ASTROSAT CZTI

Data Quality Report

Orbit 38100

Creation date: 2024-06-27T21:48:22.986820
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_047T09_9000005362_38100cztM0_level2.fits modeM0/AS1A11_047T09_9000005362_38100cztM0_level2_quad_clean.evt
Size (bytes)341,726,40092,566,080
Size325.9 MB 88.3 MB
Events in quadrant A2,775,324645,160
Events in quadrant B2,573,712667,851
Events in quadrant C4,463,098574,341
Events in quadrant D2,454,516570,594

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111553
B0105962
C0164092
D0105292

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4915280.569685%
B4915290.590031%
C491551410.457782%
D4915220.447609%

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 7039 4916 16 16 0.23% 0.33%
B 7039 4916 16 16 0.23% 0.33%
C 7038 4915 523 523 7.43% 10.64%
D 7039 4916 13 13 0.18% 0.26%

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 339680 2821.24 596 586 120.2
A 0 247 48432 398.07 596 586 120.2
A 7 3 20689 167.25 596 586 120.2
B 0 229 149146 1308.44 598 585 113.5
B 5 172 30423 262.8 598 585 113.5
B 4 232 18605 158.71 598 585 113.5
C 1 23 1982353 15391.94 555 562 128.8
C 15 214 197399 1528.77 555 562 128.8
C 0 207 59182 455.28 555 562 128.8
D 13 249 43084 298.39 576 560 142.5
D 13 138 42479 294.15 576 560 142.5
D 12 227 36881 254.87 576 560 142.5

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