ASTROSAT CZTI

Data Quality Report

Orbit 33147

Creation date: 2024-06-27T20:45:26.215422
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_096T01_9000004766_33147cztM0_level2.evt modeM0/AS1A11_096T01_9000004766_33147cztM0_level2_quad_clean.evt
Size (bytes)544,069,44054,555,840
Size518.9 MB 52.0 MB
Events in quadrant A2,884,872328,244
Events in quadrant B3,931,510328,400
Events in quadrant C3,293,310314,893
Events in quadrant D6,001,959301,862

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117373
B0151562
C0129712
D0217602

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A540260.111070%
B54023085.701592%
C5402961.777120%
D540269112.791559%

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 7405 5403 1 1 0.01% 0.02%
B 7405 5403 197 197 2.66% 3.65%
C 7405 5403 80 80 1.08% 1.48%
D 7405 5403 537 537 7.25% 9.94%

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 0 47 19167 127.28 737 726 144.9
A 13 254 9985 63.9 737 726 144.9
A 13 6 7391 46.0 737 726 144.9
B 5 172 786766 5976.0 709 694 131.5
B 0 219 214688 1626.86 709 694 131.5
B 0 190 22845 168.4 709 694 131.5
C 0 10 246387 1564.06 693 701 157.1
C 9 187 221383 1404.88 693 701 157.1
C 1 241 75399 475.53 693 701 157.1
D 12 233 1057371 6403.31 673 660 165.0
D 8 195 1013771 6139.11 673 660 165.0
D 2 250 315323 1906.75 673 660 165.0

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