ASTROSAT CZTI

Data Quality Report

Orbit 18924

Creation date: 2024-06-27T17:56:37.713839
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/AS1A05_163T01_9000002820_18924cztM0_level2.evt modeM0/AS1A05_163T01_9000002820_18924cztM0_level2_quad_clean.evt
Size (bytes)660,562,56074,453,760
Size630.0 MB 71.0 MB
Events in quadrant A3,193,647454,437
Events in quadrant B5,092,443457,462
Events in quadrant C3,362,672450,857
Events in quadrant D7,895,168416,633

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138871
B0196672
C0140311
D0281701

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6807370.543558%
B68075247.697958%
C6807721.057735%
D6807173925.547231%

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 7252 6808 0 0 0.00% 0.00%
B 7252 6807 350 350 4.83% 5.14%
C 7252 6808 0 0 0.00% 0.00%
D 7252 6808 1136 1136 15.66% 16.69%

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 3 1 11580 63.94 822 803 168.5
A 9 143 10942 60.16 822 803 168.5
A 13 254 9843 53.64 822 803 168.5
B 3 112 1605905 10528.35 787 767 152.5
B 7 220 180948 1181.83 787 767 152.5
B 4 216 56083 362.83 787 767 152.5
C 3 233 154218 823.94 788 791 186.2
C 14 238 120935 645.2 788 791 186.2
C 8 128 7628 36.71 788 791 186.2
D 7 238 4869209 27175.34 722 698 179.2
D 1 52 127098 705.54 722 698 179.2
D 7 96 94039 521.01 722 698 179.2

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