ASTROSAT CZTI

Data Quality Report

Orbit 47811

Creation date: 2024-07-31T16:47:16.689379
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/AS1A13_081T01_9000006354_47811cztM0_level2.fits modeM0/AS1A13_081T01_9000006354_47811cztM0_level2_quad_clean.evt
Size (bytes)519,013,440108,241,920
Size495.0 MB 103.2 MB
Events in quadrant A6,970,569718,348
Events in quadrant B3,330,312751,191
Events in quadrant C2,955,277716,775
Events in quadrant D5,421,168610,770

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258003
B0146462
C0141392
D0210642

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68913194.629227%
B68921462.118398%
C6892921.334881%
D689271710.403366%

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 7656 6891 6 6 0.08% 0.09%
B 7657 6892 9 9 0.12% 0.13%
C 7657 6892 7 7 0.09% 0.10%
D 7657 6892 471 471 6.15% 6.83%

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 3990457 25790.68 751 734 154.7
A 0 31 56122 358.04 751 734 154.7
A 13 248 22589 141.28 751 734 154.7
B 5 255 157317 1061.11 752 728 147.6
B 0 200 58710 392.91 752 728 147.6
B 0 155 44346 295.57 752 728 147.6
C 14 254 45167 257.72 738 740 172.4
C 12 2 20139 112.54 738 740 172.4
C 1 3 9228 49.24 738 740 172.4
D 12 2 1209063 6827.55 713 688 177.0
D 2 37 848384 4789.65 713 688 177.0
D 2 165 424743 2395.99 713 688 177.0

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