ASTROSAT CZTI

Data Quality Report

Orbit 19948

Creation date: 2024-06-27T18:09:07.042661
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/AS1A05_160T01_9000002970_19948cztM0_level2.evt modeM0/AS1A05_160T01_9000002970_19948cztM0_level2_quad_clean.evt
Size (bytes)631,111,68089,403,840
Size601.9 MB 85.3 MB
Events in quadrant A7,415,053528,023
Events in quadrant B3,466,473594,031
Events in quadrant C4,033,158564,861
Events in quadrant D3,756,398564,792

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265222
B0144222
C0160762
D0155382

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6523147022.535643%
B65231201.839644%
C65232583.955235%
D65231872.866779%

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 8818 6524 1195 1195 13.55% 18.32%
B 8818 6524 11 11 0.12% 0.17%
C 8818 6523 48 48 0.54% 0.74%
D 8818 6524 85 85 0.96% 1.30%

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 14 238 4428146 28395.14 774 759 155.9
A 0 226 6521 36.95 774 759 155.9
A 3 137 5995 33.58 774 759 155.9
B 7 220 74122 454.5 843 825 161.3
B 0 197 57079 348.82 843 825 161.3
B 12 111 19060 113.07 843 825 161.3
C 9 221 401558 2110.48 811 817 189.9
C 3 233 283126 1486.76 811 817 189.9
C 14 238 126066 659.62 811 817 189.9
D 1 52 485204 2403.6 825 804 201.5
D 2 184 106973 526.81 825 804 201.5
D 2 234 35265 171.0 825 804 201.5

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