ASTROSAT CZTI

Data Quality Report

Orbit 35468

Creation date: 2022-04-21T02:23:21.240121
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_095T06_9000005078_35468cztM0_level2.evt modeM0/AS1A11_095T06_9000005078_35468cztM0_level2_quad_clean.evt
Size (bytes)405,673,92060,050,880
Size386.9 MB 57.3 MB
Events in quadrant A2,702,618363,170
Events in quadrant B2,708,239368,940
Events in quadrant C3,144,510358,777
Events in quadrant D3,353,084338,863

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113353
B0115062
C0124472
D0135982

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A554780.144222%
B5547200.360555%
C5547701.261943%
D55471642.956553%

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 9192 5549 0 0 0.00% 0.00%
B 9192 5549 4 4 0.04% 0.07%
C 9192 5549 46 46 0.50% 0.83%
D 9192 5549 154 154 1.68% 2.78%

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 127136 945.94 658 645 133.7
A 13 6 14545 103.95 658 645 133.7
A 15 169 10724 75.37 658 645 133.7
B 5 172 67585 529.2 653 635 126.5
B 4 232 39865 310.09 653 635 126.5
B 5 236 21983 168.74 653 635 126.5
C 0 10 288584 1917.13 638 643 150.2
C 15 214 231650 1538.06 638 643 150.2
C 0 207 124972 827.79 638 643 150.2
D 7 38 301435 1943.14 631 612 154.8
D 7 80 153817 989.61 631 612 154.8
D 8 195 141130 907.66 631 612 154.8

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