ASTROSAT CZTI

Data Quality Report

Orbit 24754

Creation date: 2024-06-27T19:09:30.382900
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/AS1A07_018T08_9000003622_24754cztM0_level2.evt modeM0/AS1A07_018T08_9000003622_24754cztM0_level2_quad_clean.evt
Size (bytes)499,780,80082,019,520
Size476.6 MB 78.2 MB
Events in quadrant A3,422,207511,513
Events in quadrant B3,638,064514,308
Events in quadrant C4,082,855490,051
Events in quadrant D3,526,648489,223

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141292
B0147652
C0166552
D0145992

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6864911.325758%
B68641121.631702%
C68641702.476690%
D6864731.063520%

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 7844 6865 0 0 0.00% 0.00%
B 7844 6865 28 28 0.36% 0.41%
C 7844 6865 45 45 0.57% 0.66%
D 7844 6865 9 9 0.11% 0.13%

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 12063 63.15 886 867 177.3
A 3 137 7801 39.11 886 867 177.3
A 0 226 7681 38.43 886 867 177.3
B 5 172 74138 446.01 869 848 164.3
B 0 189 69351 416.88 869 848 164.3
B 0 190 50726 303.53 869 848 164.3
C 7 247 552797 2846.93 833 839 193.9
C 2 16 151353 776.33 833 839 193.9
C 14 238 132015 676.59 833 839 193.9
D 8 195 220050 1050.89 859 835 208.6
D 2 234 28068 130.55 859 835 208.6
D 2 120 14991 67.86 859 835 208.6

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