ASTROSAT CZTI

Data Quality Report

Orbit 35937

Creation date: 2022-06-09T03:21:04.384246
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/AS1A11_080T01_9000005146_35937cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35937cztM0_level2_quad_clean.evt
Size (bytes)445,147,20082,321,920
Size424.5 MB 78.5 MB
Events in quadrant A2,707,262542,605
Events in quadrant B4,129,233514,363
Events in quadrant C2,919,215535,326
Events in quadrant D3,343,983507,611

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116003
B0159252
C0120492
D0137632

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A561870.124600%
B56184618.205767%
C5618380.676397%
D5618621.103596%

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 7229 5619 1 1 0.01% 0.02%
B 7229 5619 341 341 4.72% 6.07%
C 7229 5619 25 25 0.35% 0.44%
D 7229 5619 49 49 0.68% 0.87%

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 168620 1272.02 647 635 132.1
A 15 169 17474 127.51 647 635 132.1
A 13 6 9416 66.49 647 635 132.1
B 5 172 1495509 12603.04 620 605 118.6
B 4 81 75173 628.66 620 605 118.6
B 4 171 45166 375.68 620 605 118.6
C 15 214 234493 1591.84 628 633 146.9
C 0 207 125400 849.26 628 633 146.9
C 0 10 108585 734.81 628 633 146.9
D 8 195 308669 1996.63 622 604 154.3
D 13 249 302051 1953.74 622 604 154.3
D 10 118 123718 797.93 622 604 154.3

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