ASTROSAT CZTI

Data Quality Report

Orbit 41778

Creation date: 2024-06-27T22:32:44.786486
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_044T19_9000005698_41778cztM0_level2.fits modeM0/AS1A12_044T19_9000005698_41778cztM0_level2_quad_clean.evt
Size (bytes)241,591,68062,665,920
Size230.4 MB 59.8 MB
Events in quadrant A2,113,792439,174
Events in quadrant B2,721,970418,018
Events in quadrant C2,118,732400,090
Events in quadrant D1,713,975392,007

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A083701
B0102691
C082821
D074541

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3510170.484330%
B35102828.034188%
C35101403.988604%
D351070.199430%

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 3510 3510 7 7 0.20% 0.20%
B 3510 3510 262 262 7.46% 7.46%
C 3510 3510 140 140 3.99% 3.99%
D 3510 3510 7 7 0.20% 0.20%

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 360215 4219.93 417 409 85.3
A 2 79 90832 1060.51 417 409 85.3
A 15 223 38818 450.47 417 409 85.3
B 4 141 591220 7756.51 390 381 76.2
B 0 190 223239 2925.67 390 381 76.2
B 5 255 200833 2631.53 390 381 76.2
C 0 10 409931 4489.95 386 389 91.2
C 15 214 140645 1537.67 386 389 91.2
C 14 254 33186 359.56 386 389 91.2
D 2 249 55304 544.63 405 394 100.8
D 13 249 30290 296.52 405 394 100.8
D 10 199 21531 209.65 405 394 100.8

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