ASTROSAT CZTI

Data Quality Report

Orbit 39509

Creation date: 2024-06-27T22:05:29.859248
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/AS1A12_018T01_9000005488_39509cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39509cztM0_level2_quad_clean.evt
Size (bytes)1,244,041,920334,235,520
Size1.2 GB 318.8 MB
Events in quadrant A10,110,0182,269,527
Events in quadrant B10,604,7222,296,694
Events in quadrant C12,799,6372,151,574
Events in quadrant D10,978,3362,017,566

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04100
B04100
C04100
D04100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0429157
B0460906
C0514376
D0477936

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0930
B0930
C0930
D0940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20112540.268496%
B201125902.933572%
C201129454.698687%
D201124712.341885%

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 32226 20117 28 28 0.09% 0.14%
B 32226 20117 443 443 1.37% 2.20%
C 32226 20117 859 859 2.67% 4.27%
D 32226 20117 407 407 1.26% 2.02%

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 1484731 3456.33 2149 2110 429.0
A 9 143 65907 148.72 2149 2110 429.0
A 2 79 65897 148.7 2149 2110 429.0
B 5 172 2213132 5551.68 2124 2063 398.3
B 12 111 50793 122.35 2124 2063 398.3
B 11 111 46682 112.03 2124 2063 398.3
C 9 187 3804872 8064.74 2060 2074 471.5
C 15 214 821830 1738.49 2060 2074 471.5
C 15 208 68625 141.14 2060 2074 471.5
D 2 249 1120753 2245.86 2073 2016 498.1
D 13 249 877715 1757.96 2073 2016 498.1
D 12 227 736087 1473.64 2073 2016 498.1

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