ASTROSAT CZTI

Data Quality Report

Orbit 34785

Creation date: 2022-03-05T10:57:14.918474
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/AS1C07_004T01_9000004990_34785cztM0_level2.evt modeM0/AS1C07_004T01_9000004990_34785cztM0_level2_quad_clean.evt
Size (bytes)402,822,72047,597,760
Size384.2 MB 45.4 MB
Events in quadrant A2,582,026270,513
Events in quadrant B2,961,957282,292
Events in quadrant C2,797,813281,319
Events in quadrant D3,523,190261,201

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103333
B0116162
C0109202
D0137652

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4926260.527812%
B4926951.928542%
C4926430.872919%
D4926571.157125%

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 7079 4927 14 14 0.20% 0.28%
B 7079 4927 60 60 0.85% 1.22%
C 7079 4927 19 19 0.27% 0.39%
D 7079 4927 50 50 0.71% 1.01%

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 45534 357.52 632 622 125.6
A 8 192 40300 315.86 632 622 125.6
A 15 169 34552 270.1 632 622 125.6
B 5 172 328971 2754.48 634 619 119.2
B 0 190 38741 319.8 634 619 119.2
B 5 255 33252 273.75 634 619 119.2
C 15 214 211224 1467.83 628 635 143.5
C 0 10 110584 766.36 628 635 143.5
C 14 67 19812 133.67 628 635 143.5
D 8 195 859480 5643.04 623 606 152.2
D 2 249 99273 648.27 623 606 152.2
D 12 6 51733 335.92 623 606 152.2

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