ASTROSAT CZTI

Data Quality Report

Orbit 47742

Creation date: 2024-07-27T01:14:49.416855
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_213T01_9000006344_47742cztM0_level2.fits modeM0/AS1T05_213T01_9000006344_47742cztM0_level2_quad_clean.evt
Size (bytes)559,082,880120,864,960
Size533.2 MB 115.3 MB
Events in quadrant A7,842,755781,958
Events in quadrant B4,159,561801,731
Events in quadrant C3,718,294799,692
Events in quadrant D4,372,864736,009

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0289650
B0176590
C0170420
D0186310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77613854.960701%
B77623314.264365%
C77621632.099974%
D77622002.576656%

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 7761 7761 5 5 0.06% 0.06%
B 7762 7762 28 28 0.36% 0.36%
C 7762 7762 89 89 1.15% 1.15%
D 7762 7762 139 139 1.79% 1.79%

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 4396921 24484.37 856 836 179.5
A 13 248 73423 404.28 856 836 179.5
A 9 191 49752 272.44 856 836 179.5
B 0 200 404546 2409.57 854 827 167.5
B 5 255 110044 651.85 854 827 167.5
B 0 198 60369 355.37 854 827 167.5
C 12 2 386939 1956.05 839 842 197.4
C 14 254 52937 263.92 839 842 197.4
C 3 233 5809 25.16 839 842 197.4
D 10 181 750269 3542.38 844 817 211.6
D 5 171 66613 310.99 844 817 211.6
D 12 2 62677 292.39 844 817 211.6

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