ASTROSAT CZTI

Data Quality Report

Orbit 34353

Creation date: 2022-02-04T06:50:16.408750
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_019T01_9000004906_34353cztM0_level2.evt modeM0/AS1A05_019T01_9000004906_34353cztM0_level2_quad_clean.evt
Size (bytes)667,938,24053,349,120
Size637.0 MB 50.9 MB
Events in quadrant A2,424,174338,250
Events in quadrant B3,871,443332,617
Events in quadrant C2,958,407331,900
Events in quadrant D10,614,257238,961

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107593
B0150122
C0118912
D0351722

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A532250.093950%
B53223446.463735%
C5322581.089816%
D5322342664.374295%

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 7084 5323 0 0 0.00% 0.00%
B 7084 5323 219 219 3.09% 4.11%
C 7084 5323 41 41 0.58% 0.77%
D 7084 5323 3284 3284 46.36% 61.69%

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 30749 242.71 613 601 124.2
A 13 6 14009 107.94 613 601 124.2
A 13 254 9319 70.19 613 601 124.2
B 5 172 937825 8101.57 600 584 115.7
B 5 31 166562 1434.72 600 584 115.7
B 0 219 161923 1394.62 600 584 115.7
C 15 214 223031 1591.74 600 604 139.7
C 3 233 177781 1267.92 600 604 139.7
C 0 10 119138 848.26 600 604 139.7
D 7 223 6621800 61017.09 440 428 108.5
D 8 195 1174079 10815.4 440 428 108.5
D 12 235 593794 5467.97 440 428 108.5

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