ASTROSAT CZTI

Data Quality Report

Orbit 46720

Creation date: 2024-06-27T23:26:48.523979
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/AS1A13_037T01_9000006256_46720cztM0_level2.fits modeM0/AS1A13_037T01_9000006256_46720cztM0_level2_quad_clean.evt
Size (bytes)446,310,72095,895,360
Size425.6 MB 91.5 MB
Events in quadrant A5,625,911637,996
Events in quadrant B3,093,239661,716
Events in quadrant C3,388,327625,416
Events in quadrant D3,962,774572,693

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0203001
B0134521
C0141021
D0157831

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58062344.030313%
B58061833.151912%
C58061602.755770%
D58062754.736480%

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 6936 5807 54 54 0.78% 0.93%
B 6936 5807 48 48 0.69% 0.83%
C 6936 5807 70 70 1.01% 1.21%
D 6936 5806 236 236 3.40% 4.06%

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 10 83 2980638 22168.46 643 627 134.4
A 9 191 68105 501.97 643 627 134.4
A 13 248 32771 239.12 643 627 134.4
B 4 171 237321 1867.73 648 629 126.7
B 5 172 162421 1276.7 648 629 126.7
B 0 198 38579 299.46 648 629 126.7
C 5 250 652062 4365.71 635 640 149.2
C 1 241 121440 809.58 635 640 149.2
C 12 2 102308 681.36 635 640 149.2
D 1 52 680957 4288.33 627 609 158.7
D 14 34 511761 3221.86 627 609 158.7
D 2 249 129393 811.74 627 609 158.7

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