ASTROSAT CZTI

Data Quality Report

Orbit 35966

Creation date: 2022-06-09T06:17:48.603633
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/AS1A11_080T01_9000005146_35966cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35966cztM0_level2_quad_clean.evt
Size (bytes)2,245,374,720232,436,160
Size2.1 GB 221.7 MB
Events in quadrant A8,169,6391,752,875
Events in quadrant B34,216,009993,999
Events in quadrant C14,179,9921,596,850
Events in quadrant D10,391,3851,617,981

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0341094
B01122754
C0519014
D0411634

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15570490.314708%
B155701224378.631985%
C15570227814.630700%
D155704662.992935%

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 21060 15574 24 24 0.11% 0.15%
B 21059 15571 11588 11588 55.03% 74.42%
C 21060 15573 1925 1925 9.14% 12.36%
D 21060 15574 439 439 2.08% 2.82%

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 15 169 546478 1435.61 1856 1819 379.4
A 10 83 398972 1046.81 1856 1819 379.4
A 13 6 28221 69.59 1856 1819 379.4
B 5 31 9205027 44462.11 1072 1049 207.0
B 5 15 9096193 43936.36 1072 1049 207.0
B 5 14 7752824 37446.88 1072 1049 207.0
C 9 187 4014712 10243.76 1674 1696 391.8
C 0 207 2618818 6680.56 1674 1696 391.8
C 15 214 604653 1539.13 1674 1696 391.8
D 12 17 840427 1907.47 1783 1740 439.7
D 13 249 550753 1248.65 1783 1740 439.7
D 2 250 404125 915.16 1783 1740 439.7

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