ASTROSAT CZTI

Data Quality Report

Orbit 35063

Creation date: 2022-03-24T06:26:30.427175
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_046T08_9000005024_35063cztM0_level2.evt modeM0/AS1A11_046T08_9000005024_35063cztM0_level2_quad_clean.evt
Size (bytes)466,191,360102,571,200
Size444.6 MB 97.8 MB
Events in quadrant A2,619,627681,259
Events in quadrant B2,885,140691,332
Events in quadrant C2,772,356710,901
Events in quadrant D5,467,438637,156

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116433
B0124732
C0116192
D0201562

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5512561.015965%
B55121352.449202%
C5512520.943396%
D55124818.726415%

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 7065 5513 42 42 0.59% 0.76%
B 7065 5513 87 87 1.23% 1.58%
C 7065 5513 40 40 0.57% 0.73%
D 7065 5513 427 427 6.04% 7.75%

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 15 237 106659 867.7 610 598 122.2
A 10 83 79264 643.58 610 598 122.2
A 9 143 51424 415.82 610 598 122.2
B 5 172 256736 2204.74 607 590 116.2
B 0 190 123322 1056.4 607 590 116.2
B 4 232 32475 274.45 607 590 116.2
C 15 214 229713 1641.5 606 610 139.6
C 0 10 161954 1156.02 606 610 139.6
C 14 67 8216 54.5 606 610 139.6
D 8 195 1858734 13103.74 582 566 141.8
D 1 47 272447 1917.3 582 566 141.8
D 10 118 271445 1910.23 582 566 141.8

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