ASTROSAT CZTI

Data Quality Report

Orbit 27882

Creation date: 2024-06-27T19:45:34.532961
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/AS1A10_048T01_9000004028_27882cztM0_level2.evt modeM0/AS1A10_048T01_9000004028_27882cztM0_level2_quad_clean.evt
Size (bytes)389,816,64067,429,440
Size371.8 MB 64.3 MB
Events in quadrant A2,570,275432,535
Events in quadrant B2,874,704430,665
Events in quadrant C2,657,304405,766
Events in quadrant D3,334,963393,826

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111750
B0121660
C0112610
D0134970

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5405390.721554%
B5405941.739130%
C5405591.091582%
D54042324.293116%

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 5885 5406 0 0 0.00% 0.00%
B 5885 5405 12 12 0.20% 0.22%
C 5885 5406 0 0 0.00% 0.00%
D 5884 5405 153 153 2.60% 2.83%

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 13 254 10096 70.02 665 652 134.9
A 3 137 6363 42.34 665 652 134.9
A 0 226 5512 36.03 665 652 134.9
B 0 230 155133 1214.4 659 643 127.2
B 5 255 37776 291.89 659 643 127.2
B 10 247 36405 281.12 659 643 127.2
C 14 238 99986 669.35 630 635 148.4
C 3 233 89050 595.68 630 635 148.4
C 13 61 4255 24.39 630 635 148.4
D 7 238 583715 3902.79 628 610 149.4
D 2 250 236526 1579.01 628 610 149.4
D 1 52 95913 637.87 628 610 149.4

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