ASTROSAT CZTI

Data Quality Report

Orbit 40199

Creation date: 2024-06-27T22:13:30.564789
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_053T01_9000005530_40199cztM0_level2.fits modeM0/AS1A12_053T01_9000005530_40199cztM0_level2_quad_clean.evt
Size (bytes)315,964,80091,526,400
Size301.3 MB 87.3 MB
Events in quadrant A2,820,687627,558
Events in quadrant B2,575,445641,812
Events in quadrant C2,681,758607,986
Events in quadrant D3,234,862548,801

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114303
B0108242
C0107252
D0128772

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4920210.426829%
B4920390.792683%
C4920370.752033%
D49201493.028455%

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 6953 4921 8 8 0.12% 0.16%
B 6953 4921 18 18 0.26% 0.37%
C 6953 4921 22 22 0.32% 0.45%
D 6953 4921 131 131 1.88% 2.66%

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 464202 3895.39 587 576 119.0
A 2 79 66098 550.52 587 576 119.0
A 13 248 13836 111.41 587 576 119.0
B 5 255 135015 1210.78 587 573 111.0
B 0 230 35601 315.46 587 573 111.0
B 4 171 27058 238.52 587 573 111.0
C 15 214 205467 1544.33 573 578 132.7
C 0 10 103051 772.38 573 578 132.7
C 4 254 76383 571.37 573 578 132.7
D 12 227 616490 4488.34 563 548 137.2
D 12 79 100975 731.81 563 548 137.2
D 13 249 99255 719.27 563 548 137.2

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