288811.727417%
D75722453.235605%

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 7932 7572 94 94 1.19% 1.24%
B 7932 7572 1 1 0.01% 0.01%
C 7932 7572 290 290 3.66% 3.83%
D 7932 7573 127 127 1.60% 1.68%

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 0 13 745435 3923.52 935 913 189.8
A 13 254 11791 57.33 935 913 189.8
A 3 137 9852 47.11 935 913 189.8
B 6 159 2059189 11400.2 925 899 180.5
B 12 111 22951 122.14 925 899 180.5
B 11 111 21226 112.58 925 899 180.5
C 3 233 3189855 15289.93 886 892 208.6
C 14 238 139732 665.69 886 892 208.6
C 15 208 26760 124.03 886 892 208.6
D 1 52 680701 3131.6 909 887 217.1
D 8 195 238108 1092.77 909 887 217.1
D 13 104 123696 565.73 909 887 217.1

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