ASTROSAT CZTI

Data Quality Report

Orbit 27896

Creation date: 2024-06-27T19:45:43.053149
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/AS1A10_048T01_9000004028_27896cztM0_level2.evt modeM0/AS1A10_048T01_9000004028_27896cztM0_level2_quad_clean.evt
Size (bytes)515,013,12087,744,960
Size491.2 MB 83.7 MB
Events in quadrant A3,083,936578,313
Events in quadrant B3,181,250583,898
Events in quadrant C3,308,182539,566
Events in quadrant D5,594,267513,189

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132170
B0134900
C0138530
D0210550

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6337490.773237%
B6337430.678555%
C6337871.372889%
D63374997.874389%

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 7022 6338 1 1 0.01% 0.02%
B 7022 6338 0 0 0.00% 0.00%
C 7022 6338 7 7 0.10% 0.11%
D 7022 6337 417 417 5.94% 6.58%

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 11393 65.7 797 783 161.5
A 8 192 10478 60.04 797 783 161.5
A 3 137 7807 43.5 797 783 161.5
B 0 230 47844 307.87 793 773 152.9
B 12 111 19022 119.36 793 773 152.9
B 11 111 16748 104.48 793 773 152.9
C 3 233 134561 754.56 750 754 177.3
C 2 16 130335 730.73 750 754 177.3
C 14 238 121838 682.82 750 754 177.3
D 1 52 1623105 9059.51 740 720 179.1
D 13 104 678236 3783.3 740 720 179.1
D 7 238 227665 1267.28 740 720 179.1

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