ASTROSAT CZTI

Data Quality Report

Orbit 18682

Creation date: 2024-06-27T17:53:37.663189
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/AS1A05_226T06_9000002792_18682cztM0_level2.evt modeM0/AS1A05_226T06_9000002792_18682cztM0_level2_quad_clean.evt
Size (bytes)530,184,96072,858,240
Size505.6 MB 69.5 MB
Events in quadrant A3,422,005447,448
Events in quadrant B3,485,914451,548
Events in quadrant C3,610,092427,727
Events in quadrant D5,070,040397,803

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144462
B0145432
C0150072
D0197572

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6907841.216158%
B6908901.302837%
C69081422.055588%
D69084536.557614%

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 8862 6908 1 1 0.01% 0.01%
B 8863 6910 0 0 0.00% 0.00%
C 8863 6910 18 18 0.20% 0.26%
D 8863 6910 275 275 3.10% 3.98%

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 9 143 16240 86.54 882 866 177.7
A 13 254 11085 57.52 882 866 177.7
A 0 226 7549 37.62 882 866 177.7
B 4 216 33046 195.01 874 854 165.1
B 12 111 20627 119.78 874 854 165.1
B 11 111 18146 104.75 874 854 165.1
C 9 54 196987 1006.25 834 839 194.9
C 14 238 128898 656.95 834 839 194.9
C 3 233 33849 169.34 834 839 194.9
D 1 52 1291131 6409.36 831 807 201.3
D 7 238 545643 2706.34 831 807 201.3
D 7 96 85809 422.23 831 807 201.3

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