ASTROSAT CZTI

Data Quality Report

Orbit 45517

Creation date: 2024-06-27T23:13:11.835473
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_031T02_9000006100_45517cztM0_level2.fits modeM0/AS1A13_031T02_9000006100_45517cztM0_level2_quad_clean.evt
Size (bytes)457,692,480115,983,360
Size436.5 MB 110.6 MB
Events in quadrant A5,907,657770,144
Events in quadrant B3,345,717817,822
Events in quadrant C3,334,595776,002
Events in quadrant D3,854,882699,580

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221563
B0141172
C0142092
D0157382

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64342714.211999%
B64341141.771837%
C64341091.694125%
D64341702.642213%

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 7624 6435 16 16 0.21% 0.25%
B 7624 6435 19 19 0.25% 0.30%
C 7624 6435 35 35 0.46% 0.54%
D 7624 6435 63 63 0.83% 0.98%

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 2766673 17144.88 782 767 161.3
A 2 79 54822 335.07 782 767 161.3
A 7 3 34913 211.66 782 767 161.3
B 5 172 114978 742.35 790 768 153.8
B 15 201 51119 327.28 790 768 153.8
B 0 186 18960 118.25 790 768 153.8
C 14 254 258290 1415.18 782 788 182.0
C 3 233 16796 87.98 782 788 182.0
C 2 14 12661 65.25 782 788 182.0
D 13 249 218119 1126.08 775 751 193.0
D 1 52 213110 1100.13 775 751 193.0
D 2 249 207233 1069.68 775 751 193.0

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