ASTROSAT CZTI

Data Quality Report

Orbit 20374

Creation date: 2024-06-27T18:14:34.241507
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/AS1A05_205T01_9000003012_20374cztM0_level2.evt modeM0/AS1A05_205T01_9000003012_20374cztM0_level2_quad_clean.evt
Size (bytes)1,210,023,360248,529,600
Size1.1 GB 237.0 MB
Events in quadrant A8,607,4671,603,607
Events in quadrant B9,280,7321,613,369
Events in quadrant C8,393,2061,554,616
Events in quadrant D9,147,0011,516,063

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03660
C03660
D03660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0373504
B0390623
C0366983
D0393413

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A179912291.272859%
B179923021.678524%
C179922571.428413%
D179923121.734104%

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 19996 17991 51 51 0.26% 0.28%
B 19997 17992 63 63 0.32% 0.35%
C 19997 17993 0 0 0.00% 0.00%
D 19997 17992 152 152 0.76% 0.84%

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 5 16 279368 638.16 2157 2110 434.5
A 0 226 18640 38.05 2157 2110 434.5
A 3 137 17843 36.21 2157 2110 434.5
B 7 220 389816 937.63 2149 2094 413.5
B 0 197 108186 256.56 2149 2094 413.5
B 0 198 105762 250.7 2149 2094 413.5
C 14 238 323614 665.92 2060 2075 482.9
C 13 61 14430 25.59 2060 2075 482.9
C 8 128 11981 20.52 2060 2075 482.9
D 1 52 553907 1088.0 2089 2028 507.2
D 13 138 242519 474.12 2089 2028 507.2
D 13 153 150476 292.66 2089 2028 507.2

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