ASTROSAT CZTI

Data Quality Report

Orbit 36265

Creation date: 2022-06-13T15:43:51.467564
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_071T36_9000005182_36265cztM0_level2.evt modeM0/AS1A10_071T36_9000005182_36265cztM0_level2_quad_clean.evt
Size (bytes)531,763,20066,415,680
Size507.1 MB 63.3 MB
Events in quadrant A3,001,960409,893
Events in quadrant B5,539,022380,118
Events in quadrant C3,191,953405,933
Events in quadrant D3,952,225382,938

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126833
B0205622
C0129972
D0159102

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6191140.226135%
B619182213.277338%
C6191340.549184%
D61911252.019060%

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 9447 6193 1 1 0.01% 0.02%
B 9447 6193 635 635 6.72% 10.25%
C 9447 6193 21 21 0.22% 0.34%
D 9447 6193 105 105 1.11% 1.70%

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 192099 1300.48 724 709 147.2
A 13 254 8857 55.37 724 709 147.2
A 3 137 7705 47.54 724 709 147.2
B 5 172 1451920 10997.59 683 664 132.0
B 4 171 935557 7084.6 683 664 132.0
B 5 236 341111 2579.9 683 664 132.0
C 15 214 260399 1576.14 703 709 164.8
C 0 10 171263 1035.15 703 709 164.8
C 15 208 15529 89.95 703 709 164.8
D 12 6 548539 3165.84 697 677 173.1
D 12 235 146083 840.23 697 677 173.1
D 13 171 135123 776.9 697 677 173.1

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