ASTROSAT CZTI

Data Quality Report

Orbit 20190509_T03_056T01_9000002900_level2

Creation date: 2019-05-10T17:06:49.276089
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/AS1T03_056T01_9000002900cztM0_level2_bc.evt modeM0/AS1T03_056T01_9000002900cztM0_level2_quad_clean.evt
Size (bytes)291,991,680125,173,440
Size278.5 MB 119.4 MB
Events in quadrant A1,724,139813,352
Events in quadrant B1,887,423818,634
Events in quadrant C2,030,641778,334
Events in quadrant D2,598,548775,449

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179100
B0185290
C0189560
D0213000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A87231271.455921%
B87231611.845695%
C87232212.533532%
D87234314.940961%

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 9062 8722 0 0 0.00% 0.00%
B 9062 8722 1 1 0.01% 0.01%
C 9062 8722 1 1 0.01% 0.01%
D 9061 8721 33 33 0.36% 0.38%

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 16 10441 101.06 441 432 99.0
A 13 254 10185 98.47 441 432 99.0
A 15 192 5693 53.12 441 432 99.0
B 0 190 64701 730.23 442 429 88.0
B 7 220 22767 253.79 442 429 88.0
B 0 198 21850 243.37 442 429 88.0
C 3 233 381098 3754.45 420 415 101.4
C 10 223 14582 139.72 420 415 101.4
C 8 128 5700 52.12 420 415 101.4
D 12 233 374069 3686.23 426 408 101.4
D 12 218 362453 3571.63 426 408 101.4
D 1 52 66126 648.32 426 408 101.4

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