ASTROSAT CZTI

Data Quality Report

Orbit 36235

Creation date: 2022-06-11T09:31:36.211072
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_080T02_9000005176_36235cztM0_level2.evt modeM0/AS1A11_080T02_9000005176_36235cztM0_level2_quad_clean.evt
Size (bytes)499,760,64052,873,920
Size476.6 MB 50.4 MB
Events in quadrant A2,673,189315,770
Events in quadrant B4,358,327304,446
Events in quadrant C2,909,445310,485
Events in quadrant D4,819,011282,555

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113543
B0166292
C0118522
D0181212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A552880.144718%
B552857610.419682%
C5528571.031114%
D55283907.054993%

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 7321 5529 0 0 0.00% 0.00%
B 7320 5528 439 439 6.00% 7.94%
C 7321 5529 33 33 0.45% 0.60%
D 7321 5529 340 340 4.64% 6.15%

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 187649 1445.48 637 624 129.4
A 13 6 9709 70.22 637 624 129.4
A 13 254 9656 69.81 637 624 129.4
B 5 236 1389999 11870.79 608 590 117.0
B 5 172 202962 1729.02 608 590 117.0
B 0 213 146969 1250.63 608 590 117.0
C 0 10 248579 1718.0 619 623 144.3
C 15 214 233462 1613.26 619 623 144.3
C 13 61 4166 24.55 619 623 144.3
D 12 227 1247201 8413.55 603 585 148.2
D 12 6 616242 4155.14 603 585 148.2
D 12 235 180463 1214.02 603 585 148.2

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