ASTROSAT CZTI

Data Quality Report

Orbit 26122

Creation date: 2024-06-27T19:25:04.754946
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_138T04_9000003776_26122cztM0_level2.evt modeM0/AS1A09_138T04_9000003776_26122cztM0_level2_quad_clean.evt
Size (bytes)560,923,20095,693,760
Size534.9 MB 91.3 MB
Events in quadrant A3,820,581620,813
Events in quadrant B3,334,709641,998
Events in quadrant C3,352,976604,513
Events in quadrant D6,027,570565,875

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156040
B0139910
C0140090
D0224500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6663671.005553%
B6663200.300165%
C6663761.140627%
D666274511.182828%

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 7693 6663 21 21 0.27% 0.32%
B 7693 6663 0 0 0.00% 0.00%
C 7693 6663 2 2 0.03% 0.03%
D 7691 6661 615 615 8.00% 9.23%

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 0 13 557670 3337.27 831 814 166.9
A 6 16 54398 321.13 831 814 166.9
A 13 254 10825 60.0 831 814 166.9
B 0 229 47091 290.84 834 815 159.1
B 0 190 24866 151.16 834 815 159.1
B 12 111 19386 116.72 834 815 159.1
C 14 238 128746 672.88 808 813 190.1
C 3 233 42096 217.13 808 813 190.1
C 2 16 33422 171.51 808 813 190.1
D 7 80 2797654 15115.28 777 761 185.0
D 12 233 126150 677.64 777 761 185.0
D 1 52 101268 543.17 777 761 185.0

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