ASTROSAT CZTI

Data Quality Report

Orbit 31387

Creation date: 2024-06-27T20:27:38.883796
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/AS1T04_027T01_9000004552_31387cztM0_level2.evt modeM0/AS1T04_027T01_9000004552_31387cztM0_level2_quad_clean.evt
Size (bytes)387,993,60057,294,720
Size370.0 MB 54.6 MB
Events in quadrant A2,336,581362,400
Events in quadrant B3,955,440350,478
Events in quadrant C2,441,363347,736
Events in quadrant D2,696,273342,883

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A098991
B0150751
C0101571
D0110941

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A47081342.846219%
B47083367.136788%
C47081583.355990%
D47081142.421410%

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 4778 4709 0 0 0.00% 0.00%
B 4778 4709 60 60 1.26% 1.27%
C 4778 4709 1 1 0.02% 0.02%
D 4778 4709 18 18 0.38% 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 13 254 8947 68.17 605 591 122.6
A 3 137 6438 47.7 605 591 122.6
A 0 226 5090 36.7 605 591 122.6
B 6 159 1304927 11397.17 588 572 114.4
B 5 172 220434 1921.11 588 572 114.4
B 15 33 31653 271.58 588 572 114.4
C 14 238 93359 683.28 576 578 135.8
C 3 233 56845 414.38 576 578 135.8
C 0 10 25860 186.19 576 578 135.8
D 8 195 371972 2626.01 585 568 141.4
D 2 250 49863 348.54 585 568 141.4
D 13 249 34648 240.96 585 568 141.4

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