ASTROSAT CZTI

Data Quality Report

Orbit 20201031_A09_038T25_9000003946_level2

Creation date: 2021-01-07T16:28:56.914508
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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_038T25_9000003946cztM0_level2_bc.evt modeM0/AS1A09_038T25_9000003946cztM0_level2_quad_clean.evt
Size (bytes)178,741,44073,589,760
Size170.5 MB 70.2 MB
Events in quadrant A820,124499,486
Events in quadrant B913,950507,526
Events in quadrant C785,333481,367
Events in quadrant D2,597,576441,902

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A086160
B088730
C086090
D0156250

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4233280.661469%
B4233420.992204%
C4233360.850461%
D423360314.245216%

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 4973 4232 0 0 0.00% 0.00%
B 4973 4232 1 1 0.02% 0.02%
C 4973 4232 0 0 0.00% 0.00%
D 4973 4232 65 65 1.31% 1.54%

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 7168 142.86 210 205 48.7
A 6 16 3069 58.76 210 205 48.7
A 7 16 1386 24.23 210 205 48.7
B 10 245 37225 844.86 212 207 43.8
B 0 230 28195 638.77 212 207 43.8
B 15 32 11027 246.94 212 207 43.8
C 7 221 9150 177.59 201 199 50.4
C 2 16 3195 59.44 201 199 50.4
C 13 61 1127 18.41 201 199 50.4
D 1 52 1740383 36322.79 193 186 47.9
D 7 80 48892 1016.63 193 186 47.9
D 2 250 31418 651.9 193 186 47.9

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