ASTROSAT CZTI

Data Quality Report

Orbit 34666

Creation date: 2022-02-25T09:49:21.006416
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/AS1A11_065T06_9000004958_34666cztM0_level2.evt modeM0/AS1A11_065T06_9000004958_34666cztM0_level2_quad_clean.evt
Size (bytes)473,492,16051,292,800
Size451.6 MB 48.9 MB
Events in quadrant A2,548,009310,951
Events in quadrant B3,940,193306,423
Events in quadrant C2,876,246305,329
Events in quadrant D4,625,754268,628

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106943
B0149192
C0114432
D0172362

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5150180.349515%
B51504578.873786%
C5150771.495146%
D51504518.757282%

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 7003 5151 7 7 0.10% 0.14%
B 7003 5151 307 307 4.38% 5.96%
C 7003 5151 47 47 0.67% 0.91%
D 7003 5151 373 373 5.33% 7.24%

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 45667 354.81 633 621 127.0
A 9 143 26769 205.96 633 621 127.0
A 15 174 16139 122.23 633 621 127.0
B 5 172 1294519 11022.52 613 598 117.4
B 5 255 115439 978.3 613 598 117.4
B 15 201 45081 378.94 613 598 117.4
C 15 214 223047 1565.94 610 615 142.0
C 0 10 195961 1375.25 610 615 142.0
C 14 67 55025 383.05 610 615 142.0
D 8 195 1397794 9525.49 595 577 146.7
D 12 233 499071 3398.47 595 577 146.7
D 12 235 177044 1203.06 595 577 146.7

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