ASTROSAT CZTI

Data Quality Report

Orbit 04847

Creation date: 2024-06-27T14:47:51.651051
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/AS1G05_253T02_9000000614_04847cztM0_level2.evt modeM0/AS1G05_253T02_9000000614_04847cztM0_level2_quad_clean.evt
Size (bytes)491,863,68093,971,520
Size469.1 MB 89.6 MB
Events in quadrant A3,455,118607,310
Events in quadrant B3,652,785606,620
Events in quadrant C3,294,289600,096
Events in quadrant D4,046,908572,686

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01342
D01342

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014799127
B01517765
C01433280
D016417102

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65781592.417148%
B65941442.183803%
C6585921.397115%
D65872603.947169%

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 7772 6621 33 33 0.42% 0.50%
B 7772 6622 23 23 0.30% 0.35%
C 7772 6619 4 4 0.05% 0.06%
D 7772 6620 122 122 1.57% 1.84%

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 0 50 204181 1208.14 829 813 168.3
A 13 251 43970 256.38 829 813 168.3
A 12 194 8443 45.33 829 813 168.3
B 8 3 237593 1501.58 828 811 157.7
B 4 80 62956 394.1 828 811 157.7
B 10 246 51245 319.83 828 811 157.7
C 9 247 170501 922.06 795 798 184.0
C 12 4 12873 65.61 795 798 184.0
C 1 16 8326 40.9 795 798 184.0
D 13 235 442108 2260.49 799 776 195.2
D 2 234 158016 805.38 799 776 195.2
D 2 136 123510 628.64 799 776 195.2

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