ASTROSAT CZTI

Data Quality Report

Orbit 21701

Creation date: 2024-06-27T18:31:16.090448
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/AS1A07_039T02_9000003212_21701cztM0_level2.evt modeM0/AS1A07_039T02_9000003212_21701cztM0_level2_quad_clean.evt
Size (bytes)645,001,920129,824,640
Size615.1 MB 123.8 MB
Events in quadrant A3,189,431880,980
Events in quadrant B3,725,946893,583
Events in quadrant C8,166,563819,103
Events in quadrant D3,977,321849,620

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142891
B0155661
C0291401
D0165541

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70071281.826745%
B70082713.867009%
C7008148021.118721%
D70081742.482877%

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 7427 7008 0 0 0.00% 0.00%
B 7428 7008 86 86 1.16% 1.23%
C 7428 7009 707 707 9.52% 10.09%
D 7428 7009 54 54 0.73% 0.77%

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 13 254 13570 76.65 825 805 166.5
A 3 137 7073 37.64 825 805 166.5
A 0 226 6965 36.99 825 805 166.5
B 3 64 371979 2404.23 820 797 154.4
B 0 229 56879 363.26 820 797 154.4
B 15 36 32360 204.44 820 797 154.4
C 8 208 5023379 27976.98 772 773 179.5
C 14 238 121023 669.82 772 773 179.5
C 10 22 9905 50.87 772 773 179.5
D 7 238 365420 1866.46 813 788 195.4
D 1 52 287559 1467.91 813 788 195.4
D 14 35 119876 609.58 813 788 195.4

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