ASTROSAT CZTI

Data Quality Report

Orbit 35447

Creation date: 2022-04-20T23:16:40.515563
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/AS1A11_097T17_9000005074_35447cztM0_level2.evt modeM0/AS1A11_097T17_9000005074_35447cztM0_level2_quad_clean.evt
Size (bytes)460,621,44080,723,520
Size439.3 MB 77.0 MB
Events in quadrant A2,714,446508,923
Events in quadrant B4,142,551515,374
Events in quadrant C3,317,238524,169
Events in quadrant D3,387,375495,906

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118403
B0163472
C0135322
D0140272

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A572380.139787%
B5723851.485235%
C5723641.118295%
D57231823.180150%

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 9099 5725 0 0 0.00% 0.00%
B 9099 5725 19 19 0.21% 0.33%
C 9099 5725 42 42 0.46% 0.73%
D 9099 5723 133 133 1.46% 2.32%

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 10 83 126854 951.16 665 650 132.7
A 13 6 9557 67.13 665 650 132.7
A 3 137 7084 48.49 665 650 132.7
B 4 251 1299491 10219.0 664 645 127.1
B 5 172 115635 904.71 664 645 127.1
B 5 236 63768 496.64 664 645 127.1
C 15 214 237071 1558.92 657 661 151.6
C 1 23 213862 1405.87 657 661 151.6
C 0 10 198969 1307.67 657 661 151.6
D 7 80 401152 2588.43 642 626 154.7
D 13 249 241526 1556.83 642 626 154.7
D 2 153 97630 626.9 642 626 154.7

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