ASTROSAT CZTI

Data Quality Report

Orbit 46639

Creation date: 2024-06-27T23:25:45.348550
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_092T16_9000006244_46639cztM0_level2.fits modeM0/AS1A13_092T16_9000006244_46639cztM0_level2_quad_clean.evt
Size (bytes)560,747,520124,571,520
Size534.8 MB 118.8 MB
Events in quadrant A6,891,077855,521
Events in quadrant B3,903,736846,881
Events in quadrant C3,360,597815,823
Events in quadrant D6,016,337728,174

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250460
B0168110
C0157080
D0230750

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75511211.602437%
B7552801.059322%
C7551180.238379%
D75515437.191101%

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 7551 7551 21 21 0.28% 0.28%
B 7552 7552 32 32 0.42% 0.42%
C 7551 7551 10 10 0.13% 0.13%
D 7551 7551 458 458 6.07% 6.07%

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 3496183 19631.61 846 829 178.0
A 7 3 53063 293.37 846 829 178.0
A 0 243 18196 97.54 846 829 178.0
B 5 32 228543 1368.13 831 805 166.5
B 0 189 132151 789.05 831 805 166.5
B 0 198 57888 342.92 831 805 166.5
C 12 249 111452 570.97 818 823 193.8
C 14 254 14708 71.66 818 823 193.8
C 14 67 12925 62.46 818 823 193.8
D 1 52 1048215 5011.42 804 778 209.0
D 12 233 1003074 4795.45 804 778 209.0
D 13 249 404242 1930.36 804 778 209.0

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