ASTROSAT CZTI

Data Quality Report

Orbit 20180809_G08_036T01_9000002290_level2

Creation date: 2025-11-24T00:12:23.254950
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/AS1G08_036T01_9000002290cztM0_level2.fits modeM0/AS1G08_036T01_9000002290cztM0_level2_quad_clean.evt
Size (bytes)190,848,960189,993,600
Size182.0 MB 181.2 MB
Events in quadrant A1,171,7161,149,843
Events in quadrant B1,121,7381,142,461
Events in quadrant C1,137,3121,096,370
Events in quadrant D977,866993,567

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0422470
B0441750
C0422650
D0515160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04040
B04040
C04040
D04040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A199073201.607475%
B199073741.878736%
C199073241.627568%
D199077723.878033%

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 22492 19904 0 0 0.00% 0.00%
B 22492 19908 0 0 0.00% 0.00%
C 22492 19906 0 0 0.00% 0.00%
D 22492 19869 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 1103 10.6 304 285 77.2
A 7 110 953 8.65 304 285 77.2
A 9 19 909 8.08 304 285 77.2
B 2 9 847 9.27 296 281 61.0
B 14 254 789 8.32 296 281 61.0
B 3 80 753 7.73 296 281 61.0
C 12 241 800 6.62 300 280 78.6
C 3 126 787 6.45 300 280 78.6
C 7 111 776 6.31 300 280 78.6
D 6 231 741 6.36 279 252 76.9
D 7 3 712 5.98 279 252 76.9
D 3 14 710 5.95 279 252 76.9

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