ASTROSAT CZTI

Data Quality Report

Orbit 20210521_A10_053T13_9000004394_level2

Creation date: 2021-05-24T13:50:35.816622
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/AS1A10_053T13_9000004394cztM0_level2_bc.evt modeM0/AS1A10_053T13_9000004394cztM0_level2_quad_clean.evt
Size (bytes)1,639,252,800468,397,440
Size1.5 GB 446.7 MB
Events in quadrant A7,976,9972,985,874
Events in quadrant B18,874,6442,949,339
Events in quadrant C8,934,4182,849,905
Events in quadrant D11,321,0832,842,542

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0771700
B01149500
C0822610
D0857420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07620
B07620
C07620
D07620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0490
B0490
C0490
D0490

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A372502550.684564%
B372508442.265772%
C372509662.593289%
D372503350.899329%

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 42309 37253 0 0 0.00% 0.00%
B 42309 37249 112 112 0.26% 0.30%
C 42309 37250 16 16 0.04% 0.04%
D 42309 37250 34 34 0.08% 0.09%

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 8 192 82045 184.3 2026 1996 434.3
A 13 254 67390 150.56 2026 1996 434.3
A 12 96 55293 122.71 2026 1996 434.3
B 6 159 9999420 26232.01 2003 1958 381.1
B 4 171 565496 1478.65 2003 1958 381.1
B 0 229 323417 843.47 2003 1958 381.1
C 10 22 1155192 2553.76 1915 1906 451.6
C 3 233 227027 498.49 1915 1906 451.6
C 0 10 111818 243.38 1915 1906 451.6
D 8 195 1628193 3597.57 1995 1938 452.0
D 1 52 934075 2062.05 1995 1938 452.0
D 13 104 516730 1138.81 1995 1938 452.0

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