ASTROSAT CZTI

Data Quality Report

Orbit 16023

Creation date: 2024-06-27T17:16:55.229062
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/AS1T02_091T01_9000002368_16023cztM0_level2.evt modeM0/AS1T02_091T01_9000002368_16023cztM0_level2_quad_clean.evt
Size (bytes)478,958,40072,308,160
Size456.8 MB 69.0 MB
Events in quadrant A3,423,340447,625
Events in quadrant B3,741,839449,278
Events in quadrant C3,537,520433,926
Events in quadrant D3,383,631427,566

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139993
B0150712
C0143732
D0139522

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61781011.634833%
B61781662.686954%
C61781482.395597%
D6178861.392036%

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 7524 6179 6 6 0.08% 0.10%
B 7524 6179 36 36 0.48% 0.58%
C 7524 6179 5 5 0.07% 0.08%
D 7524 6179 9 9 0.12% 0.15%

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 69 15175 80.8 884 868 177.1
A 12 96 8135 41.04 884 868 177.1
A 0 226 7910 39.77 884 868 177.1
B 7 220 138296 841.59 876 859 163.3
B 4 173 83465 505.84 876 859 163.3
B 0 245 26106 154.6 876 859 163.3
C 14 238 134893 683.76 852 861 196.0
C 3 233 74051 373.38 852 861 196.0
C 10 22 7259 32.64 852 861 196.0
D 2 152 39720 184.95 869 848 210.2
D 12 233 28819 133.09 869 848 210.2
D 2 234 25245 116.08 869 848 210.2

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