ASTROSAT CZTI

Data Quality Report

Orbit 38978

Creation date: 2024-06-27T21:58:53.575117
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_057T01_9000005418_38978cztM0_level2.fits modeM0/AS1A12_057T01_9000005418_38978cztM0_level2_quad_clean.evt
Size (bytes)417,836,16088,706,880
Size398.5 MB 84.6 MB
Events in quadrant A3,299,791606,752
Events in quadrant B2,870,867618,703
Events in quadrant C3,960,987572,087
Events in quadrant D4,912,908507,625

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131292
B0120531
C0152071
D0183981

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5434911.674641%
B54341021.877070%
C54342714.987118%
D54344989.164520%

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 7047 5435 90 90 1.28% 1.66%
B 7047 5435 82 82 1.16% 1.51%
C 7047 5435 281 281 3.99% 5.17%
D 7047 5435 508 508 7.21% 9.35%

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 13 248 390509 3116.95 612 598 125.1
A 10 83 371859 2967.86 612 598 125.1
A 15 222 139730 1112.22 612 598 125.1
B 5 172 420327 3554.64 605 589 118.1
B 0 230 47523 397.47 605 589 118.1
B 12 111 14710 119.59 605 589 118.1
C 14 254 1391761 10132.64 588 591 137.3
C 15 214 235978 1714.45 588 591 137.3
C 12 249 26849 191.25 588 591 137.3
D 12 233 544653 3877.84 577 560 140.3
D 12 235 537506 3826.9 577 560 140.3
D 14 52 515272 3668.44 577 560 140.3

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