ASTROSAT CZTI

Data Quality Report

Orbit 35869

Creation date: 2024-06-27T21:19:16.181076
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/AS1A11_080T01_9000005146_35869cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35869cztM0_level2_quad_clean.evt
Size (bytes)1,590,456,960162,532,800
Size1.5 GB 155.0 MB
Events in quadrant A18,326,1761,022,254
Events in quadrant B7,697,6681,069,615
Events in quadrant C8,841,3611,019,168
Events in quadrant D12,415,187897,539

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02720
B02720
C02720
D02720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0639004
B0307373
C0341253
D0455143

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13206275420.854157%
B132062461.862790%
C132065844.422232%
D13206209115.833712%

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 18916 13209 2172 2172 11.48% 16.44%
B 18916 13209 184 184 0.97% 1.39%
C 18916 13209 549 549 2.90% 4.16%
D 18916 13209 1780 1780 9.41% 13.48%

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 15 169 11215113 34866.85 1619 1597 321.6
A 7 48 505362 1566.39 1619 1597 321.6
A 10 83 305367 944.53 1619 1597 321.6
B 5 172 910061 2980.58 1641 1606 304.8
B 5 255 162764 528.75 1641 1606 304.8
B 0 190 65558 209.82 1641 1606 304.8
C 1 23 1674575 4636.94 1575 1591 360.8
C 15 214 534551 1477.18 1575 1591 360.8
C 0 10 342821 945.77 1575 1591 360.8
D 2 250 2913729 7981.83 1492 1451 364.9
D 8 230 1041490 2850.49 1492 1451 364.9
D 13 249 958393 2622.74 1492 1451 364.9

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