ASTROSAT CZTI

Data Quality Report

Orbit 13470

Creation date: 2024-06-27T16:41:16.999914
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/AS1A04_103T01_9000001988_13470cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13470cztM0_level2_quad_clean.evt
Size (bytes)446,777,28089,832,960
Size426.1 MB 85.7 MB
Events in quadrant A3,161,893563,266
Events in quadrant B3,477,140576,268
Events in quadrant C3,191,962565,009
Events in quadrant D3,236,193540,766

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138993
B0145772
C0139532
D0143282

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6817560.821476%
B6817931.364236%
C6817620.909491%
D6817530.777468%

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 8494 6818 0 0 0.00% 0.00%
B 8494 6818 15 15 0.18% 0.22%
C 8494 6818 4 4 0.05% 0.06%
D 8494 6818 7 7 0.08% 0.10%

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 1 162 7653 40.92 818 797 167.6
A 0 226 7227 38.37 818 797 167.6
A 8 15 6949 36.71 818 797 167.6
B 4 48 125994 801.42 815 793 156.2
B 10 252 75875 480.61 815 793 156.2
B 3 64 45737 287.69 815 793 156.2
C 3 233 36576 192.07 803 809 186.2
C 14 234 16489 84.2 803 809 186.2
C 10 9 5963 27.68 803 809 186.2
D 8 195 153778 809.37 795 773 189.0
D 13 249 46205 240.33 795 773 189.0
D 2 234 20134 102.41 795 773 189.0

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