ASTROSAT CZTI

Data Quality Report

Orbit 17725

Creation date: 2024-06-27T17:40:03.755535
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/AS1T03_042T01_9000002630_17725cztM0_level2.evt modeM0/AS1T03_042T01_9000002630_17725cztM0_level2_quad_clean.evt
Size (bytes)1,621,419,840196,709,760
Size1.5 GB 187.6 MB
Events in quadrant A8,709,0221,236,978
Events in quadrant B8,602,8411,257,852
Events in quadrant C8,667,3761,208,058
Events in quadrant D21,910,6741,011,863

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0382003
B0373013
C0370223
D0771713

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03660
C03660
D03660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A180112601.443562%
B180111951.082672%
C180122151.193649%
D18012431923.978459%

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 20066 18012 42 42 0.21% 0.23%
B 20066 18012 24 24 0.12% 0.13%
C 20067 18015 0 0 0.00% 0.00%
D 20067 18013 3884 3884 19.36% 21.56%

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 15 174 500786 1162.96 2126 2075 428.8
A 0 226 18833 39.08 2126 2075 428.8
A 12 194 16691 34.08 2126 2075 428.8
B 10 245 166398 404.33 2127 2070 406.4
B 12 111 49765 117.35 2127 2070 406.4
B 11 111 43577 102.13 2127 2070 406.4
C 14 238 316408 658.72 2044 2052 477.2
C 3 233 264413 549.77 2044 2052 477.2
C 5 218 110028 226.26 2044 2052 477.2
D 7 238 13989178 28008.29 1842 1802 499.4
D 13 232 269028 535.09 1842 1802 499.4
D 7 222 156183 309.13 1842 1802 499.4

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