ASTROSAT CZTI

Data Quality Report

Orbit 21182

Creation date: 2024-06-27T18:24:33.133281
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_062T01_9000003132_21182cztM0_level2.evt modeM0/AS1A05_062T01_9000003132_21182cztM0_level2_quad_clean.evt
Size (bytes)415,097,28055,791,360
Size395.9 MB 53.2 MB
Events in quadrant A2,318,737343,635
Events in quadrant B2,431,096348,412
Events in quadrant C2,351,611338,697
Events in quadrant D5,142,195320,165

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101751
B0103371
C0101301
D0186261

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A48241613.337479%
B48251913.958549%
C48251944.020725%
D482565713.616580%

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 4874 4825 0 0 0.00% 0.00%
B 4875 4826 8 8 0.16% 0.17%
C 4875 4825 0 0 0.00% 0.00%
D 4875 4825 478 478 9.81% 9.91%

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 13 252 29456 239.65 583 570 120.5
A 5 16 25589 207.57 583 570 120.5
A 10 229 11122 87.54 583 570 120.5
B 3 64 57806 501.3 580 565 114.2
B 0 230 35598 306.81 580 565 114.2
B 0 190 16403 138.7 580 565 114.2
C 14 238 85395 639.31 558 562 132.7
C 3 233 82757 619.43 558 562 132.7
C 0 236 4365 28.66 558 562 132.7
D 7 238 1989594 14648.35 551 534 135.8
D 1 239 456304 3356.5 551 534 135.8
D 1 52 368164 2707.4 551 534 135.8

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