ASTROSAT CZTI

Data Quality Report

Orbit 31936

Creation date: 2024-06-27T20:34:34.420768
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/AS1C06_010T03_9000004658_31936cztM0_level2.evt modeM0/AS1C06_010T03_9000004658_31936cztM0_level2_quad_clean.evt
Size (bytes)760,406,400106,191,360
Size725.2 MB 101.3 MB
Events in quadrant A3,286,244764,299
Events in quadrant B6,609,566715,135
Events in quadrant C5,540,345697,524
Events in quadrant D7,205,880636,178

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01266
B01255
C01244
D01277

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D062

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014362908
B0247721263
C0220451463
D0283533083

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5750440.765217%
B573991715.978393%
C572676413.342648%
D5714159727.948897%

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 7353 5782 20 20 0.27% 0.35%
B 7353 5768 590 590 8.02% 10.23%
C 7353 5746 172 172 2.34% 2.99%
D 7352 5717 1377 1377 18.73% 24.09%

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 12 96 589955 4239.69 695 682 139.0
A 13 254 10918 73.65 695 682 139.0
A 13 6 8184 53.98 695 682 139.0
B 5 255 2162587 17600.76 654 639 122.8
B 6 159 1644962 13386.69 654 639 122.8
B 5 172 115658 936.39 654 639 122.8
C 3 233 2762332 18423.84 640 643 149.9
C 0 10 127495 846.26 640 643 149.9
C 14 238 107323 711.69 640 643 149.9
D 12 33 2795741 19381.06 603 586 144.2
D 8 195 941182 6521.91 603 586 144.2
D 13 249 753287 5219.08 603 586 144.2

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