ASTROSAT CZTI

Data Quality Report

Orbit 28873

Creation date: 2024-06-27T19:57:27.481013
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/AS1A10_123T07_9000004140_28873cztM0_level2.evt modeM0/AS1A10_123T07_9000004140_28873cztM0_level2_quad_clean.evt
Size (bytes)556,885,440101,784,960
Size531.1 MB 97.1 MB
Events in quadrant A3,350,275659,256
Events in quadrant B3,703,624679,097
Events in quadrant C3,448,703652,816
Events in quadrant D5,894,289610,034

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144773
B0156302
C0147282
D0223782

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6901560.811477%
B69011652.390958%
C69011371.985220%
D69016469.360962%

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 8851 6901 0 0 0.00% 0.00%
B 8851 6901 25 25 0.28% 0.36%
C 8851 6901 0 0 0.00% 0.00%
D 8851 6901 597 597 6.75% 8.65%

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 13 6 18192 100.2 859 840 173.2
A 13 254 15554 84.97 859 840 173.2
A 14 235 14407 78.35 859 840 173.2
B 10 246 308461 1909.83 852 832 161.1
B 12 17 21035 125.42 852 832 161.1
B 12 111 20092 119.57 852 832 161.1
C 14 238 138922 711.8 832 838 194.0
C 3 233 48850 247.49 832 838 194.0
C 14 254 9553 44.92 832 838 194.0
D 8 195 2066732 10489.44 819 795 197.0
D 13 104 300500 1521.7 819 795 197.0
D 1 52 205086 1037.25 819 795 197.0

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