ASTROSAT CZTI

Data Quality Report

Orbit 37782

Creation date: 2024-06-27T21:44:22.523100
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/AS1T05_057T01_9000005346_37782cztM0_level2.evt modeM0/AS1T05_057T01_9000005346_37782cztM0_level2_quad_clean.evt
Size (bytes)609,399,36078,408,000
Size581.2 MB 74.8 MB
Events in quadrant A7,746,706413,633
Events in quadrant B3,167,172548,314
Events in quadrant C2,867,100545,361
Events in quadrant D4,332,431511,248

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265023
B0126492
C0114122
D0163522

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5056194238.409810%
B5056901.780063%
C5056641.265823%
D50561533.026108%

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 7209 5057 1980 1980 27.47% 39.15%
B 7209 5057 75 75 1.04% 1.48%
C 7209 5057 73 73 1.01% 1.44%
D 7209 5057 201 201 2.79% 3.97%

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 15 222 5416733 51628.89 516 509 104.9
A 10 83 286294 2724.18 516 509 104.9
A 9 143 19207 178.23 516 509 104.9
B 4 81 219606 1919.39 610 596 114.1
B 0 189 175369 1531.7 610 596 114.1
B 0 229 153907 1343.61 610 596 114.1
C 15 214 233835 1702.5 593 598 137.0
C 0 10 149346 1085.78 593 598 137.0
C 1 23 138535 1006.86 593 598 137.0
D 12 235 935437 6430.22 597 583 145.4
D 13 171 513410 3527.39 597 583 145.4
D 13 249 138013 945.29 597 583 145.4

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