ASTROSAT CZTI

Data Quality Report

Orbit 38718

Creation date: 2024-06-27T21:55:32.282042
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_054T01_9000005392_38718cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38718cztM0_level2_quad_clean.evt
Size (bytes)603,380,16079,398,720
Size575.4 MB 75.7 MB
Events in quadrant A2,976,296643,800
Events in quadrant B2,558,907658,041
Events in quadrant C3,085,561622,833
Events in quadrant D13,279,08288,415

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124023
B0113682
C0127272
D0432512

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5587350.626454%
B5587100.178987%
C5587691.235010%
D5587496688.884911%

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 8871 5589 15 15 0.17% 0.27%
B 8871 5589 3 3 0.03% 0.05%
C 8871 5589 63 63 0.71% 1.13%
D 8871 5589 4370 4370 49.26% 78.19%

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 395071 3050.41 633 620 129.3
A 9 143 78830 604.82 633 620 129.3
A 0 8 34099 258.9 633 620 129.3
B 4 171 31666 251.23 631 612 123.6
B 12 111 15485 120.32 631 612 123.6
B 0 213 14380 111.38 631 612 123.6
C 14 254 304899 2102.14 617 620 144.7
C 15 214 231250 1593.33 617 620 144.7
C 15 208 111013 762.66 617 620 144.7
D 12 235 7511446 75648.36 401 389 99.3
D 2 16 3849911 38770.84 401 389 99.3
D 10 118 138754 1393.56 401 389 99.3

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