ASTROSAT CZTI

Data Quality Report

Orbit 22995

Creation date: 2024-06-27T18:48:29.202304
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/AS1A08_004T03_9000003400_22995cztM0_level2.evt modeM0/AS1A08_004T03_9000003400_22995cztM0_level2_quad_clean.evt
Size (bytes)455,227,20091,952,640
Size434.1 MB 87.7 MB
Events in quadrant A3,116,863591,389
Events in quadrant B3,269,036601,357
Events in quadrant C3,156,164571,250
Events in quadrant D3,794,362558,818

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136351
B0139241
C0136071
D0156472

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6625240.362264%
B6625410.618868%
C6625590.890566%
D6624470.709541%

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 7625 6626 0 0 0.00% 0.00%
B 7625 6626 4 4 0.05% 0.06%
C 7625 6626 0 0 0.00% 0.00%
D 7624 6625 22 22 0.29% 0.33%

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 11 47 18145 107.1 800 781 162.1
A 14 237 12153 70.14 800 781 162.1
A 13 254 9750 55.32 800 781 162.1
B 0 189 83097 537.93 801 780 153.0
B 0 190 33501 213.83 801 780 153.0
B 4 216 19731 123.84 801 780 153.0
C 14 238 121496 666.68 772 777 181.1
C 0 10 17715 93.54 772 777 181.1
C 7 247 6013 28.92 772 777 181.1
D 1 52 515874 2728.44 781 760 188.8
D 13 153 94620 497.15 781 760 188.8
D 2 152 60982 318.98 781 760 188.8

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