ASTROSAT CZTI

Data Quality Report

Orbit 45991

Creation date: 2024-06-27T23:18:30.536326
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_017T01_9000006148_45991cztM0_level2.fits modeM0/AS1A13_017T01_9000006148_45991cztM0_level2_quad_clean.evt
Size (bytes)624,418,560100,074,240
Size595.5 MB 95.4 MB
Events in quadrant A6,949,655670,971
Events in quadrant B7,457,967598,664
Events in quadrant C3,707,935674,615
Events in quadrant D4,485,971624,233

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250721
B0266111
C0157421
D0179154

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66145197.846991%
B6615139721.118670%
C66153074.640967%
D66142944.445116%

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 7534 6614 173 173 2.30% 2.62%
B 7535 6615 1093 1093 14.51% 16.52%
C 7535 6615 237 237 3.15% 3.58%
D 7534 6614 244 244 3.24% 3.69%

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 2739091 18454.45 713 697 148.4
A 15 223 1306977 8803.22 713 697 148.4
A 2 79 145634 976.75 713 697 148.4
B 3 112 4737753 35589.04 674 653 133.1
B 12 48 25256 184.84 674 653 133.1
B 12 111 17313 125.16 674 653 133.1
C 14 254 904117 5392.59 715 720 167.5
C 3 233 10295 57.16 715 720 167.5
C 13 61 4736 23.97 715 720 167.5
D 1 52 1225931 6830.73 713 692 179.4
D 12 2 297308 1653.64 713 692 179.4
D 2 249 64255 354.36 713 692 179.4

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