ASTROSAT CZTI

Data Quality Report

Orbit 20210701_A10_071T66_9000004498_level2

Creation date: 2021-07-17T17:02:32.280287
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_071T66_9000004498cztM0_level2_bc.evt modeM0/AS1A10_071T66_9000004498cztM0_level2_quad_clean.evt
Size (bytes)2,158,329,600521,184,960
Size2.0 GB 497.0 MB
Events in quadrant A8,493,1303,356,909
Events in quadrant B20,657,1493,324,835
Events in quadrant C9,678,8403,215,988
Events in quadrant D23,727,1283,050,213

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0854250
B01269430
C0904760
D01372300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08420
B08420
C08420
D08420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A413294341.050110%
B413299242.235718%
C413299582.317985%
D4132921645.236033%

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 46444 41329 8 8 0.02% 0.02%
B 46444 41331 4 4 0.01% 0.01%
C 46444 41329 42 42 0.09% 0.10%
D 46444 41329 176 176 0.38% 0.43%

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 12 96 91199 188.99 2159 2118 471.4
A 13 254 77721 160.39 2159 2118 471.4
A 11 47 29650 58.41 2159 2118 471.4
B 6 159 11247258 27086.79 2159 2105 415.2
B 0 183 351962 842.72 2159 2105 415.2
B 0 190 346165 828.76 2159 2105 415.2
C 0 10 697539 1413.04 2067 2055 492.2
C 15 208 383846 775.7 2067 2055 492.2
C 3 233 276729 558.06 2067 2055 492.2
D 8 195 12334386 23396.71 2062 2007 527.1
D 13 174 1399568 2651.42 2062 2007 527.1
D 2 250 995722 1885.25 2062 2007 527.1

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