ASTROSAT CZTI

Data Quality Report

Orbit 36440

Creation date: 2022-07-19T04:21:51.063956
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/AS1C07_009T01_9000005200_36440cztM0_level2.evt modeM0/AS1C07_009T01_9000005200_36440cztM0_level2_quad_clean.evt
Size (bytes)484,456,32096,598,080
Size462.0 MB 92.1 MB
Events in quadrant A2,939,481639,785
Events in quadrant B4,602,515630,236
Events in quadrant C3,527,853618,873
Events in quadrant D3,182,543605,369

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127473
B0178412
C0142182
D0137762

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6173150.242994%
B61735078.213186%
C61731412.284141%
D6173771.247368%

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 8889 6175 1 1 0.01% 0.02%
B 8889 6175 285 285 3.21% 4.62%
C 8889 6175 94 94 1.06% 1.52%
D 8889 6175 59 59 0.66% 0.96%

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 205008 1444.15 699 684 141.5
A 10 255 17956 122.07 699 684 141.5
A 13 254 11803 78.59 699 684 141.5
B 5 172 1114092 8678.69 667 648 128.3
B 5 255 401381 3123.5 667 648 128.3
B 0 189 157787 1224.81 667 648 128.3
C 0 10 312170 2008.05 672 675 155.1
C 0 207 310211 1995.42 672 675 155.1
C 15 214 262143 1685.55 672 675 155.1
D 13 171 114276 687.38 680 660 165.3
D 10 118 107214 644.65 680 660 165.3
D 2 250 104999 631.25 680 660 165.3

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