ASTROSAT CZTI

Data Quality Report

Orbit 34981

Creation date: 2022-03-19T17:52:31.072442
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_123T09_9000005012_34981cztM0_level2.evt modeM0/AS1A10_123T09_9000005012_34981cztM0_level2_quad_clean.evt
Size (bytes)1,213,608,960166,204,800
Size1.1 GB 158.5 MB
Events in quadrant A6,835,7611,015,964
Events in quadrant B10,012,7971,016,520
Events in quadrant C7,508,0091,017,780
Events in quadrant D11,397,001959,502

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03020
B03020
C03020
D03020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300804
B0393833
C0308603
D0438973

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14833140.094384%
B148339826.620373%
C14833520.350570%
D148332551.719140%

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 19162 14836 4 4 0.02% 0.03%
B 19162 14836 761 761 3.97% 5.13%
C 19162 14836 43 43 0.22% 0.29%
D 19162 14836 209 209 1.09% 1.41%

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 137961 396.57 1717 1675 343.7
A 9 143 45260 126.82 1717 1675 343.7
A 13 254 24150 65.4 1717 1675 343.7
B 5 172 2781618 8695.36 1662 1617 319.7
B 5 255 283475 881.6 1662 1617 319.7
B 0 190 208442 646.91 1662 1617 319.7
C 15 214 608228 1566.22 1675 1687 387.3
C 0 10 119491 304.2 1675 1687 387.3
C 14 67 102973 261.54 1675 1687 387.3
D 8 195 3312860 8202.06 1663 1616 403.7
D 13 249 430770 1063.03 1663 1616 403.7
D 2 249 341010 840.69 1663 1616 403.7

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