ASTROSAT CZTI

Data Quality Report

Orbit 46426

Creation date: 2024-06-27T23:23:04.060518
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_062T01_9000006208_46426cztM0_level2.fits modeM0/AS1A13_062T01_9000006208_46426cztM0_level2_quad_clean.evt
Size (bytes)484,908,480117,178,560
Size462.4 MB 111.8 MB
Events in quadrant A6,320,440763,725
Events in quadrant B3,328,081795,712
Events in quadrant C3,367,488774,025
Events in quadrant D4,369,335708,202

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234072
B0149742
C0152742
D0180922

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72701792.462173%
B7271871.196534%
C7271650.893962%
D72711642.255536%

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 8825 7272 14 14 0.16% 0.19%
B 8826 7273 3 3 0.03% 0.04%
C 8826 7273 10 10 0.11% 0.14%
D 8826 7273 155 155 1.76% 2.13%

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 3121949 18396.32 817 799 169.7
A 2 79 34811 200.47 817 799 169.7
A 13 254 12330 67.96 817 799 169.7
B 0 190 46409 280.15 815 789 162.8
B 0 189 41944 252.73 815 789 162.8
B 12 111 21637 128.03 815 789 162.8
C 14 254 129895 672.96 812 815 191.8
C 3 233 50469 258.87 812 815 191.8
C 10 20 7001 32.25 812 815 191.8
D 13 249 940880 4656.34 804 779 201.9
D 8 129 171123 843.72 804 779 201.9
D 1 52 93254 458.03 804 779 201.9

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