ASTROSAT CZTI

Data Quality Report

Orbit 36359

Creation date: 2022-06-22T13:49:46.033529
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_9000005194_36359cztM0_level2.evt modeM0/AS1A11_097T17_9000005194_36359cztM0_level2_quad_clean.evt
Size (bytes)459,086,40086,748,480
Size437.8 MB 82.7 MB
Events in quadrant A2,757,522571,898
Events in quadrant B3,162,128572,855
Events in quadrant C3,033,182567,557
Events in quadrant D4,571,003523,524

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118463
B0130042
C0123302
D0172832

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5592140.250358%
B5592581.037196%
C5592430.768956%
D55923636.491416%

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 8938 5594 1 1 0.01% 0.02%
B 8938 5594 32 32 0.36% 0.57%
C 8938 5594 28 28 0.31% 0.50%
D 8938 5593 356 356 3.98% 6.37%

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 187360 1415.88 656 643 131.9
A 12 189 23709 174.91 656 643 131.9
A 9 143 9910 70.27 656 643 131.9
B 5 172 360064 2886.19 645 627 124.5
B 5 236 129101 1031.61 645 627 124.5
B 0 183 32838 258.65 645 627 124.5
C 0 10 296208 1986.75 635 639 148.8
C 15 214 238102 1596.17 635 639 148.8
C 0 207 24555 160.76 635 639 148.8
D 12 6 946070 6255.9 621 602 151.1
D 13 171 458051 3026.81 621 602 151.1
D 2 249 363449 2400.86 621 602 151.1

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