ASTROSAT CZTI

Data Quality Report

Orbit 20225

Creation date: 2024-06-27T18:12:40.605156
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/AS1A05_117T01_9000002998_20225cztM0_level2.evt modeM0/AS1A05_117T01_9000002998_20225cztM0_level2_quad_clean.evt
Size (bytes)554,984,64079,174,080
Size529.3 MB 75.5 MB
Events in quadrant A3,886,974480,048
Events in quadrant B4,375,079481,065
Events in quadrant C3,671,356462,033
Events in quadrant D4,373,986460,967

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162042
B0177682
C0153232
D0176302

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73721942.631579%
B73722363.201302%
C73721121.519262%
D73732483.363624%

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 8442 7374 73 73 0.86% 0.99%
B 8442 7374 65 65 0.77% 0.88%
C 8442 7374 0 0 0.00% 0.00%
D 8443 7375 167 167 1.98% 2.26%

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 14 238 323460 1726.89 917 897 186.8
A 4 2 13420 67.04 917 897 186.8
A 10 253 12774 63.59 917 897 186.8
B 7 220 501958 2863.34 907 884 175.0
B 6 36 116238 659.18 907 884 175.0
B 10 245 73554 415.27 907 884 175.0
C 14 238 135188 647.49 880 886 207.4
C 3 233 84815 404.64 880 886 207.4
C 1 16 14907 67.6 880 886 207.4
D 12 17 439409 2015.22 890 865 217.6
D 1 52 194791 891.14 890 865 217.6
D 12 218 85324 388.11 890 865 217.6

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