ASTROSAT CZTI

Data Quality Report

Orbit 13968

Creation date: 2024-06-27T16:48:33.375536
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/AS1A04_225T01_9000002062_13968cztM0_level2.evt modeM0/AS1A04_225T01_9000002062_13968cztM0_level2_quad_clean.evt
Size (bytes)523,212,480116,061,120
Size499.0 MB 110.7 MB
Events in quadrant A3,439,355770,543
Events in quadrant B3,880,115798,696
Events in quadrant C3,448,573768,120
Events in quadrant D4,620,882708,639

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144803
B0158322
C0142992
D0181002

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6732951.411171%
B67322023.000594%
C6732270.401070%
D67323344.961378%

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 9418 6735 1 1 0.01% 0.01%
B 9418 6735 44 44 0.47% 0.65%
C 9418 6735 1 1 0.01% 0.01%
D 9418 6735 297 297 3.15% 4.41%

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 14 111 69543 398.23 861 844 172.5
A 1 162 19621 108.85 861 844 172.5
A 9 143 17045 93.91 861 844 172.5
B 10 245 225035 1381.81 871 850 162.2
B 3 64 50620 306.77 871 850 162.2
B 4 80 49118 297.51 871 850 162.2
C 3 233 156469 807.58 842 849 192.7
C 13 61 5908 26.25 842 849 192.7
C 6 253 5676 25.05 842 849 192.7
D 13 122 1048515 4953.76 814 793 211.5
D 8 195 116057 544.98 814 793 211.5
D 2 14 87584 410.36 814 793 211.5

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