ASTROSAT CZTI

Data Quality Report

Orbit 20220507_A09_143T04_9000005120_level2

Creation date: 2022-05-11T13:57:49.778835
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/AS1A09_143T04_9000005120cztM0_level2_bc.evt modeM0/AS1A09_143T04_9000005120cztM0_level2_quad_clean.evt
Size (bytes)560,367,360226,094,400
Size534.4 MB 215.6 MB
Events in quadrant A3,038,5571,522,150
Events in quadrant B3,673,3401,516,408
Events in quadrant C4,539,5051,475,472
Events in quadrant D4,815,3811,423,303

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0272190
B0303940
C0318490
D0328510

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02720
B02720
C02720
D02720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13181110.083453%
B131812882.184963%
C131812992.268417%
D131811431.084895%

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 18021 13184 0 0 0.00% 0.00%
B 18021 13182 17 17 0.09% 0.13%
C 18021 13180 90 90 0.50% 0.68%
D 18021 13181 41 41 0.23% 0.31%

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 294472 1937.97 673 661 151.6
A 7 3 38197 247.59 673 661 151.6
A 13 6 35937 232.68 673 661 151.6
B 5 172 544959 4036.01 669 655 134.9
B 5 255 265502 1963.84 669 655 134.9
B 0 218 49641 363.23 669 655 134.9
C 0 207 841429 5618.74 646 640 149.6
C 15 214 523961 3497.2 646 640 149.6
C 0 10 354637 2365.65 646 640 149.6
D 10 203 1338665 8362.33 658 637 160.0
D 13 249 213680 1331.46 658 637 160.0
D 2 153 139218 866.1 658 637 160.0

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