ASTROSAT CZTI

Data Quality Report

Orbit 31520

Creation date: 2024-06-27T20:29:30.217778
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/AS1A10_053T26_9000004594_31520cztM0_level2.evt modeM0/AS1A10_053T26_9000004594_31520cztM0_level2_quad_clean.evt
Size (bytes)460,972,80059,011,200
Size439.6 MB 56.3 MB
Events in quadrant A2,417,355374,570
Events in quadrant B4,137,953364,350
Events in quadrant C2,807,401353,072
Events in quadrant D4,249,029334,078

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105621
B0161371
C0116911
D0161051

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5141360.700253%
B51411292.509239%
C51411392.703754%
D51412765.368605%

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 5851 5141 0 0 0.00% 0.00%
B 5851 5141 20 20 0.34% 0.39%
C 5851 5141 21 21 0.36% 0.41%
D 5851 5141 224 224 3.83% 4.36%

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 13 254 10011 73.91 625 610 127.2
A 3 137 6516 46.43 625 610 127.2
A 0 226 5145 35.65 625 610 127.2
B 6 159 1438992 11925.93 614 597 120.6
B 4 80 149066 1230.98 614 597 120.6
B 0 190 33561 273.31 614 597 120.6
C 3 233 217390 1545.63 591 595 140.3
C 0 10 162859 1156.85 591 595 140.3
C 14 238 94229 667.56 591 595 140.3
D 8 195 1039013 7241.0 590 573 143.4
D 13 249 427929 2979.94 590 573 143.4
D 12 79 422032 2938.82 590 573 143.4

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