ASTROSAT CZTI

Data Quality Report

Orbit 46492

Creation date: 2024-06-27T23:23:48.696888
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_068T05_9000006218_46492cztM0_level2.fits modeM0/AS1A13_068T05_9000006218_46492cztM0_level2_quad_clean.evt
Size (bytes)521,568,000108,437,760
Size497.4 MB 103.4 MB
Events in quadrant A6,093,876720,213
Events in quadrant B3,568,262745,202
Events in quadrant C3,120,285726,965
Events in quadrant D5,985,314607,753

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219501
B0154091
C0143801
D0224741

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69423605.185825%
B69413625.215387%
C69411702.449215%
D694183211.986745%

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 7347 6942 2 2 0.03% 0.03%
B 7346 6941 70 70 0.95% 1.01%
C 7346 6941 0 0 0.00% 0.00%
D 7346 6941 592 592 8.06% 8.53%

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 10 83 2966788 17969.61 788 768 165.1
A 13 248 65619 392.9 788 768 165.1
A 13 254 12745 72.56 788 768 165.1
B 5 172 225016 1431.04 784 758 156.7
B 0 190 102516 649.34 784 758 156.7
B 5 32 42689 267.57 784 758 156.7
C 3 233 36644 196.71 781 782 182.3
C 14 254 35717 191.62 781 782 182.3
C 13 61 5072 23.53 781 782 182.3
D 2 249 1107226 5948.95 741 717 186.0
D 13 249 566169 3040.06 741 717 186.0
D 1 52 522875 2807.29 741 717 186.0

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