ASTROSAT CZTI

Data Quality Report

Orbit 27832

Creation date: 2024-06-27T19:44:56.776996
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/AS1A10_048T08_9000004020_27832cztM0_level2.evt modeM0/AS1A10_048T08_9000004020_27832cztM0_level2_quad_clean.evt
Size (bytes)481,654,080103,867,200
Size459.3 MB 99.1 MB
Events in quadrant A3,270,130693,058
Events in quadrant B3,396,595699,730
Events in quadrant C3,297,401656,888
Events in quadrant D4,184,589645,723

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139420
B0143620
C0139860
D0169210

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6454500.774713%
B6453590.914303%
C64531001.549667%
D6454861.332507%

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 7534 6454 0 0 0.00% 0.00%
B 7533 6453 0 0 0.00% 0.00%
C 7533 6453 0 0 0.00% 0.00%
D 7534 6454 50 50 0.66% 0.77%

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 13 254 11939 65.45 846 831 169.7
A 3 137 7934 41.85 846 831 169.7
A 0 226 7356 38.44 846 831 169.7
B 15 32 64024 400.0 831 814 158.0
B 0 190 36550 226.14 831 814 158.0
B 12 111 19064 115.49 831 814 158.0
C 14 238 127758 688.06 791 798 184.5
C 3 233 75309 403.81 791 798 184.5
C 4 175 11399 57.45 791 798 184.5
D 1 52 996186 5213.33 806 786 190.9
D 2 250 79275 411.08 806 786 190.9
D 2 234 27272 138.72 806 786 190.9

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