ASTROSAT CZTI

Data Quality Report

Orbit 20160311_G02_018T06_9000000370_level2

Creation date: 2025-10-28T03:27:52.206121
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_018T06_9000000370cztM0_level2.fits modeM0/AS1G02_018T06_9000000370cztM0_level2_quad_clean.evt
Size (bytes)1,372,080,9601,407,758,400
Size1.3 GB 1.3 GB
Events in quadrant A8,151,5508,269,871
Events in quadrant B8,019,8328,462,735
Events in quadrant C8,019,5868,011,920
Events in quadrant D6,938,9547,470,736

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02190
B02190
C02190
D02190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A031060
B031060
C031060
D031060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03149100
B03161340
C03350290
D03273540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15208419881.307172%
B15208419531.284159%
C15208438952.561085%
D15208420751.364378%

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 177546 152080 0 0 0.00% 0.00%
B 177546 152087 0 0 0.00% 0.00%
C 177546 152059 0 0 0.00% 0.00%
D 177546 152083 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 7663 10.46 2120 1969 544.5
A 7 110 7100 9.42 2120 1969 544.5
A 9 19 5942 7.3 2120 1969 544.5
B 2 9 7031 12.31 2109 2001 408.6
B 12 226 6113 10.06 2109 2001 408.6
B 14 254 5595 8.79 2109 2001 408.6
C 9 188 5433 6.12 2123 1945 569.7
C 2 191 5372 6.02 2123 1945 569.7
C 9 242 5272 5.84 2123 1945 569.7
D 7 5 5234 6.21 1984 1791 554.7
D 6 231 5085 5.94 1984 1791 554.7
D 4 160 5058 5.89 1984 1791 554.7

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