ASTROSAT CZTI

Data Quality Report

Orbit 45663

Creation date: 2024-06-27T23:14:43.436841
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/AS1A13_071T07_9000006116_45663cztM0_level2.fits modeM0/AS1A13_071T07_9000006116_45663cztM0_level2_quad_clean.evt
Size (bytes)479,174,400110,404,800
Size457.0 MB 105.3 MB
Events in quadrant A5,635,991744,883
Events in quadrant B3,593,447762,420
Events in quadrant C3,548,534737,753
Events in quadrant D4,473,944661,718

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204403
B0145801
C0148791
D0174601

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62552413.852918%
B62562323.708440%
C62561622.589514%
D62563405.434783%

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 7420 6255 16 16 0.22% 0.26%
B 7421 6256 88 88 1.19% 1.41%
C 7421 6257 90 90 1.21% 1.44%
D 7421 6256 215 215 2.90% 3.44%

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 10 83 2695680 17844.13 736 724 151.0
A 10 248 27115 174.74 736 724 151.0
A 13 248 26118 168.14 736 724 151.0
B 12 16 150854 1077.46 731 712 139.3
B 5 32 129575 924.75 731 712 139.3
B 5 172 121688 868.16 731 712 139.3
C 0 64 435588 2631.5 719 723 165.3
C 14 254 170674 1028.43 719 723 165.3
C 2 14 80907 485.22 719 723 165.3
D 13 249 507975 2819.54 715 692 179.9
D 1 52 477915 2652.47 715 692 179.9
D 12 1 153204 847.68 715 692 179.9

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