ASTROSAT CZTI

Data Quality Report

Orbit 20200821_A07_146T01_9000003828_level2

Creation date: 2021-01-09T04:19:09.521761
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/AS1A07_146T01_9000003828cztM0_level2_bc.evt modeM0/AS1A07_146T01_9000003828cztM0_level2_quad_clean.evt
Size (bytes)894,208,320278,265,600
Size852.8 MB 265.4 MB
Events in quadrant A5,068,0191,727,464
Events in quadrant B5,204,9411,761,495
Events in quadrant C5,383,2741,663,539
Events in quadrant D9,776,6291,616,331

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0499380
B0503330
C0513510
D0654040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04920
B04920
C04920
D04920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A241092350.974740%
B241092651.099175%
C241093161.310714%
D2410913345.533203%

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 28299 24106 0 0 0.00% 0.00%
B 28299 24107 0 0 0.00% 0.00%
C 28299 24105 0 0 0.00% 0.00%
D 28299 24106 519 519 1.83% 2.15%

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 34915 118.77 1311 1286 283.1
A 0 226 8172 24.32 1311 1286 283.1
A 12 194 8046 23.88 1311 1286 283.1
B 0 190 49474 195.48 1315 1283 246.5
B 0 229 26804 103.52 1315 1283 246.5
B 15 33 25539 98.39 1315 1283 246.5
C 3 233 365301 1242.44 1252 1246 293.0
C 4 254 88140 296.55 1252 1246 293.0
C 14 176 72693 243.83 1252 1246 293.0
D 1 52 2537119 8709.69 1255 1219 291.2
D 7 80 1927676 6616.52 1255 1219 291.2
D 12 233 255078 871.89 1255 1219 291.2

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