ASTROSAT CZTI

Data Quality Report

Orbit 35281

Creation date: 2022-04-07T23:29:46.409029
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_082T01_9000005056_35281cztM0_level2.evt modeM0/AS1A11_082T01_9000005056_35281cztM0_level2_quad_clean.evt
Size (bytes)690,949,44075,830,400
Size658.9 MB 72.3 MB
Events in quadrant A2,706,317511,060
Events in quadrant B8,843,901415,025
Events in quadrant C4,831,475492,639
Events in quadrant D4,151,929471,582

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118243
B0302342
C0184062
D0160402

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A579160.103609%
B5791245142.324296%
C57912414.161630%
D57923826.595304%

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 7134 5792 0 0 0.00% 0.00%
B 7133 5791 2013 2013 28.22% 34.76%
C 7134 5792 214 214 3.00% 3.69%
D 7135 5793 358 358 5.02% 6.18%

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 105161 775.76 666 651 134.7
A 13 6 15797 112.43 666 651 134.7
A 13 254 9526 65.88 666 651 134.7
B 5 172 3528326 34768.22 529 517 101.5
B 5 236 3191259 31446.27 529 517 101.5
B 4 232 15678 149.42 529 517 101.5
C 4 254 1515883 10263.66 635 638 147.6
C 0 10 571572 3867.28 635 638 147.6
C 15 214 234627 1584.95 635 638 147.6
D 12 227 456762 2962.82 634 616 154.0
D 2 250 302582 1961.37 634 616 154.0
D 7 80 212569 1376.71 634 616 154.0

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