ASTROSAT CZTI

Data Quality Report

Orbit 21016

Creation date: 2024-06-27T18:22:27.679978
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/AS1A05_101T08_9000003102_21016cztM0_level2.evt modeM0/AS1A05_101T08_9000003102_21016cztM0_level2_quad_clean.evt
Size (bytes)441,411,84095,365,440
Size421.0 MB 90.9 MB
Events in quadrant A3,016,014614,462
Events in quadrant B3,248,594638,711
Events in quadrant C3,112,335620,986
Events in quadrant D3,578,000589,296

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126862
B0133652
C0128282
D0146052

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6088120.197109%
B6088350.574901%
C6088260.427070%
D60881582.595269%

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 7438 6089 0 0 0.00% 0.00%
B 7438 6089 6 6 0.08% 0.10%
C 7438 6089 0 0 0.00% 0.00%
D 7438 6089 127 127 1.71% 2.09%

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 13 170 13508 82.24 779 765 155.0
A 0 226 6765 38.72 779 765 155.0
A 3 137 6144 34.71 779 765 155.0
B 0 230 56205 376.52 792 776 147.2
B 7 220 38809 258.35 792 776 147.2
B 3 64 19536 127.44 792 776 147.2
C 14 238 121546 683.47 765 774 176.7
C 10 91 5590 27.25 765 774 176.7
C 13 61 5439 26.4 765 774 176.7
D 6 143 351380 1942.45 754 737 180.5
D 1 52 168036 926.78 754 737 180.5
D 1 20 115620 636.41 754 737 180.5

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