ASTROSAT CZTI

Data Quality Report

Orbit 20220228_C07_001T01_9000004982_level2

Creation date: 2022-03-16T12:03:55.234061
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/AS1C07_001T01_9000004982cztM0_level2_bc.evt modeM0/AS1C07_001T01_9000004982cztM0_level2_quad_clean.evt
Size (bytes)4,247,256,9601,362,214,080
Size4.0 GB 1.3 GB
Events in quadrant A26,386,2239,039,340
Events in quadrant B20,792,3739,171,714
Events in quadrant C21,311,5529,167,713
Events in quadrant D54,633,9078,325,910

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01995340
B01784690
C01707610
D02953160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016560
B016500
C016560
D016480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03010
B03010
C03010
D03010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8112920312.503420%
B8108411391.404716%
C811515110.629690%
D8096668808.497394%

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 111306 81349 29 29 0.03% 0.04%
B 111306 81295 166 166 0.15% 0.20%
C 111306 81328 75 75 0.07% 0.09%
D 111306 81201 1076 1076 0.97% 1.33%

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 15 169 8602394 9412.97 4123 4070 913.5
A 10 83 494403 536.79 4123 4070 913.5
A 9 143 401845 435.46 4123 4070 913.5
B 5 172 2700528 3267.27 4170 4089 825.3
B 4 171 436144 523.52 4170 4089 825.3
B 4 232 286989 342.79 4170 4089 825.3
C 15 214 3261927 3459.04 4088 4067 941.8
C 0 10 1056468 1117.39 4088 4067 941.8
C 0 207 430721 453.0 4088 4067 941.8
D 8 195 15165933 14562.41 3933 3831 1041.2
D 2 250 7186594 6898.67 3933 3831 1041.2
D 1 20 5334864 5120.18 3933 3831 1041.2

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