ASTROSAT CZTI

Data Quality Report

Orbit 44662

Creation date: 2024-06-27T23:05:02.143689
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/AS1A13_072T01_9000006008_44662cztM0_level2.fits modeM0/AS1A13_072T01_9000006008_44662cztM0_level2_quad_clean.evt
Size (bytes)434,926,080110,615,040
Size414.8 MB 105.5 MB
Events in quadrant A5,190,319736,882
Events in quadrant B3,329,304775,660
Events in quadrant C3,122,180739,278
Events in quadrant D3,964,104654,247

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206282
B0142522
C0138192
D0162962

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63541642.581051%
B6354971.526597%
C6354520.818382%
D63542143.367957%

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 7599 6355 30 30 0.39% 0.47%
B 7599 6355 32 32 0.42% 0.50%
C 7599 6355 26 26 0.34% 0.41%
D 7599 6355 144 144 1.89% 2.27%

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 10 83 1929139 13065.33 717 702 147.6
A 15 223 314057 2123.01 717 702 147.6
A 13 248 72188 484.32 717 702 147.6
B 0 246 128814 904.03 727 705 141.7
B 0 189 122187 857.27 727 705 141.7
B 5 172 72709 508.11 727 705 141.7
C 14 254 286059 1715.51 713 718 166.3
C 12 2 32353 190.19 713 718 166.3
C 3 233 12452 70.55 713 718 166.3
D 1 52 691055 3971.35 695 673 173.8
D 2 249 186414 1068.46 695 673 173.8
D 13 249 159867 915.75 695 673 173.8

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