ASTROSAT CZTI

Data Quality Report

Orbit 20210521_A10_053T14_9000004390_level2

Creation date: 2021-05-22T12:51:19.996834
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/AS1A10_053T14_9000004390cztM0_level2_bc.evt modeM0/AS1A10_053T14_9000004390cztM0_level2_quad_clean.evt
Size (bytes)1,372,887,360336,035,520
Size1.3 GB 320.5 MB
Events in quadrant A6,867,5912,164,866
Events in quadrant B14,811,9932,116,076
Events in quadrant C8,811,0192,003,292
Events in quadrant D9,252,8132,041,174

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0599270
B0860660
C0692840
D0660180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05480
B05480
C05480
D05480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A269356262.324114%
B2693510013.716354%
C2693513805.123445%
D269354791.778355%

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 32885 26936 46 46 0.14% 0.17%
B 32885 26937 75 75 0.23% 0.28%
C 32885 26936 60 60 0.18% 0.22%
D 32885 26937 61 61 0.19% 0.23%

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 96 450619 1297.18 1640 1622 346.1
A 8 192 50284 140.59 1640 1622 346.1
A 13 254 46383 129.32 1640 1622 346.1
B 6 159 7132541 23538.76 1622 1593 302.9
B 6 36 1023204 3372.27 1622 1593 302.9
B 0 229 188855 618.14 1622 1593 302.9
C 3 233 1068498 3041.9 1510 1511 350.8
C 15 208 1057606 3010.85 1510 1511 350.8
C 10 22 690273 1963.61 1510 1511 350.8
D 8 195 1135352 3167.81 1599 1559 357.9
D 1 52 798566 2226.83 1599 1559 357.9
D 12 227 433025 1205.51 1599 1559 357.9

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