ASTROSAT CZTI

Data Quality Report

Orbit 04832

Creation date: 2024-06-27T14:47:38.421594
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/AS1G05_253T02_9000000614_04832cztM0_level2.evt modeM0/AS1G05_253T02_9000000614_04832cztM0_level2_quad_clean.evt
Size (bytes)757,134,720141,926,400
Size722.1 MB 135.4 MB
Events in quadrant A5,373,719903,815
Events in quadrant B6,360,524898,559
Events in quadrant C4,827,650906,615
Events in quadrant D5,661,628867,094

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0221

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02182
B021810
C02180
D02184

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023772545
B026296594
C022299511
D024744647

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A104352832.712027%
B104192802.687398%
C104281281.227465%
D104041981.903114%

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 12862 10566 100 100 0.78% 0.95%
B 12862 10564 111 111 0.86% 1.05%
C 12862 10556 5 5 0.04% 0.05%
D 12862 10549 69 69 0.54% 0.65%

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 13 251 386707 1526.11 1240 1216 252.6
A 8 15 119319 467.55 1240 1216 252.6
A 0 50 57755 223.83 1240 1216 252.6
B 10 16 708436 2986.75 1238 1210 236.8
B 14 167 513371 2162.95 1238 1210 236.8
B 15 204 152841 640.37 1238 1210 236.8
C 9 247 98889 352.95 1197 1202 276.8
C 1 16 49267 173.66 1197 1202 276.8
C 13 61 10057 31.99 1197 1202 276.8
D 2 136 422717 1478.26 1197 1164 285.2
D 13 235 248918 868.8 1197 1164 285.2
D 10 15 149399 519.82 1197 1164 285.2

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