ASTROSAT CZTI

Data Quality Report

Orbit 47327

Creation date: 2024-06-29T02:45:59.732848
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/AS1A13_037T01_9000006318_47327cztM0_level2.fits modeM0/AS1A13_037T01_9000006318_47327cztM0_level2_quad_clean.evt
Size (bytes)537,929,280102,041,280
Size513.0 MB 97.3 MB
Events in quadrant A6,864,293684,946
Events in quadrant B3,004,301727,718
Events in quadrant C5,662,617601,621
Events in quadrant D3,894,440637,033

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0252351
B0132801
C0210551
D0158091

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62783155.017522%
B6278681.083147%
C627890214.367633%
D62781422.261867%

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 7273 6279 88 88 1.21% 1.40%
B 7273 6279 1 1 0.01% 0.02%
C 7273 6279 755 755 10.38% 12.02%
D 7273 6279 75 75 1.03% 1.19%

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 3381457 22758.21 710 696 148.6
A 15 235 428217 2877.94 710 696 148.6
A 9 191 290776 1952.73 710 696 148.6
B 0 198 49087 332.97 719 695 145.3
B 0 183 43288 293.07 719 695 145.3
B 12 111 17978 118.92 719 695 145.3
C 12 2 3031785 19460.28 660 662 155.8
C 3 233 53461 338.98 660 662 155.8
C 13 61 4290 23.29 660 662 155.8
D 14 34 458400 2573.71 708 685 177.8
D 10 204 416679 2339.12 708 685 177.8
D 2 249 58790 326.72 708 685 177.8

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