ASTROSAT CZTI

Data Quality Report

Orbit 20220219_A05_176T05_9000004944_level2

Creation date: 2022-02-22T22:24:27.677519
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/AS1A05_176T05_9000004944cztM0_level2_bc.evt modeM0/AS1A05_176T05_9000004944cztM0_level2_quad_clean.evt
Size (bytes)498,504,96096,099,840
Size475.4 MB 91.6 MB
Events in quadrant A1,675,768615,377
Events in quadrant B2,136,687616,550
Events in quadrant C2,140,074620,242
Events in quadrant D8,622,382529,465

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155890
B0173460
C0164820
D0398360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7596120.157978%
B7596961.263823%
C7596490.645076%
D7596166221.879937%

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 11662 7597 0 0 0.00% 0.00%
B 11662 7596 2 2 0.02% 0.03%
C 11662 7596 12 12 0.10% 0.16%
D 11662 7596 390 390 3.34% 5.13%

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 46413 507.39 404 397 90.7
A 9 143 25551 277.36 404 397 90.7
A 13 254 14695 157.65 404 397 90.7
B 5 172 315458 3864.34 403 395 81.5
B 0 189 124106 1517.35 403 395 81.5
B 0 190 55936 681.23 403 395 81.5
C 15 214 304037 3297.9 397 395 92.1
C 0 10 94249 1019.36 397 395 92.1
C 0 207 90880 982.77 397 395 92.1
D 8 195 5219385 56317.91 368 356 92.7
D 1 52 638014 6880.89 368 356 92.7
D 5 223 375902 4052.47 368 356 92.7

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