ASTROSAT CZTI

Data Quality Report

Orbit 09923

Creation date: 2024-06-27T15:52:34.716649
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/AS1G07_027T01_9000001414_09923cztM0_level2.evt modeM0/AS1G07_027T01_9000001414_09923cztM0_level2_quad_clean.evt
Size (bytes)610,718,40088,626,240
Size582.4 MB 84.5 MB
Events in quadrant A3,734,726566,956
Events in quadrant B3,399,440574,804
Events in quadrant C3,168,538562,118
Events in quadrant D7,728,935502,169

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015695171
B014634144
C014082106
D028380700

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01422

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68571291.881289%
B68581111.618548%
C6873701.018478%
D679872410.650191%

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 7717 6916 22 22 0.29% 0.32%
B 7716 6918 22 22 0.29% 0.32%
C 7717 6921 0 0 0.00% 0.00%
D 7717 6883 756 756 9.80% 10.98%

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 15 239 515775 3055.67 826 808 168.5
A 15 174 28668 165.31 826 808 168.5
A 13 251 10637 58.32 826 808 168.5
B 0 85 52126 322.66 827 809 159.0
B 4 81 33846 207.72 827 809 159.0
B 0 214 32380 198.51 827 809 159.0
C 14 67 17482 89.11 806 811 187.1
C 13 61 6234 28.99 806 811 187.1
C 14 234 4868 21.68 806 811 187.1
D 1 52 3534772 18407.16 771 750 192.0
D 8 195 614267 3195.54 771 750 192.0
D 2 16 464558 2415.77 771 750 192.0

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