ASTROSAT CZTI

Data Quality Report

Orbit 20160226_G02_018T08_9000000346_level2

Creation date: 2025-10-27T22:15:40.534860
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/AS1G02_018T08_9000000346cztM0_level2.fits modeM0/AS1G02_018T08_9000000346cztM0_level2_quad_clean.evt
Size (bytes)1,236,479,0401,322,919,360
Size1.2 GB 1.2 GB
Events in quadrant A7,751,5388,348,116
Events in quadrant B7,560,6928,408,801
Events in quadrant C7,663,9728,117,705
Events in quadrant D5,152,4125,877,331

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028500
B028650
C028660
D028600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02947000
B02983980
C02988600
D02698010

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1139846569322536139844135157806
B1139846569322536139844135157806
C1139846569322536139844135157806
D1139846569322536139844135157806

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14290915201.063614%
B14290218181.272201%
C14285112580.880638%
D11324933282.938657%

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 177879 143161 0 0 0.00% 0.00%
B 177879 143140 0 0 0.00% 0.00%
C 177879 143086 0 0 0.00% 0.00%
D 177878 113466 0 0 0.00% 0.00%

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 0 29 7236 10.13 2016 1870 529.7
A 7 110 6671 9.06 2016 1870 529.7
A 14 79 5714 7.26 2016 1870 529.7
B 2 9 6760 12.54 1987 1883 388.8
B 12 226 5845 10.19 1987 1883 388.8
B 14 254 5360 8.94 1987 1883 388.8
C 3 158 5130 5.99 2030 1870 544.6
C 9 188 5099 5.93 2030 1870 544.6
C 9 242 5057 5.85 2030 1870 544.6
D 3 14 3904 6.25 1469 1327 412.2
D 6 231 3751 5.88 1469 1327 412.2
D 11 82 3727 5.82 1469 1327 412.2

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