ASTROSAT CZTI

Data Quality Report

Orbit 17025

Creation date: 2024-06-27T17:30:57.761298
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_206T01_9000002528_17025cztM0_level2.evt modeM0/AS1A05_206T01_9000002528_17025cztM0_level2_quad_clean.evt
Size (bytes)502,816,320120,170,880
Size479.5 MB 114.6 MB
Events in quadrant A3,403,351788,755
Events in quadrant B4,053,067798,256
Events in quadrant C3,656,057780,591
Events in quadrant D3,621,197765,611

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151482
B0167212
C0154552
D0156483

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72761752.405168%
B72763244.452996%
C72762203.023639%
D72751682.309278%

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 7707 7278 0 0 0.00% 0.00%
B 7707 7278 61 61 0.79% 0.84%
C 7707 7277 0 0 0.00% 0.00%
D 7706 7277 14 14 0.18% 0.19%

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 15 174 76062 430.76 863 842 174.6
A 0 226 7492 38.08 863 842 174.6
A 12 194 6655 33.29 863 842 174.6
B 7 220 268415 1630.19 861 837 164.1
B 3 64 147725 894.9 861 837 164.1
B 0 229 88973 536.96 861 837 164.1
C 3 233 219531 1109.4 844 848 197.1
C 14 238 127527 642.66 844 848 197.1
C 7 247 13354 63.44 844 848 197.1
D 1 52 296965 1419.08 857 831 208.7
D 10 70 44130 207.49 857 831 208.7
D 2 234 34043 159.15 857 831 208.7

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