ASTROSAT CZTI

Data Quality Report

Orbit 47824

Creation date: 2024-08-01T13:28:59.373819
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_47824cztM0_level2.fits modeM0/AS1A13_081T01_9000006354_47824cztM0_level2_quad_clean.evt
Size (bytes)671,474,88084,098,880
Size640.4 MB 80.2 MB
Events in quadrant A5,949,458647,155
Events in quadrant B2,941,807674,513
Events in quadrant C2,783,260632,344
Events in quadrant D12,714,684172,949

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220753
B0130061
C0129851
D0418501

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60072053.412685%
B60071041.731313%
C60061161.931402%
D6008445474.134487%

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 7117 6007 9 9 0.13% 0.15%
B 7117 6007 11 11 0.15% 0.18%
C 7117 6008 61 61 0.86% 1.02%
D 7118 6008 4267 4267 59.95% 71.02%

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 3370974 25127.33 653 639 134.1
A 13 248 34666 253.69 653 639 134.1
A 0 31 17978 129.27 653 639 134.1
B 0 200 275670 2173.29 652 630 126.6
B 12 3 32770 253.96 652 630 126.6
B 12 111 15932 120.91 652 630 126.6
C 12 2 272266 1845.46 633 637 147.2
C 14 254 29122 193.53 633 637 147.2
C 12 250 10543 67.3 633 637 147.2
D 12 33 10586319 112519.81 372 359 94.1
D 12 2 348222 3697.49 372 359 94.1
D 12 32 153733 1630.24 372 359 94.1

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