ASTROSAT CZTI

Data Quality Report

Orbit 39335

Creation date: 2024-06-27T22:03:23.602398
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/AS1A12_018T01_9000005470_39335cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39335cztM0_level2_quad_clean.evt
Size (bytes)465,534,72092,638,080
Size444.0 MB 88.3 MB
Events in quadrant A3,029,404644,232
Events in quadrant B2,775,598654,853
Events in quadrant C2,767,283625,975
Events in quadrant D8,215,152479,414

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123773
B0122552
C0118182
D0284312

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5730380.663176%
B57301051.832461%
C573050.087260%
D5730130022.687609%

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 7161 5731 32 32 0.45% 0.56%
B 7161 5731 60 60 0.84% 1.05%
C 7161 5731 0 0 0.00% 0.00%
D 7161 5731 1183 1183 16.52% 20.64%

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 449023 3502.89 629 617 128.0
A 13 248 121583 944.97 629 617 128.0
A 13 6 14914 111.69 629 617 128.0
B 5 172 274125 2289.74 619 604 119.5
B 5 255 35795 294.6 619 604 119.5
B 0 213 15455 124.32 619 604 119.5
C 15 214 260083 1832.54 613 614 141.6
C 9 187 100047 702.26 613 614 141.6
C 12 249 5647 35.55 613 614 141.6
D 12 235 4609658 33066.24 567 549 139.4
D 12 227 540818 3875.95 567 549 139.4
D 5 222 524407 3758.21 567 549 139.4

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