ASTROSAT CZTI

Data Quality Report

Orbit 29128

Creation date: 2024-06-27T20:00:36.366544
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_099T01_9000004184_29128cztM0_level2.evt modeM0/AS1A10_099T01_9000004184_29128cztM0_level2_quad_clean.evt
Size (bytes)655,856,640113,656,320
Size625.5 MB 108.4 MB
Events in quadrant A3,984,303745,895
Events in quadrant B4,510,213746,962
Events in quadrant C3,962,054724,884
Events in quadrant D6,863,988667,925

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171413
B0185553
C0167683
D0257953

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80001291.612500%
B80003434.287500%
C80001832.287500%
D800096012.000000%

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 8035 8002 16 16 0.20% 0.20%
B 8035 8002 129 129 1.61% 1.61%
C 8035 8002 0 0 0.00% 0.00%
D 8035 8002 856 856 10.65% 10.70%

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 15 174 141109 699.95 996 975 200.2
A 13 254 13109 60.61 996 975 200.2
A 3 137 10163 45.89 996 975 200.2
B 10 245 332066 1737.26 980 954 190.6
B 10 246 246505 1288.34 980 954 190.6
B 5 172 45909 235.87 980 954 190.6
C 14 238 157206 681.01 962 969 229.4
C 3 233 22142 92.29 962 969 229.4
C 2 114 19381 80.25 962 969 229.4
D 1 52 2881050 12989.51 926 901 221.7
D 8 195 393688 1771.47 926 901 221.7
D 2 120 43538 192.29 926 901 221.7

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