ASTROSAT CZTI

Data Quality Report

Orbit 25464

Creation date: 2024-06-27T19:17:57.528940
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/AS1A09_085T02_9000003716_25464cztM0_level2.evt modeM0/AS1A09_085T02_9000003716_25464cztM0_level2_quad_clean.evt
Size (bytes)480,176,64086,682,240
Size457.9 MB 82.7 MB
Events in quadrant A3,399,995564,016
Events in quadrant B3,043,203563,550
Events in quadrant C3,092,059541,282
Events in quadrant D4,581,187518,372

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140360
B0129730
C0131870
D0175900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6267781.244615%
B6267831.324398%
C62671111.771182%
D62673856.143290%

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 7017 6270 3 3 0.04% 0.05%
B 7017 6270 0 0 0.00% 0.00%
C 7017 6270 0 0 0.00% 0.00%
D 7017 6270 345 345 4.92% 5.50%

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 6 16 346118 2180.59 791 772 158.4
A 13 254 10314 60.25 791 772 158.4
A 3 137 7168 40.38 791 772 158.4
B 12 111 17960 115.87 775 756 148.5
B 11 111 16263 104.44 775 756 148.5
B 14 111 14885 95.16 775 756 148.5
C 14 238 119548 681.36 747 752 174.4
C 9 54 49849 281.6 747 752 174.4
C 2 16 8018 41.67 747 752 174.4
D 7 238 1259217 6908.58 751 730 182.2
D 8 195 294146 1610.73 751 730 182.2
D 12 233 67759 367.96 751 730 182.2

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