ASTROSAT CZTI

Data Quality Report

Orbit 33225

Creation date: 2024-06-27T20:46:19.418885
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_067T01_9000004774_33225cztM0_level2.evt modeM0/AS1A10_067T01_9000004774_33225cztM0_level2_quad_clean.evt
Size (bytes)597,988,80084,049,920
Size570.3 MB 80.2 MB
Events in quadrant A2,677,267561,781
Events in quadrant B5,167,547542,430
Events in quadrant C3,554,563542,725
Events in quadrant D6,323,811497,889

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116023
B0192982
C0145142
D0229942

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A571850.087443%
B57185259.181532%
C57181753.060511%
D57185419.461350%

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 7121 5719 0 0 0.00% 0.00%
B 7121 5719 274 274 3.85% 4.79%
C 7121 5719 123 123 1.73% 2.15%
D 7121 5719 475 475 6.67% 8.31%

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 47 20630 145.64 681 668 137.1
A 13 6 17747 124.6 681 668 137.1
A 13 254 11183 76.71 681 668 137.1
B 4 170 1638224 12979.31 657 639 126.2
B 5 172 486249 3848.89 657 639 126.2
B 0 219 250822 1982.92 657 639 126.2
C 10 49 423106 2801.81 650 655 150.8
C 0 10 407537 2698.55 650 655 150.8
C 1 23 138453 913.91 650 655 150.8
D 8 195 1483942 8867.48 634 619 167.3
D 12 3 582347 3477.64 634 619 167.3
D 2 250 538376 3214.78 634 619 167.3

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