ASTROSAT CZTI

Data Quality Report

Orbit 46356

Creation date: 2024-06-27T23:22:09.209675
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/AS1A13_070T05_9000006198_46356cztM0_level2.fits modeM0/AS1A13_070T05_9000006198_46356cztM0_level2_quad_clean.evt
Size (bytes)629,818,56099,708,480
Size600.6 MB 95.1 MB
Events in quadrant A8,905,761529,958
Events in quadrant B3,434,359765,256
Events in quadrant C3,064,278732,144
Events in quadrant D7,397,309531,599

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0307202
B0146492
C0137172
D0265242

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6597185428.103683%
B65971462.213127%
C6597590.894346%
D6597156723.753221%

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 7682 6598 1527 1527 19.88% 23.14%
B 7682 6598 38 38 0.49% 0.58%
C 7682 6598 4 4 0.05% 0.06%
D 7682 6598 1180 1180 15.36% 17.88%

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 15 223 3296228 24515.49 640 626 134.4
A 10 83 2819808 20971.48 640 626 134.4
A 15 239 139903 1036.06 640 626 134.4
B 5 172 220045 1448.09 766 744 151.4
B 5 32 41923 271.91 766 744 151.4
B 0 189 38644 250.26 766 744 151.4
C 12 2 84577 476.85 751 756 175.8
C 12 249 25028 138.08 751 756 175.8
C 3 233 9272 48.45 751 756 175.8
D 5 235 2432646 14220.97 679 656 171.0
D 1 52 1967829 11502.97 679 656 171.0
D 5 171 164563 958.44 679 656 171.0

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