ASTROSAT CZTI

Data Quality Report

Orbit 35236

Creation date: 2022-04-04T22:29:02.049847
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/AS1C07_004T01_9000005052_35236cztM0_level2.evt modeM0/AS1C07_004T01_9000005052_35236cztM0_level2_quad_clean.evt
Size (bytes)717,333,12069,537,600
Size684.1 MB 66.3 MB
Events in quadrant A2,560,041472,351
Events in quadrant B8,922,168363,172
Events in quadrant C2,982,637466,825
Events in quadrant D6,896,474425,263

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110842
B0302461
C0123451
D0243211

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A538470.130015%
B5384253947.158247%
C5384260.482912%
D53844348.060921%

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 7206 5385 1 1 0.01% 0.02%
B 7206 5385 1883 1883 26.13% 34.97%
C 7206 5385 16 16 0.22% 0.30%
D 7206 5385 565 565 7.84% 10.49%

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 84034 661.76 625 615 126.1
A 9 143 41327 322.97 625 615 126.1
A 13 6 10786 80.69 625 615 126.1
B 5 236 6128697 63652.17 500 489 96.3
B 5 172 746672 7750.42 500 489 96.3
B 5 200 28663 292.64 500 489 96.3
C 0 10 267484 1918.72 599 605 139.1
C 15 214 225936 1620.01 599 605 139.1
C 10 49 114004 815.28 599 605 139.1
D 8 195 2846501 19769.19 588 572 144.0
D 1 47 799125 5547.13 588 572 144.0
D 2 250 275124 1907.17 588 572 144.0

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