ASTROSAT CZTI

Data Quality Report

Orbit 10421

Creation date: 2024-06-27T15:59:55.201325
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/AS1G07_068T02_9000001508_10421cztM0_level2.evt modeM0/AS1G07_068T02_9000001508_10421cztM0_level2_quad_clean.evt
Size (bytes)367,721,28072,875,520
Size350.7 MB 69.5 MB
Events in quadrant A2,700,162422,752
Events in quadrant B2,628,402453,650
Events in quadrant C2,393,365465,680
Events in quadrant D3,071,909512,735

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246141
B0246137
C0246135
D0233128

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229
B02613
C02613
D02411

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02742916650
B02968918924
C02520615045
D02689614260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4733250.528206%
B4699551.170462%
C4967140.281860%
D5682220.387188%

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 7429 5712 0 0 0.00% 0.00%
B 7429 5637 2 2 0.03% 0.04%
C 7430 5849 0 0 0.00% 0.00%
D 7430 6036 2 2 0.03% 0.03%

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 13 251 451485 3812.35 583 570 118.3
A 0 226 5212 39.25 583 570 118.3
A 12 194 4772 35.53 583 570 118.3
B 4 239 195184 1766.29 581 568 110.2
B 4 81 119554 1079.89 581 568 110.2
B 0 214 25664 227.77 581 568 110.2
C 14 234 6780 43.61 611 616 141.3
C 13 61 4387 26.68 611 616 141.3
C 14 67 3152 17.94 611 616 141.3
D 8 195 273796 1661.91 690 672 164.3
D 1 52 54463 327.31 690 672 164.3
D 1 20 45664 273.77 690 672 164.3

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