ASTROSAT CZTI

Data Quality Report

Orbit 34402

Creation date: 2022-02-07T14:48:45.280441
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/AS1A05_085T01_9000004910_34402cztM0_level2.evt modeM0/AS1A05_085T01_9000004910_34402cztM0_level2_quad_clean.evt
Size (bytes)481,147,20070,364,160
Size458.9 MB 67.1 MB
Events in quadrant A2,613,693443,713
Events in quadrant B3,151,149442,017
Events in quadrant C2,816,358448,900
Events in quadrant D5,609,985403,770

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114563
B0129712
C0117092
D0207252

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5605240.428189%
B56051292.301517%
C5605140.249777%
D56055449.705620%

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 7188 5606 11 11 0.15% 0.20%
B 7188 5606 75 75 1.04% 1.34%
C 7188 5606 5 5 0.07% 0.09%
D 7188 5606 472 472 6.57% 8.42%

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 9 143 40087 298.62 653 639 132.1
A 10 83 34303 254.83 653 639 132.1
A 13 6 10408 73.95 653 639 132.1
B 5 172 482522 3888.76 644 626 123.9
B 5 255 52113 415.48 644 626 123.9
B 0 190 30243 239.0 644 626 123.9
C 15 214 238496 1608.61 635 640 147.9
C 0 10 47782 318.82 635 640 147.9
C 14 254 22059 144.86 635 640 147.9
D 7 80 1072509 7197.14 610 593 148.9
D 8 195 692981 4648.88 610 593 148.9
D 2 207 383711 2572.36 610 593 148.9

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