ASTROSAT CZTI

Data Quality Report

Orbit 25365

Creation date: 2024-06-27T19:16:52.120746
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/AS1A09_104T01_9000003710_25365cztM0_level2.evt modeM0/AS1A09_104T01_9000003710_25365cztM0_level2_quad_clean.evt
Size (bytes)553,628,160105,134,400
Size528.0 MB 100.3 MB
Events in quadrant A4,049,509676,303
Events in quadrant B3,835,517678,594
Events in quadrant C3,853,359646,334
Events in quadrant D4,501,831643,424

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169190
B0163670
C0163800
D0187480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77461481.910664%
B77461622.091402%
C77472383.072157%
D77471471.897509%

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 8236 7748 27 27 0.33% 0.35%
B 8236 7750 1 1 0.01% 0.01%
C 8237 7749 0 0 0.00% 0.00%
D 8237 7750 15 15 0.18% 0.19%

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 3 1 145662 733.67 974 953 197.2
A 6 16 91366 458.39 974 953 197.2
A 15 173 55796 278.05 974 953 197.2
B 12 111 23271 121.0 966 941 184.5
B 11 111 20634 106.71 966 941 184.5
B 14 111 18255 93.82 966 941 184.5
C 14 238 146316 658.18 933 935 220.9
C 9 54 53556 238.23 933 935 220.9
C 3 233 15565 66.23 933 935 220.9
D 8 195 672701 2944.79 945 916 228.1
D 1 52 140663 612.58 945 916 228.1
D 12 233 49534 213.12 945 916 228.1

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