ASTROSAT CZTI

Data Quality Report

Orbit 01014

Creation date: 2024-06-27T14:06:09.715078
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/AS1P01_998T02_9000000190_01014cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01014cztM0_level2_quad_clean.evt
Size (bytes)1,018,768,320112,109,760
Size971.6 MB 106.9 MB
Events in quadrant A7,439,017755,558
Events in quadrant B8,077,423750,728
Events in quadrant C7,685,655727,525
Events in quadrant D7,234,122722,402

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265921
B0284351
C0273375
D0259671

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6293590.937550%
B62931031.636739%
C6292701.112524%
D6293490.778643%

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 7398 6294 236 236 3.19% 3.75%
B 7398 6294 428 428 5.79% 6.80%
C 7397 6293 252 252 3.41% 4.00%
D 7398 6294 182 182 2.46% 2.89%

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 12 189 8936 15.04 1936 1946 464.8
A 15 233 6696 10.22 1936 1946 464.8
A 11 79 6528 9.86 1936 1946 464.8
B 4 200 277761 586.77 1992 1998 470.0
B 5 249 38701 78.1 1992 1998 470.0
B 15 22 37255 75.02 1992 1998 470.0
C 15 241 312055 604.46 1851 1915 513.1
C 5 234 57977 109.27 1851 1915 513.1
C 3 79 31060 56.8 1851 1915 513.1
D 1 4 411668 739.22 1810 1873 554.4
D 9 49 33306 56.7 1810 1873 554.4
D 12 16 18981 30.86 1810 1873 554.4

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