ASTROSAT CZTI

Data Quality Report

Orbit 40962

Creation date: 2024-06-27T22:22:44.581742
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/AS1A12_052T04_9000005582_40962cztM0_level2.fits modeM0/AS1A12_052T04_9000005582_40962cztM0_level2_quad_clean.evt
Size (bytes)1,118,266,560309,775,680
Size1.0 GB 295.4 MB
Events in quadrant A10,744,0072,063,968
Events in quadrant B8,321,4802,115,886
Events in quadrant C9,645,6072,025,119
Events in quadrant D11,184,5081,841,112

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0630
C0630
D0640

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03960
B03960
C03960
D03960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0436984
B0388404
C0409934
D0473544

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19350790.408269%
B19350240.124031%
C193501060.547804%
D193505782.987080%

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 23498 19353 42 42 0.18% 0.22%
B 23498 19353 0 0 0.00% 0.00%
C 23498 19353 91 91 0.39% 0.47%
D 23498 19353 531 531 2.26% 2.74%

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 1515308 3515.91 2118 2073 430.4
A 12 189 1017409 2359.07 2118 2073 430.4
A 13 254 24659 52.48 2118 2073 430.4
B 12 111 52445 124.64 2090 2026 404.5
B 0 190 51249 121.68 2090 2026 404.5
B 11 111 49148 116.49 2090 2026 404.5
C 15 214 880833 1842.25 2056 2066 477.0
C 14 254 587785 1227.9 2056 2066 477.0
C 0 10 113346 233.29 2056 2066 477.0
D 2 249 1388005 2820.21 2043 1985 491.5
D 13 249 1179743 2396.45 2043 1985 491.5
D 12 233 468892 950.04 2043 1985 491.5

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