ASTROSAT CZTI

Data Quality Report

Orbit 20161009_G06_034T01_9000000722_level2

Creation date: 2025-11-06T23:05:40.057509
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/AS1G06_034T01_9000000722cztM0_level2.fits modeM0/AS1G06_034T01_9000000722cztM0_level2_quad_clean.evt
Size (bytes)413,665,920456,975,360
Size394.5 MB 435.8 MB
Events in quadrant A2,487,0862,810,940
Events in quadrant B2,411,3122,814,941
Events in quadrant C2,455,2462,672,853
Events in quadrant D2,018,6262,387,077

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0955400
B0977040
C0939880
D01369980

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09400
B09400
C09400
D09400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A459475541.205737%
B459485471.190476%
C459472720.591986%
D4594928936.296111%

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 50659 45947 0 0 0.00% 0.00%
B 50659 45948 0 0 0.00% 0.00%
C 50659 45948 0 0 0.00% 0.00%
D 50659 45903 0 0 0.00% 0.00%

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 14 188 2470 11.17 645 601 167.3
A 0 29 2364 10.54 645 601 167.3
A 7 110 2239 9.79 645 601 167.3
B 2 9 2079 11.06 635 600 133.7
B 12 226 1675 8.04 635 600 133.7
B 14 254 1642 7.79 635 600 133.7
C 1 81 1819 7.02 648 596 174.3
C 1 80 1814 6.99 648 596 174.3
C 1 65 1706 6.37 648 596 174.3
D 11 82 1567 6.59 576 521 158.7
D 3 14 1535 6.39 576 521 158.7
D 4 160 1467 5.96 576 521 158.7

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