ASTROSAT CZTI

Data Quality Report

Orbit 37968

Creation date: 2024-06-27T21:46:47.065808
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/AS1A11_082T01_9000005356_37968cztM0_level2.evt modeM0/AS1A11_082T01_9000005356_37968cztM0_level2_quad_clean.evt
Size (bytes)415,091,52055,785,600
Size395.9 MB 53.2 MB
Events in quadrant A3,692,512334,722
Events in quadrant B3,081,846339,691
Events in quadrant C2,814,134342,605
Events in quadrant D2,632,241310,762

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147243
B0122612
C0112232
D0110072

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5162240.464936%
B51621062.053468%
C5162330.639287%
D5162180.348702%

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 7134 5163 4 4 0.06% 0.08%
B 7134 5163 69 69 0.97% 1.34%
C 7134 5163 17 17 0.24% 0.33%
D 7134 5163 9 9 0.13% 0.17%

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 15 222 830717 6693.31 628 615 124.0
A 10 83 351917 2832.63 628 615 124.0
A 15 235 52673 419.75 628 615 124.0
B 5 172 285013 2430.57 628 613 117.0
B 5 184 128236 1090.7 628 613 117.0
B 5 200 54034 456.55 628 613 117.0
C 15 214 221929 1547.89 625 630 143.0
C 0 10 86808 602.78 625 630 143.0
C 14 254 63351 438.71 625 630 143.0
D 2 250 42662 283.09 621 606 148.6
D 13 249 41729 276.81 621 606 148.6
D 1 52 39118 259.23 621 606 148.6

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