ASTROSAT CZTI

Data Quality Report

Orbit 17972

Creation date: 2024-06-27T17:43:19.453488
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_019T01_9000002672_17972cztM0_level2.evt modeM0/AS1A05_019T01_9000002672_17972cztM0_level2_quad_clean.evt
Size (bytes)561,346,56084,208,320
Size535.3 MB 80.3 MB
Events in quadrant A3,446,933541,872
Events in quadrant B3,417,411548,720
Events in quadrant C3,452,436523,261
Events in quadrant D6,225,489464,952

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145282
B0143722
C0142672
D0229993

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6754721.066035%
B6754881.302932%
C67541001.480604%
D675384512.512957%

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 7709 6755 11 11 0.14% 0.16%
B 7709 6755 7 7 0.09% 0.10%
C 7709 6755 0 0 0.00% 0.00%
D 7708 6754 709 709 9.20% 10.50%

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 14 237 122051 715.83 834 815 169.4
A 15 174 119152 698.71 834 815 169.4
A 0 226 7218 37.8 834 815 169.4
B 0 85 56004 347.23 830 809 159.0
B 0 197 48948 302.85 830 809 159.0
B 7 220 40807 251.63 830 809 159.0
C 3 233 191040 1030.42 791 796 184.6
C 14 238 122673 660.12 791 796 184.6
C 9 160 29789 157.03 791 796 184.6
D 7 238 1749781 9505.16 760 737 184.0
D 5 222 1117928 6071.36 760 737 184.0
D 11 176 395590 2145.82 760 737 184.0

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