ASTROSAT CZTI

Data Quality Report

Orbit 30449

Creation date: 2024-06-27T20:15:23.000318
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_121T02_9000004378_30449cztM0_level2.evt modeM0/AS1A10_121T02_9000004378_30449cztM0_level2_quad_clean.evt
Size (bytes)77,446,08021,873,600
Size73.9 MB 20.9 MB
Events in quadrant A1,010,423255,760
Events in quadrant B5,959844
Events in quadrant C663,482150,514
Events in quadrant D573,885158,478

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01528310696
B02249722477
C02255919884
D03376831020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014011741073693646
B0-1-1
C0-1-1
D0-1-1

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B1130
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A229530.130719%
B1000.000000%
C133990.672143%
D137500.000000%

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 15663 4557 0 0 0.00% 0.00%
B 10901 18 0 0 0.00% 0.00%
C 15660 2670 0 0 0.00% 0.00%
D 14461 2705 0 0 0.00% 0.00%

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 4460 77.42 260 254 54.3
A 3 137 2668 44.44 260 254 54.3
A 4 2 2567 42.58 260 254 54.3
B 6 159 2003 3947.2 1 1 0.5
B 0 229 101 197.16 1 1 0.5
B 12 111 21 39.43 1 1 0.5
C 3 233 93027 2675.34 139 139 34.7
C 14 238 22431 642.04 139 139 34.7
C 2 114 2981 81.84 139 139 34.7
D 8 195 32988 934.22 140 137 35.2
D 13 104 6546 182.26 140 137 35.2
D 2 234 4821 133.2 140 137 35.2

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