ASTROSAT CZTI

Data Quality Report

Orbit 20200627_A09_016T03_9000003740_level2

Creation date: 2021-01-10T07:10:49.023963
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A09_016T03_9000003740cztM0_level2_bc.evt modeM0/AS1A09_016T03_9000003740cztM0_level2_quad_clean.evt
Size (bytes)1,130,302,080400,455,360
Size1.1 GB 381.9 MB
Events in quadrant A8,038,9412,550,746
Events in quadrant B6,939,2292,601,529
Events in quadrant C6,515,7442,435,248
Events in quadrant D10,583,6972,374,901

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0689240
B0661490
C0657850
D0764340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06420
B06420
C06420
D06420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A315288642.740421%
B315287552.394697%
C315287862.493022%
D315286392.026770%

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 34627 31524 15 15 0.04% 0.05%
B 34627 31525 1 1 0.00% 0.00%
C 34628 31526 0 0 0.00% 0.00%
D 34627 31527 44 44 0.13% 0.14%

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 12 96 686537 1839.64 1729 1699 372.3
A 8 192 627905 1682.14 1729 1699 372.3
A 13 254 39412 101.31 1729 1699 372.3
B 0 245 115200 346.15 1755 1715 327.8
B 3 112 52733 155.61 1755 1715 327.8
B 0 190 44698 131.11 1755 1715 327.8
C 3 233 53192 133.46 1654 1649 386.2
C 2 16 43980 109.61 1654 1649 386.2
C 5 112 40932 101.71 1654 1649 386.2
D 8 195 2216992 5719.14 1677 1618 387.4
D 1 52 1653182 4263.63 1677 1618 387.4
D 2 244 132001 336.59 1677 1618 387.4

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