ASTROSAT CZTI

Data Quality Report

Orbit 36367

Creation date: 2022-06-20T07:44:26.361607
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_097T24_9000005196_36367cztM0_level2.evt modeM0/AS1A11_097T24_9000005196_36367cztM0_level2_quad_clean.evt
Size (bytes)476,303,04068,500,800
Size454.2 MB 65.3 MB
Events in quadrant A2,817,490434,495
Events in quadrant B3,749,630426,860
Events in quadrant C3,006,275419,365
Events in quadrant D4,458,521388,480

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121863
B0149962
C0125662
D0173162

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5796230.396825%
B57961572.708765%
C5796440.759144%
D57963275.641822%

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 7139 5797 15 15 0.21% 0.26%
B 7139 5797 112 112 1.57% 1.93%
C 7139 5797 30 30 0.42% 0.52%
D 7139 5797 373 373 5.22% 6.43%

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 187914 1430.1 651 640 131.0
A 9 143 63529 480.25 651 640 131.0
A 12 189 29091 217.26 651 640 131.0
B 5 172 706652 5715.03 642 624 123.5
B 4 171 366122 2958.57 642 624 123.5
B 5 236 51898 415.04 642 624 123.5
C 15 214 248228 1673.21 630 635 148.0
C 0 207 224007 1509.53 630 635 148.0
C 0 10 74676 500.36 630 635 148.0
D 12 6 1130749 7505.88 617 601 150.6
D 12 235 278315 1844.44 617 601 150.6
D 2 249 193431 1280.68 617 601 150.6

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