ASTROSAT CZTI

Data Quality Report

Orbit 20073

Creation date: 2024-06-27T18:10:54.120875
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_120T01_9000002990_20073cztM0_level2.evt modeM0/AS1T03_120T01_9000002990_20073cztM0_level2_quad_clean.evt
Size (bytes)572,068,800103,334,400
Size545.6 MB 98.5 MB
Events in quadrant A3,545,260709,663
Events in quadrant B3,542,474711,687
Events in quadrant C3,216,495692,051
Events in quadrant D6,601,198583,258

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143261
B0143921
C0133601
D0238623

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61951842.970137%
B61961372.211104%
C61961081.743060%
D6195117118.902341%

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 7310 6196 80 80 1.09% 1.29%
B 7311 6197 44 44 0.60% 0.71%
C 7311 6197 0 0 0.00% 0.00%
D 7310 6196 1105 1105 15.12% 17.83%

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 14 238 350785 2137.76 811 798 163.7
A 4 2 56254 338.73 811 798 163.7
A 14 254 8330 46.01 811 798 163.7
B 7 220 198433 1292.17 807 790 153.0
B 4 80 100209 649.99 807 790 153.0
B 12 111 16783 104.56 807 790 153.0
C 14 238 126666 692.44 788 795 181.8
C 4 175 7857 38.85 788 795 181.8
C 3 233 7603 37.45 788 795 181.8
D 7 38 2761997 15543.55 733 713 177.6
D 1 52 895358 5036.05 733 713 177.6
D 12 218 152633 855.17 733 713 177.6

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