ASTROSAT CZTI

Data Quality Report

Orbit 18067

Creation date: 2024-06-27T17:44:37.079476
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/AS1A06_003T04_9000002682_18067cztM0_level2.evt modeM0/AS1A06_003T04_9000002682_18067cztM0_level2_quad_clean.evt
Size (bytes)485,824,32097,450,560
Size463.3 MB 92.9 MB
Events in quadrant A4,205,305619,019
Events in quadrant B3,358,162635,227
Events in quadrant C3,331,992603,845
Events in quadrant D3,343,350606,555

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170153
B0144172
C0143682
D0146792

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69823725.327986%
B6982270.386709%
C6982610.873675%
D6982190.272128%

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 7677 6983 25 25 0.33% 0.36%
B 7677 6983 0 0 0.00% 0.00%
C 7677 6983 0 0 0.00% 0.00%
D 7677 6983 10 10 0.13% 0.14%

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 14 111 796731 4705.96 834 814 169.1
A 15 174 190051 1118.89 834 814 169.1
A 4 2 13142 72.89 834 814 169.1
B 0 197 26857 160.22 843 821 162.5
B 12 111 18686 109.94 843 821 162.5
B 11 111 16220 94.76 843 821 162.5
C 14 238 125457 661.98 807 813 188.3
C 3 233 45177 235.62 807 813 188.3
C 9 160 6513 30.27 807 813 188.3
D 11 176 86002 425.26 827 805 200.3
D 10 70 34646 168.92 827 805 200.3
D 2 234 28532 138.4 827 805 200.3

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