ASTROSAT CZTI

Data Quality Report

Orbit 31587

Creation date: 2024-06-27T20:30:21.646345
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/AS1C06_006T06_9000004608_31587cztM0_level2.evt modeM0/AS1C06_006T06_9000004608_31587cztM0_level2_quad_clean.evt
Size (bytes)1,185,088,320139,953,600
Size1.1 GB 133.5 MB
Events in quadrant A5,410,236945,419
Events in quadrant B12,891,120821,170
Events in quadrant C5,643,582907,647
Events in quadrant D11,227,609824,624

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0312
B0335
C0324
D0345

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254142972
B0513205950
C0261673007
D0463395306

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024723
B024731
C024927
D025032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A107451541.433225%
B10571239122.618485%
C107302472.301957%
D10600111710.537736%

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 16314 10939 0 0 0.00% 0.00%
B 16311 10750 1496 1496 9.17% 13.92%
C 16319 10920 4 4 0.02% 0.04%
D 16308 10804 796 796 4.88% 7.37%

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 18810 62.52 1403 1375 278.8
A 3 137 13585 43.79 1403 1375 278.8
A 0 226 11839 37.52 1403 1375 278.8
B 12 1 4057304 17368.86 1249 1218 233.5
B 6 159 2731674 11692.28 1249 1218 233.5
B 4 80 584367 2497.14 1249 1218 233.5
C 14 238 216078 696.52 1334 1347 308.3
C 4 175 80266 255.99 1334 1347 308.3
C 3 233 59740 189.41 1334 1347 308.3
D 8 195 3465412 11607.3 1269 1238 298.4
D 12 218 1113016 3725.2 1269 1238 298.4
D 7 223 580799 1941.92 1269 1238 298.4

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