ASTROSAT CZTI

Data Quality Report

Orbit 32427

Creation date: 2024-06-27T20:40:04.487154
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/AS1A09_108T02_9000004706_32427cztM0_level2.evt modeM0/AS1A09_108T02_9000004706_32427cztM0_level2_quad_clean.evt
Size (bytes)623,229,12099,273,600
Size594.4 MB 94.7 MB
Events in quadrant A3,529,219629,895
Events in quadrant B6,208,361650,701
Events in quadrant C4,442,637609,755
Events in quadrant D4,199,403606,937

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153153
B0234772
C0179192
D0175182

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7313420.574320%
B73132903.965541%
C73133494.772323%
D7313941.285382%

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 9299 7316 0 0 0.00% 0.00%
B 9299 7316 7 7 0.08% 0.10%
C 9299 7316 69 69 0.74% 0.94%
D 9299 7316 26 26 0.28% 0.36%

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 6 13604 69.57 910 893 182.7
A 13 254 12951 65.99 910 893 182.7
A 3 137 9340 46.23 910 893 182.7
B 6 159 1958970 11343.93 909 887 172.6
B 4 80 512253 2962.54 909 887 172.6
B 0 183 117335 674.63 909 887 172.6
C 3 233 477122 2321.0 871 875 205.2
C 0 10 331474 1611.18 871 875 205.2
C 14 238 143628 695.71 871 875 205.2
D 8 195 484943 2306.07 884 860 209.9
D 12 233 135014 639.08 884 860 209.9
D 2 250 112767 533.1 884 860 209.9

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