ASTROSAT CZTI

Data Quality Report

Orbit 26100

Creation date: 2024-06-27T19:24:43.194615
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/AS1A09_018T01_9000003774_26100cztM0_level2.evt modeM0/AS1A09_018T01_9000003774_26100cztM0_level2_quad_clean.evt
Size (bytes)489,395,52093,107,520
Size466.7 MB 88.8 MB
Events in quadrant A3,507,958604,246
Events in quadrant B3,630,506612,644
Events in quadrant C3,505,820574,483
Events in quadrant D3,730,391569,747

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140900
B0144850
C0141890
D0148580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65811452.203313%
B65811672.537608%
C65811993.023857%
D65811662.522413%

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 7641 6581 0 0 0.00% 0.00%
B 7641 6581 4 4 0.05% 0.06%
C 7641 6581 0 0 0.00% 0.00%
D 7641 6581 64 64 0.84% 0.97%

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 9984 49.37 910 894 184.1
A 3 137 8084 39.05 910 894 184.1
A 0 226 7784 37.43 910 894 184.1
B 4 80 75878 440.37 897 877 170.3
B 3 64 32863 187.8 897 877 170.3
B 12 111 20765 116.77 897 877 170.3
C 14 238 139073 691.09 860 865 200.0
C 6 80 7783 34.59 860 865 200.0
C 13 61 6013 25.74 860 865 200.0
D 12 233 252414 1215.44 874 857 207.0
D 7 80 42572 201.55 874 857 207.0
D 7 223 37413 176.63 874 857 207.0

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