ASTROSAT CZTI

Data Quality Report

Orbit 26223

Creation date: 2024-06-27T19:26:17.010812
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/AS1C05_019T04_9000003788_26223cztM0_level2.evt modeM0/AS1C05_019T04_9000003788_26223cztM0_level2_quad_clean.evt
Size (bytes)548,674,560123,730,560
Size523.3 MB 118.0 MB
Events in quadrant A3,302,841843,241
Events in quadrant B3,267,416857,546
Events in quadrant C3,418,328829,057
Events in quadrant D6,181,184757,951

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143040
B0140470
C0144510
D0229260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6594871.319381%
B6594640.970579%
C6594771.167728%
D659487513.269639%

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 7539 6595 48 48 0.64% 0.73%
B 7539 6595 26 26 0.34% 0.39%
C 7539 6595 6 6 0.08% 0.09%
D 7539 6595 777 777 10.31% 11.78%

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 0 13 294529 1880.25 779 763 156.2
A 13 254 11124 66.32 779 763 156.2
A 3 137 7000 39.92 779 763 156.2
B 5 172 123839 824.31 782 762 149.3
B 0 190 35213 230.73 782 762 149.3
B 15 36 26640 173.32 782 762 149.3
C 3 233 288545 1613.91 761 765 178.3
C 14 238 120477 671.36 761 765 178.3
C 0 239 17080 91.5 761 765 178.3
D 1 52 3309093 18709.81 717 700 176.8
D 7 38 61623 344.54 717 700 176.8
D 2 234 31118 172.02 717 700 176.8

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