ASTROSAT CZTI

Data Quality Report

Orbit 25680

Creation date: 2024-06-27T19:20:20.189000
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/AS1A09_043T01_9000003744_25680cztM0_level2.evt modeM0/AS1A09_043T01_9000003744_25680cztM0_level2_quad_clean.evt
Size (bytes)470,871,36074,856,960
Size449.1 MB 71.4 MB
Events in quadrant A3,387,303470,824
Events in quadrant B3,270,898479,986
Events in quadrant C3,243,728448,778
Events in quadrant D3,929,908426,643

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136940
B0133040
C0132030
D0156250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6312180.285171%
B6312340.538657%
C6312630.998099%
D63121422.249683%

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 7487 6313 0 0 0.00% 0.00%
B 7487 6313 1 1 0.01% 0.02%
C 7487 6313 0 0 0.00% 0.00%
D 7487 6313 113 113 1.51% 1.79%

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 8 192 213202 1297.36 823 810 163.7
A 13 254 9352 52.18 823 810 163.7
A 3 137 7249 39.33 823 810 163.7
B 12 111 18679 114.86 824 805 155.6
B 11 111 16805 102.82 824 805 155.6
B 14 111 15506 94.47 824 805 155.6
C 14 238 127290 693.11 787 794 182.5
C 14 225 26372 140.15 787 794 182.5
C 3 233 19396 101.93 787 794 182.5
D 1 52 453929 2374.79 781 760 190.8
D 8 195 428581 2241.96 781 760 190.8
D 13 104 86965 451.75 781 760 190.8

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