ASTROSAT CZTI

Data Quality Report

Orbit 36391

Creation date: 2022-06-21T22:11:42.356084
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_097T24_9000005196_36391cztM0_level2.evt modeM0/AS1A11_097T24_9000005196_36391cztM0_level2_quad_clean.evt
Size (bytes)484,626,24061,868,160
Size462.2 MB 59.0 MB
Events in quadrant A3,242,234374,754
Events in quadrant B3,539,436370,923
Events in quadrant C3,309,372353,425
Events in quadrant D4,160,739336,542

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131911
B0142411
C0132271
D0164101

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A626380.127734%
B6263440.702539%
C6263340.542871%
D62631883.001756%

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 8115 6264 1 1 0.01% 0.02%
B 8115 6264 19 19 0.23% 0.30%
C 8115 6264 21 21 0.26% 0.34%
D 8115 6264 180 180 2.22% 2.87%

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 157979 999.73 787 775 157.2
A 7 3 14676 88.4 787 775 157.2
A 13 254 11004 65.05 787 775 157.2
B 5 172 141138 960.35 771 753 146.2
B 0 189 110735 752.37 771 753 146.2
B 4 232 80354 544.54 771 753 146.2
C 15 214 259537 1496.68 750 758 172.9
C 0 10 106539 611.8 750 758 172.9
C 0 207 12711 69.13 750 758 172.9
D 12 6 688950 3783.62 751 733 181.9
D 12 227 164116 898.23 751 733 181.9
D 2 250 93527 510.15 751 733 181.9

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