ASTROSAT CZTI

Data Quality Report

Orbit 34441

Creation date: 2022-02-10T05:29:29.600783
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_058T05_9000004918_34441cztM0_level2.evt modeM0/AS1A10_058T05_9000004918_34441cztM0_level2_quad_clean.evt
Size (bytes)507,277,44079,421,760
Size483.8 MB 75.7 MB
Events in quadrant A2,638,972517,970
Events in quadrant B3,169,810522,902
Events in quadrant C3,219,293507,980
Events in quadrant D5,947,619456,489

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116513
B0131312
C0128732
D0217052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A571440.070004%
B57141642.870144%
C5714801.400070%
D57144417.717886%

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 7117 5715 1 1 0.01% 0.02%
B 7117 5715 119 119 1.67% 2.08%
C 7117 5715 69 69 0.97% 1.21%
D 7117 5715 423 423 5.94% 7.40%

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 36212 265.49 669 656 133.9
A 13 254 10182 71.13 669 656 133.9
A 10 255 7707 52.65 669 656 133.9
B 5 172 390803 3034.2 661 643 128.6
B 0 229 61064 469.88 661 643 128.6
B 5 31 56190 431.98 661 643 128.6
C 15 214 240766 1582.25 651 657 151.8
C 14 254 223812 1470.53 651 657 151.8
C 0 10 180328 1183.98 651 657 151.8
D 8 195 1942858 12460.54 633 615 155.9
D 7 80 854478 5477.99 633 615 155.9
D 10 118 405394 2596.88 633 615 155.9

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