ASTROSAT CZTI

Data Quality Report

Orbit 31473

Creation date: 2024-06-27T20:28:58.866751
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/AS1T04_029T01_9000004582_31473cztM0_level2.evt modeM0/AS1T04_029T01_9000004582_31473cztM0_level2_quad_clean.evt
Size (bytes)612,619,20079,182,720
Size584.2 MB 75.5 MB
Events in quadrant A3,748,968477,985
Events in quadrant B6,055,310479,738
Events in quadrant C4,033,559459,812
Events in quadrant D4,197,906448,913

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159263
B0233362
C0166932
D0175682

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76402383.115183%
B76403895.091623%
C76403484.554974%
D76401992.604712%

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 7845 7640 0 0 0.00% 0.00%
B 7845 7640 0 0 0.00% 0.00%
C 7845 7640 28 28 0.36% 0.37%
D 7845 7640 21 21 0.27% 0.27%

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 13 254 12717 59.75 971 947 197.0
A 3 137 10528 48.64 971 947 197.0
A 0 226 8130 36.47 971 947 197.0
B 6 159 2226468 12081.19 947 922 184.2
B 0 190 80234 430.54 947 922 184.2
B 12 111 24249 126.63 947 922 184.2
C 10 22 192833 883.52 917 923 217.2
C 14 238 147099 672.97 917 923 217.2
C 0 10 73327 333.33 917 923 217.2
D 8 195 560622 2511.47 933 907 222.9
D 2 250 82680 366.92 933 907 222.9
D 2 234 28805 125.18 933 907 222.9

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter