ASTROSAT CZTI

Data Quality Report

Orbit 20233

Creation date: 2024-06-27T18:12:45.006094
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_117T01_9000002998_20233cztM0_level2.evt modeM0/AS1A05_117T01_9000002998_20233cztM0_level2_quad_clean.evt
Size (bytes)239,808,96058,415,040
Size228.7 MB 55.7 MB
Events in quadrant A1,570,809389,240
Events in quadrant B1,713,741393,995
Events in quadrant C1,635,322382,331
Events in quadrant D2,119,642371,695

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A067871
B072261
C069231
D085501

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3262180.551809%
B3263190.582286%
C3263341.041986%
D3263531.624272%

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 4342 3263 0 0 0.00% 0.00%
B 4343 3264 3 3 0.07% 0.09%
C 4343 3264 0 0 0.00% 0.00%
D 4343 3264 26 26 0.60% 0.80%

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 4 2 3870 42.18 406 399 82.3
A 0 226 3578 38.63 406 399 82.3
A 14 238 3385 36.29 406 399 82.3
B 10 245 113023 1438.68 404 394 78.3
B 12 111 9008 110.03 404 394 78.3
B 0 198 8604 104.87 404 394 78.3
C 14 238 62414 650.8 400 404 95.3
C 3 233 7143 70.73 400 404 95.3
C 9 54 4767 45.79 400 404 95.3
D 1 52 335064 3381.84 401 389 99.0
D 2 184 107792 1085.29 401 389 99.0
D 11 176 104834 1055.4 401 389 99.0

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