ASTROSAT CZTI

Data Quality Report

Orbit 08444

Creation date: 2024-06-27T15:32:49.671194
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/AS1A03_074T01_9000001192_08444cztM0_level2.evt modeM0/AS1A03_074T01_9000001192_08444cztM0_level2_quad_clean.evt
Size (bytes)574,894,08093,340,800
Size548.3 MB 89.0 MB
Events in quadrant A4,097,982553,069
Events in quadrant B4,433,220557,167
Events in quadrant C4,106,749569,447
Events in quadrant D4,190,992551,994

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01785134
B01874327
C01802723
D01831918

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85682032.369281%
B85712963.453506%
C85721792.088194%
D85741782.076044%

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 9005 8579 0 0 0.00% 0.00%
B 9005 8581 11 11 0.12% 0.13%
C 9005 8581 16 16 0.18% 0.19%
D 9005 8582 16 16 0.18% 0.19%

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 1 162 24531 109.41 1048 1024 214.9
A 0 226 9736 40.55 1048 1024 214.9
A 12 194 9508 39.48 1048 1024 214.9
B 10 245 147045 717.77 1046 1019 203.4
B 0 214 100994 491.41 1046 1019 203.4
B 11 51 80004 388.24 1046 1019 203.4
C 12 4 111974 468.09 1020 1019 237.0
C 13 61 8238 30.46 1020 1019 237.0
C 14 67 6182 21.78 1020 1019 237.0
D 2 152 114339 413.72 1012 989 274.0
D 7 71 78370 282.44 1012 989 274.0
D 14 34 43672 155.79 1012 989 274.0

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