ASTROSAT CZTI

Data Quality Report

Orbit 20210728_A10_056T01_9000004598_level2

Creation date: 2021-07-31T13:23:17.753378
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/AS1A10_056T01_9000004598cztM0_level2_bc.evt modeM0/AS1A10_056T01_9000004598cztM0_level2_quad_clean.evt
Size (bytes)9,923,011,2003,043,281,600
Size9.2 GB 2.8 GB
Events in quadrant A48,194,67219,729,857
Events in quadrant B107,359,76219,963,946
Events in quadrant C53,202,76019,151,978
Events in quadrant D77,294,87318,741,240

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04568030
B06596500
C04765020
D05372290

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03630
B03630
C03640
D03640

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A043480
B043500
C043480
D043480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A21310341771.960085%
B21309159172.776748%
C21309462832.948464%
D21310744922.107861%

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 259686 213119 82 82 0.03% 0.04%
B 259686 213107 37 37 0.01% 0.02%
C 259686 213111 214 214 0.08% 0.10%
D 259686 213115 152 152 0.06% 0.07%

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 0 13 3859778 1560.56 11438 11279 2466.1
A 13 254 360770 141.72 11438 11279 2466.1
A 5 168 118160 43.34 11438 11279 2466.1
B 6 159 56064858 25579.98 11591 11338 2191.3
B 4 80 3845812 1749.86 11591 11338 2191.3
B 0 190 963918 434.71 11591 11338 2191.3
C 3 233 4649819 1780.55 11028 11020 2605.3
C 10 22 3573257 1367.32 11028 11020 2605.3
C 0 10 1126876 428.31 11028 11020 2605.3
D 8 195 25916830 10093.76 11229 10889 2566.5
D 12 218 2870135 1114.05 11229 10889 2566.5
D 2 250 1740790 674.02 11229 10889 2566.5

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