ASTROSAT CZTI

Data Quality Report

Orbit 31224

Creation date: 2024-06-27T20:25:15.941717
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_002T02_9000004518_31224cztM0_level2.evt modeM0/AS1C06_002T02_9000004518_31224cztM0_level2_quad_clean.evt
Size (bytes)680,929,920113,362,560
Size649.4 MB 108.1 MB
Events in quadrant A3,072,004805,655
Events in quadrant B6,038,713732,934
Events in quadrant C3,505,843764,053
Events in quadrant D7,592,891703,500

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128441
B0219691
C0142981
D0269431

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6120781.274510%
B612078312.794118%
C61202063.366013%
D612091114.885621%

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 7340 6122 1 1 0.01% 0.02%
B 7340 6122 405 405 5.52% 6.62%
C 7340 6122 47 47 0.64% 0.77%
D 7340 6122 847 847 11.54% 13.84%

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 11950 70.82 792 777 157.8
A 5 16 8821 50.99 792 777 157.8
A 3 137 7089 40.01 792 777 157.8
B 6 159 1764311 12975.52 730 713 135.9
B 4 80 1240947 9124.91 730 713 135.9
B 0 190 60850 442.45 730 713 135.9
C 0 10 294231 1678.6 754 760 174.8
C 14 238 128096 728.34 754 760 174.8
C 4 175 64877 366.74 754 760 174.8
D 8 195 2684518 14246.8 729 714 188.4
D 12 218 810824 4300.42 729 714 188.4
D 12 79 798709 4236.11 729 714 188.4

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