ASTROSAT CZTI

Data Quality Report

Orbit 03913

Creation date: 2024-06-27T14:35:10.420060
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_172T01_9000000502_03913cztM0_level2.evt modeM0/AS1G05_172T01_9000000502_03913cztM0_level2_quad_clean.evt
Size (bytes)519,762,24089,922,240
Size495.7 MB 85.8 MB
Events in quadrant A3,735,170552,717
Events in quadrant B4,063,229559,073
Events in quadrant C3,317,547554,538
Events in quadrant D4,112,811531,625

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01635214
B0170065
C0155487
D0177853

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75441702.253446%
B75481031.364600%
C7547410.543262%
D75492293.033514%

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 7565 7551 18 18 0.24% 0.24%
B 7565 7551 1 1 0.01% 0.01%
C 7565 7551 0 0 0.00% 0.00%
D 7565 7551 171 171 2.26% 2.26%

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 0 118 215640 1198.23 870 849 179.3
A 0 50 68182 375.62 870 849 179.3
A 0 226 28378 153.57 870 849 179.3
B 7 221 380683 2216.19 876 854 171.4
B 15 204 244068 1419.08 876 854 171.4
B 5 171 18543 103.21 876 854 171.4
C 10 65 11726 55.1 841 842 197.5
C 1 16 9298 42.81 841 842 197.5
C 13 61 7128 31.82 841 842 197.5
D 2 232 514272 2530.99 838 811 202.9
D 2 32 211666 1039.36 838 811 202.9
D 13 223 49053 237.8 838 811 202.9

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
Veto Counter