ASTROSAT CZTI

Data Quality Report

Orbit 44098

Creation date: 2024-06-27T22:59:22.378245
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/AS1A13_038T01_9000005944_44098cztM0_level2.fits modeM0/AS1A13_038T01_9000005944_44098cztM0_level2_quad_clean.evt
Size (bytes)721,460,16085,740,480
Size688.0 MB 81.8 MB
Events in quadrant A13,094,50523,166
Events in quadrant B3,580,798773,293
Events in quadrant C3,041,301747,243
Events in quadrant D6,488,571604,016

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0433485
B0150872
C0135882
D0238142

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6427626897.526062%
B64272013.127431%
C6427380.591256%
D642786813.505524%

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 7602 6425 3383 3383 44.50% 52.65%
B 7602 6428 59 59 0.78% 0.92%
C 7602 6428 7 7 0.09% 0.11%
D 7602 6428 689 689 9.06% 10.72%

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 15 223 12154509 354749.96 158 155 34.3
A 10 83 299871 8747.83 158 155 34.3
A 15 222 11400 328.21 158 155 34.3
B 4 171 417162 2849.8 748 725 146.1
B 15 36 63302 428.23 748 725 146.1
B 0 245 26934 179.36 748 725 146.1
C 14 96 76095 427.56 741 748 176.2
C 14 254 72319 406.13 741 748 176.2
C 3 233 5392 26.35 741 748 176.2
D 1 52 1966319 11375.1 683 664 172.8
D 5 222 633770 3663.74 683 664 172.8
D 13 249 413297 2387.88 683 664 172.8

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