ASTROSAT CZTI

Data Quality Report

Orbit 20223

Creation date: 2024-06-27T18:12:38.769451
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_117T01_9000002998_20223cztM0_level2.evt modeM0/AS1A05_117T01_9000002998_20223cztM0_level2_quad_clean.evt
Size (bytes)547,352,64077,215,680
Size522.0 MB 73.6 MB
Events in quadrant A3,512,839483,986
Events in quadrant B3,854,988482,113
Events in quadrant C3,478,196458,211
Events in quadrant D5,273,378444,106

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143571
B0154141
C0140541
D0199251

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67381251.855150%
B67391772.626502%
C67391372.032943%
D673972310.728595%

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 7728 6739 6 6 0.08% 0.09%
B 7729 6740 32 32 0.41% 0.47%
C 7729 6740 0 0 0.00% 0.00%
D 7729 6740 581 581 7.52% 8.62%

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 14 238 48492 268.79 880 863 177.2
A 4 2 33184 182.4 880 863 177.2
A 13 252 30852 169.24 880 863 177.2
B 7 220 302922 1846.95 863 843 163.6
B 0 197 55312 333.03 863 843 163.6
B 4 171 25319 149.65 863 843 163.6
C 14 238 131450 678.47 831 839 192.5
C 3 233 96210 495.41 831 839 192.5
C 1 16 5884 26.21 831 839 192.5
D 1 52 1158388 5847.27 817 796 198.0
D 12 218 860085 4340.47 817 796 198.0
D 7 238 61930 308.8 817 796 198.0

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