ASTROSAT CZTI

Data Quality Report

Orbit 15468

Creation date: 2024-06-27T17:08:56.510682
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_203T01_9000002284_15468cztM0_level2.evt modeM0/AS1A04_203T01_9000002284_15468cztM0_level2_quad_clean.evt
Size (bytes)483,943,68092,064,960
Size461.5 MB 87.8 MB
Events in quadrant A3,226,764587,567
Events in quadrant B3,315,655596,246
Events in quadrant C3,365,476580,836
Events in quadrant D4,290,331553,230

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138143
B0140082
C0140822
D0172192

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6756520.769686%
B6756701.036116%
C6756330.488455%
D67561362.013025%

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 7767 6758 0 0 0.00% 0.00%
B 7767 6758 1 1 0.01% 0.01%
C 7767 6758 2 2 0.03% 0.03%
D 7767 6758 111 111 1.43% 1.64%

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 3 1 45872 269.56 825 807 167.2
A 9 143 10046 55.26 825 807 167.2
A 0 226 7478 39.9 825 807 167.2
B 0 189 43379 271.13 819 799 157.0
B 4 142 21825 133.89 819 799 157.0
B 12 111 18852 114.96 819 799 157.0
C 3 233 259575 1395.09 793 796 185.5
C 10 22 14693 74.92 793 796 185.5
C 13 61 5643 26.13 793 796 185.5
D 1 52 1017279 5221.09 794 770 194.7
D 2 33 154670 790.47 794 770 194.7
D 5 222 44919 226.76 794 770 194.7

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