ASTROSAT CZTI

Data Quality Report

Orbit 20240510_A13_092T08_9000006236_level2

Creation date: 2024-05-11T08:51:54.584526
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_092T08_9000006236cztM0_level2.fits modeM0/AS1A13_092T08_9000006236cztM0_level2_quad_clean.evt
Size (bytes)234,521,280230,880,960
Size223.7 MB 220.2 MB
Events in quadrant A1,379,0101,367,715
Events in quadrant B1,357,0661,413,431
Events in quadrant C1,412,4981,356,518
Events in quadrant D1,072,260974,767

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05560
B05560
C05560
D05560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0978460
B0626460
C0589460
D01101930

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2731010043.676309%
B273145702.086842%
C273133151.153297%
D27306589521.588662%

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 28735 27313 0 0 0.00% 0.00%
B 28735 27315 0 0 0.00% 0.00%
C 28734 27313 0 0 0.00% 0.00%
D 28735 27206 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 7 110 1128 8.42 359 335 94.2
A 0 29 1092 8.04 359 335 94.2
A 0 30 1029 7.37 359 335 94.2
B 2 9 1255 12.42 359 341 73.6
B 2 8 1042 9.52 359 341 73.6
B 3 17 982 8.71 359 341 73.6
C 1 81 1070 7.32 373 345 99.0
C 3 202 1068 7.3 373 345 99.0
C 3 158 1048 7.1 373 345 99.0
D 3 159 798 5.98 308 278 87.0
D 12 6 795 5.94 308 278 87.0
D 6 38 789 5.87 308 278 87.0

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