ASTROSAT CZTI

Data Quality Report

Orbit 34547

Creation date: 2022-02-17T10:17:18.143014
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_115T02_9000004934_34547cztM0_level2.evt modeM0/AS1A05_115T02_9000004934_34547cztM0_level2_quad_clean.evt
Size (bytes)956,030,400158,339,520
Size911.7 MB 151.0 MB
Events in quadrant A5,689,413990,148
Events in quadrant B6,755,611996,486
Events in quadrant C6,147,1941,006,039
Events in quadrant D9,527,888950,012

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02500
B02500
C02500
D02500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254973
B0285843
C0259263
D0367613

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12339360.291758%
B123392932.374585%
C12339300.243132%
D123391961.588459%

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 14994 12341 13 13 0.09% 0.11%
B 14994 12341 161 161 1.07% 1.30%
C 14994 12341 12 12 0.08% 0.10%
D 14994 12341 112 112 0.75% 0.91%

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 9 143 136032 479.69 1405 1378 280.7
A 10 83 66266 231.16 1405 1378 280.7
A 10 255 24623 82.81 1405 1378 280.7
B 5 172 989992 3712.11 1389 1351 266.3
B 5 200 59888 219.79 1389 1351 266.3
B 4 232 55167 202.06 1389 1351 266.3
C 15 214 548480 1735.57 1366 1376 315.2
C 14 67 127850 401.21 1366 1376 315.2
C 0 10 80874 252.19 1366 1376 315.2
D 8 195 3150062 9441.1 1358 1321 333.5
D 1 52 340946 1018.32 1358 1321 333.5
D 7 223 161709 480.9 1358 1321 333.5

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