ASTROSAT CZTI

Data Quality Report

Orbit 17141

Creation date: 2024-06-27T17:32:49.345969
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/AS1C04_004T01_9000002542_17141cztM0_level2.evt modeM0/AS1C04_004T01_9000002542_17141cztM0_level2_quad_clean.evt
Size (bytes)533,897,28082,877,760
Size509.2 MB 79.0 MB
Events in quadrant A3,296,836512,490
Events in quadrant B3,322,640525,968
Events in quadrant C5,828,624492,301
Events in quadrant D3,248,016493,154

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143791
B0143771
C0223601
D0145941

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69781151.648037%
B69781432.049298%
C69782713.883634%
D69791001.432870%

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 7463 6979 1 1 0.01% 0.01%
B 7463 6978 2 2 0.03% 0.03%
C 7463 6979 5 5 0.07% 0.07%
D 7464 6980 25 25 0.33% 0.36%

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 12 189 46460 269.48 838 819 169.4
A 12 96 23189 132.08 838 819 169.4
A 0 226 7415 38.94 838 819 169.4
B 12 111 19833 116.85 840 818 162.7
B 11 111 17322 101.42 840 818 162.7
B 4 173 16779 98.08 840 818 162.7
C 3 233 2582737 13755.87 801 805 187.7
C 14 238 121825 644.76 801 805 187.7
C 13 61 5487 24.94 801 805 187.7
D 10 70 48647 241.77 816 793 197.9
D 13 249 43249 214.5 816 793 197.9
D 7 223 39277 194.43 816 793 197.9

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