ASTROSAT CZTI

Data Quality Report

Orbit 40200

Creation date: 2024-06-27T22:13:31.757825
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/AS1A12_053T01_9000005530_40200cztM0_level2.fits modeM0/AS1A12_053T01_9000005530_40200cztM0_level2_quad_clean.evt
Size (bytes)308,724,48089,838,720
Size294.4 MB 85.7 MB
Events in quadrant A2,828,005612,423
Events in quadrant B2,468,023634,243
Events in quadrant C2,806,874594,367
Events in quadrant D2,947,864540,038

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113853
B0104282
C0112042
D0120802

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4841491.012188%
B4841130.268540%
C4841551.136129%
D48411212.499484%

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 6963 4842 36 36 0.52% 0.74%
B 6963 4842 4 4 0.06% 0.08%
C 6963 4842 42 42 0.60% 0.87%
D 6963 4842 93 93 1.34% 1.92%

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 445471 3845.3 570 560 115.7
A 13 248 106847 918.62 570 560 115.7
A 9 143 32603 276.94 570 560 115.7
B 4 171 65437 585.39 574 559 110.8
B 5 255 57243 511.46 574 559 110.8
B 0 229 26959 238.2 574 559 110.8
C 15 214 203910 1571.0 560 567 129.4
C 4 254 147700 1136.73 560 567 129.4
C 0 10 138073 1062.36 560 567 129.4
D 12 227 397559 2938.17 550 535 135.1
D 12 79 124903 920.38 550 535 135.1
D 1 47 100852 742.4 550 535 135.1

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