ASTROSAT CZTI

Data Quality Report

Orbit 27775

Creation date: 2024-06-27T19:44:14.231913
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_009T02_9000004014_27775cztM0_level2.evt modeM0/AS1A10_009T02_9000004014_27775cztM0_level2_quad_clean.evt
Size (bytes)606,539,520114,600,960
Size578.4 MB 109.3 MB
Events in quadrant A3,231,649809,705
Events in quadrant B3,572,799818,442
Events in quadrant C3,718,260753,676
Events in quadrant D7,414,364643,884

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137161
B0147491
C0152941
D0263021

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6375641.003922%
B6375831.301961%
C63751512.368627%
D6375148123.231373%

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 7545 6375 0 0 0.00% 0.00%
B 7545 6375 11 11 0.15% 0.17%
C 7545 6375 26 26 0.34% 0.41%
D 7545 6375 1392 1392 18.45% 21.84%

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 13 254 11173 61.86 837 822 167.3
A 3 137 7524 40.05 837 822 167.3
A 0 226 7182 38.01 837 822 167.3
B 3 64 174781 1109.68 826 809 156.8
B 4 52 96031 607.38 826 809 156.8
B 0 190 43170 270.2 826 809 156.8
C 3 233 529306 2907.37 776 781 181.8
C 14 238 126388 690.95 776 781 181.8
C 10 22 27758 148.4 776 781 181.8
D 1 52 4710282 29003.53 683 666 162.4
D 2 250 79751 487.03 683 666 162.4
D 2 234 22452 134.17 683 666 162.4

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