ASTROSAT CZTI

Data Quality Report

Orbit 31083

Creation date: 2024-06-27T20:23:10.354870
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/AS1A10_109T01_9000004492_31083cztM0_level2.evt modeM0/AS1A10_109T01_9000004492_31083cztM0_level2_quad_clean.evt
Size (bytes)615,093,120110,943,360
Size586.6 MB 105.8 MB
Events in quadrant A3,521,949730,419
Events in quadrant B5,722,971723,582
Events in quadrant C3,784,661709,554
Events in quadrant D5,095,626679,247

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153111
B0224991
C0160321
D0199832

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74201121.509434%
B74212403.234065%
C74211842.479450%
D74204435.970350%

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 7535 7422 0 0 0.00% 0.00%
B 7536 7423 1 1 0.01% 0.01%
C 7536 7423 4 4 0.05% 0.05%
D 7535 7422 292 292 3.88% 3.93%

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 11810 59.55 911 893 183.3
A 3 137 9604 47.51 911 893 183.3
A 0 226 7574 36.44 911 893 183.3
B 6 159 2078302 11973.62 898 873 173.5
B 0 183 73722 419.87 898 873 173.5
B 12 111 21980 121.65 898 873 173.5
C 0 10 156460 753.44 877 884 206.5
C 14 238 140550 676.39 877 884 206.5
C 10 22 49229 234.13 877 884 206.5
D 13 174 1353907 6596.96 866 846 205.1
D 8 195 381430 1855.57 866 846 205.1
D 6 219 66479 320.0 866 846 205.1

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