ASTROSAT CZTI

Data Quality Report

Orbit 47809

Creation date: 2024-07-31T16:34:20.658700
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/AS1A13_081T01_9000006354_47809cztM0_level2.fits modeM0/AS1A13_081T01_9000006354_47809cztM0_level2_quad_clean.evt
Size (bytes)187,260,48043,816,320
Size178.6 MB 41.8 MB
Events in quadrant A2,768,330280,813
Events in quadrant B1,372,234299,826
Events in quadrant C1,203,951292,692
Events in quadrant D1,384,977268,823

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102841
B056461
C054041
D059501

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A25741987.692308%
B25741214.700855%
C2574572.214452%
D2574762.952603%

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 3709 2574 14 14 0.38% 0.54%
B 3709 2574 4 4 0.11% 0.16%
C 3709 2575 1 1 0.03% 0.04%
D 3709 2575 20 20 0.54% 0.78%

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 1601088 25212.1 300 293 63.5
A 0 31 7796 118.17 300 293 63.5
A 3 137 3422 49.28 300 293 63.5
B 0 155 70396 1147.17 306 296 61.1
B 5 255 43126 700.9 306 296 61.1
B 10 7 36661 595.11 306 296 61.1
C 12 2 12945 176.47 303 303 71.6
C 14 254 8112 109.01 303 303 71.6
C 3 110 2114 25.28 303 303 71.6
D 2 165 104221 1382.42 300 291 75.2
D 12 2 68200 903.29 300 291 75.2
D 2 37 47350 625.95 300 291 75.2

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