ASTROSAT CZTI

Data Quality Report

Orbit 36381

Creation date: 2022-06-21T11:03:55.035225
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_097T24_9000005196_36381cztM0_level2.evt modeM0/AS1A11_097T24_9000005196_36381cztM0_level2_quad_clean.evt
Size (bytes)534,755,52073,451,520
Size510.0 MB 70.0 MB
Events in quadrant A3,173,255475,745
Events in quadrant B5,608,216437,796
Events in quadrant C2,998,556468,488
Events in quadrant D4,025,883440,697

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131143
B0204352
C0123492
D0159742

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57311402.442855%
B5731116820.380387%
C5731611.064387%
D57313335.810504%

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 7162 5732 113 113 1.58% 1.97%
B 7162 5732 1016 1016 14.19% 17.73%
C 7162 5732 38 38 0.53% 0.66%
D 7162 5732 315 315 4.40% 5.50%

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 15 223 452910 3459.05 648 637 130.8
A 10 83 184476 1406.03 648 637 130.8
A 13 6 11003 79.28 648 637 130.8
B 5 172 3028006 26829.76 581 565 112.8
B 4 171 171552 1515.32 581 565 112.8
B 5 255 68646 603.35 581 565 112.8
C 15 214 243117 1648.19 633 639 147.1
C 0 10 185815 1258.69 633 639 147.1
C 4 254 95381 643.99 633 639 147.1
D 12 16 462915 3085.27 615 598 149.8
D 13 249 449671 2996.89 615 598 149.8
D 12 6 235421 1567.09 615 598 149.8

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