ASTROSAT CZTI

Data Quality Report

Orbit 27331

Creation date: 2024-06-27T19:38:58.102820
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/AS1T03_255T01_9000003922_27331cztM0_level2.evt modeM0/AS1T03_255T01_9000003922_27331cztM0_level2_quad_clean.evt
Size (bytes)543,199,68092,191,680
Size518.0 MB 87.9 MB
Events in quadrant A3,380,117611,578
Events in quadrant B4,817,586584,982
Events in quadrant C3,272,492575,356
Events in quadrant D4,535,729562,048

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141520
B0185550
C0138080
D0176300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6563701.066585%
B65624166.339531%
C6563981.493220%
D65631462.224592%

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 7508 6564 7 7 0.09% 0.11%
B 7508 6563 260 260 3.46% 3.96%
C 7508 6564 3 3 0.04% 0.05%
D 7508 6564 183 183 2.44% 2.79%

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 15 174 58392 338.64 843 826 170.0
A 12 189 30966 177.3 843 826 170.0
A 13 248 26223 149.4 843 826 170.0
B 3 64 1106130 7091.07 812 793 155.9
B 5 172 309342 1979.44 812 793 155.9
B 7 205 144794 923.81 812 793 155.9
C 14 238 126786 680.45 790 796 185.2
C 2 16 38629 204.33 790 796 185.2
C 15 208 11297 56.71 790 796 185.2
D 12 227 539812 2572.34 796 782 209.5
D 2 250 281926 1341.66 796 782 209.5
D 12 233 230763 1097.51 796 782 209.5

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