ASTROSAT CZTI

Data Quality Report

Orbit 35320

Creation date: 2022-04-12T15:48:07.446570
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/AS1A11_088T02_9000005060_35320cztM0_level2.evt modeM0/AS1A11_088T02_9000005060_35320cztM0_level2_quad_clean.evt
Size (bytes)82,690,5603,893,760
Size78.9 MB 3.7 MB
Events in quadrant A564,51412,981
Events in quadrant B647,31113,319
Events in quadrant C726,16412,765
Events in quadrant D506,39412,167

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022062
B024741
C026691
D020241

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A841313.686088%
B841384.518430%
C84110512.485137%
D84130.356718%

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 841 841 27 27 3.21% 3.21%
B 841 841 17 17 2.02% 2.02%
C 841 841 103 103 12.25% 12.25%
D 841 841 2 2 0.24% 0.24%

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 9 143 63472 2599.44 112 110 24.4
A 10 83 35221 1440.43 112 110 24.4
A 8 192 16835 686.15 112 110 24.4
B 5 236 153257 6553.78 111 109 23.4
B 5 172 35510 1514.94 111 109 23.4
B 4 232 15902 675.84 111 109 23.4
C 0 10 290307 11712.47 100 100 24.8
C 15 214 37351 1503.41 100 100 24.8
C 15 159 3861 151.79 100 100 24.8
D 2 249 30088 1087.3 107 104 27.6
D 12 128 28962 1046.46 107 104 27.6
D 8 195 18415 664.0 107 104 27.6

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