ASTROSAT CZTI

Data Quality Report

Orbit 20334

Creation date: 2024-06-27T18:14:00.010699
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_174T01_9000003008_20334cztM0_level2.evt modeM0/AS1A05_174T01_9000003008_20334cztM0_level2_quad_clean.evt
Size (bytes)789,624,000179,671,680
Size753.0 MB 171.3 MB
Events in quadrant A5,873,4681,165,558
Events in quadrant B5,969,7911,192,910
Events in quadrant C5,766,6991,150,507
Events in quadrant D5,514,5591,127,171

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250983
B0252643
C0244263
D0241003

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02400
B02400
C02400
D02400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A116481311.124657%
B116481521.304945%
C116481261.081731%
D11649520.446390%

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 14848 11651 29 29 0.20% 0.25%
B 14848 11651 23 23 0.15% 0.20%
C 14848 11651 0 0 0.00% 0.00%
D 14849 11652 5 5 0.03% 0.04%

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 5 16 281729 964.69 1450 1421 290.6
A 13 254 14223 44.06 1450 1421 290.6
A 0 226 12551 38.3 1450 1421 290.6
B 7 220 156250 564.25 1451 1412 274.4
B 12 111 32837 114.52 1451 1412 274.4
B 11 111 29177 101.18 1451 1412 274.4
C 14 238 219323 662.55 1414 1425 328.9
C 3 233 29203 84.46 1414 1425 328.9
C 13 61 9815 25.51 1414 1425 328.9
D 2 234 47020 131.98 1431 1391 345.7
D 9 1 44281 124.05 1431 1391 345.7
D 1 52 27720 76.15 1431 1391 345.7

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