ASTROSAT CZTI

Data Quality Report

Orbit 25073

Creation date: 2024-06-27T19:13:30.952927
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/AS1T03_206T01_9000003672_25073cztM0_level2.evt modeM0/AS1T03_206T01_9000003672_25073cztM0_level2_quad_clean.evt
Size (bytes)611,144,64071,645,760
Size582.8 MB 68.3 MB
Events in quadrant A3,430,565437,060
Events in quadrant B3,616,658442,929
Events in quadrant C3,471,547416,585
Events in quadrant D7,518,382387,671

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144212
B0148392
C0144683
D0269502

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6965951.363963%
B69651492.139268%
C69641101.579552%
D6964103614.876508%

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 7785 6966 0 0 0.00% 0.00%
B 7785 6966 18 18 0.23% 0.26%
C 7784 6965 0 0 0.00% 0.00%
D 7784 6965 1034 1034 13.28% 14.85%

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 11270 58.49 887 869 177.8
A 3 137 8069 40.49 887 869 177.8
A 0 226 7666 38.23 887 869 177.8
B 10 249 54327 312.55 885 863 171.1
B 3 64 48496 278.46 885 863 171.1
B 5 172 27609 156.36 885 863 171.1
C 14 238 135311 672.77 845 851 199.9
C 7 247 15879 75.19 845 851 199.9
C 2 16 13272 62.15 845 851 199.9
D 9 35 3086598 15282.35 829 804 201.9
D 8 195 787328 3895.25 829 804 201.9
D 1 52 251795 1243.03 829 804 201.9

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