ASTROSAT CZTI

Data Quality Report

Orbit 47846

Creation date: 2024-08-03T04:01:31.599184
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/AS1T05_216T01_9000006356_47846cztM0_level2.fits modeM0/AS1T05_216T01_9000006356_47846cztM0_level2_quad_clean.evt
Size (bytes)1,920,686,400257,448,960
Size1.8 GB 245.5 MB
Events in quadrant A18,761,0311,849,752
Events in quadrant B9,673,1771,915,665
Events in quadrant C8,624,1291,897,714
Events in quadrant D32,619,496863,527

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0684703
B0418424
C0396343
D01095193

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A183946823.707731%
B183944112.234424%
C183942171.179733%
D183941001854.463412%

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 19799 18394 137 137 0.69% 0.74%
B 19799 18394 127 127 0.64% 0.69%
C 19799 18398 159 159 0.80% 0.86%
D 19799 18396 9582 9582 48.40% 52.09%

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 10 83 10686718 25897.66 1994 1953 412.6
A 13 248 118518 282.53 1994 1953 412.6
A 7 3 109032 259.54 1994 1953 412.6
B 4 171 397969 1014.66 1993 1933 390.3
B 5 255 350743 893.66 1993 1933 390.3
B 0 200 327275 833.54 1993 1933 390.3
C 14 254 623995 1336.1 1972 1980 465.5
C 12 2 222181 472.99 1972 1980 465.5
C 3 233 46238 95.07 1972 1980 465.5
D 2 165 20049196 53146.63 1473 1425 377.2
D 12 2 4214621 11169.18 1473 1425 377.2
D 2 37 1824086 4831.87 1473 1425 377.2

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