ASTROSAT CZTI

Data Quality Report

Orbit 36733

Creation date: 2024-06-27T21:30:55.934575
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/AS1A11_101T01_9000005238_36733cztM0_level2.evt modeM0/AS1A11_101T01_9000005238_36733cztM0_level2_quad_clean.evt
Size (bytes)451,051,20075,597,120
Size430.2 MB 72.1 MB
Events in quadrant A2,717,005487,692
Events in quadrant B3,276,803489,548
Events in quadrant C3,471,676477,695
Events in quadrant D3,814,438442,647

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117773
B0134492
C0138302
D0151172

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5594130.232392%
B55941392.484805%
C55941873.342867%
D55943616.453343%

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 7147 5595 1 1 0.01% 0.02%
B 7147 5595 82 82 1.15% 1.47%
C 7147 5595 125 125 1.75% 2.23%
D 7147 5595 329 329 4.60% 5.88%

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 235092 1803.63 636 624 130.0
A 13 254 10624 76.92 636 624 130.0
A 9 143 9911 71.44 636 624 130.0
B 5 200 211151 1728.61 631 614 121.8
B 4 171 173371 1418.42 631 614 121.8
B 0 213 80376 654.88 631 614 121.8
C 14 254 418593 2918.49 610 615 143.2
C 0 10 353886 2466.68 610 615 143.2
C 15 214 231616 1612.94 610 615 143.2
D 13 249 601513 4003.35 603 585 150.1
D 12 227 515582 3430.88 603 585 150.1
D 13 171 117640 779.81 603 585 150.1

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