ASTROSAT CZTI

Data Quality Report

Orbit 34962

Creation date: 2022-07-18T19:58:44.435356
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_047T09_9000005010_34962cztM0_level2.evt modeM0/AS1A11_047T09_9000005010_34962cztM0_level2_quad_clean.evt
Size (bytes)486,645,12055,149,120
Size464.1 MB 52.6 MB
Events in quadrant A2,736,161328,968
Events in quadrant B3,682,203325,669
Events in quadrant C3,043,771325,944
Events in quadrant D4,888,096289,159

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119033
B0146712
C0124712
D0184112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5716250.437369%
B57162865.003499%
C5716400.699790%
D571659910.479356%

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 7179 5717 16 16 0.22% 0.28%
B 7179 5717 213 213 2.97% 3.73%
C 7179 5717 33 33 0.46% 0.58%
D 7179 5717 550 550 7.66% 9.62%

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 77923 579.87 657 643 133.3
A 10 83 72210 537.0 657 643 133.3
A 9 143 24624 179.94 657 643 133.3
B 5 172 930453 7382.49 643 626 126.0
B 0 190 91364 720.43 643 626 126.0
B 10 245 80589 634.88 643 626 126.0
C 15 214 241735 1591.88 640 642 151.5
C 12 250 137058 900.72 640 642 151.5
C 0 10 132212 868.72 640 642 151.5
D 8 195 730912 4831.91 609 592 151.1
D 10 118 601930 3978.54 609 592 151.1
D 1 52 564214 3729.01 609 592 151.1

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