ASTROSAT CZTI

Data Quality Report

Orbit 31358

Creation date: 2024-06-27T20:27:14.015688
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_101T01_9000004546_31358cztM0_level2.evt modeM0/AS1A10_101T01_9000004546_31358cztM0_level2_quad_clean.evt
Size (bytes)667,964,16088,096,320
Size637.0 MB 84.0 MB
Events in quadrant A4,045,456540,336
Events in quadrant B6,326,436534,966
Events in quadrant C4,704,574509,251
Events in quadrant D4,600,206515,815

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171252
B0248632
C0190442
D0191572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81582142.623192%
B81593674.498100%
C81596057.415124%
D81592052.512563%

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 8598 8160 0 0 0.00% 0.00%
B 8599 8161 4 4 0.05% 0.05%
C 8599 8161 0 0 0.00% 0.00%
D 8599 8161 12 12 0.14% 0.15%

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 16576 73.98 1048 1025 210.2
A 3 137 11126 48.05 1048 1025 210.2
A 0 226 8930 37.61 1048 1025 210.2
B 6 159 2232489 11138.66 1019 994 200.3
B 0 190 44469 217.01 1019 994 200.3
B 12 111 24645 118.06 1019 994 200.3
C 3 233 500293 2169.1 978 982 230.2
C 14 238 230943 998.99 978 982 230.2
C 14 254 96987 417.06 978 982 230.2
D 8 195 632323 2611.43 1010 983 241.8
D 2 250 78637 321.2 1010 983 241.8
D 2 234 41908 169.28 1010 983 241.8

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