ASTROSAT CZTI

Data Quality Report

Orbit 46458

Creation date: 2024-06-27T23:23:21.409982
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_037T01_9000006212_46458cztM0_level2.fits modeM0/AS1A13_037T01_9000006212_46458cztM0_level2_quad_clean.evt
Size (bytes)492,059,520108,745,920
Size469.3 MB 103.7 MB
Events in quadrant A6,271,515727,660
Events in quadrant B3,442,156764,510
Events in quadrant C3,277,200716,888
Events in quadrant D4,716,321627,843

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230602
B0146222
C0143662
D0187282

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65382303.517895%
B6538731.116549%
C65381332.034261%
D65384546.944020%

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 7683 6539 47 47 0.61% 0.72%
B 7683 6539 17 17 0.22% 0.26%
C 7683 6538 100 100 1.30% 1.53%
D 7683 6539 375 375 4.88% 5.73%

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 3334498 22034.37 734 719 151.3
A 2 79 38365 248.82 734 719 151.3
A 13 254 12495 77.83 734 719 151.3
B 0 190 114352 777.01 744 723 146.2
B 10 128 69338 469.2 744 723 146.2
B 5 172 66344 448.72 744 723 146.2
C 9 54 321317 1904.69 722 725 168.3
C 3 233 69922 411.11 722 725 168.3
C 12 249 35580 207.08 722 725 168.3
D 1 52 862810 4921.43 694 670 175.2
D 2 249 783183 4466.89 694 670 175.2
D 12 233 143314 814.27 694 670 175.2

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