ASTROSAT CZTI

Data Quality Report

Orbit 37910

Creation date: 2024-06-27T21:46:02.034434
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/AS1T05_059T01_9000005354_37910cztM0_level2.evt modeM0/AS1T05_059T01_9000005354_37910cztM0_level2_quad_clean.evt
Size (bytes)491,996,16087,554,880
Size469.2 MB 83.5 MB
Events in quadrant A3,049,297580,265
Events in quadrant B3,577,680577,614
Events in quadrant C2,955,088591,578
Events in quadrant D4,948,803520,705

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122213
B0139282
C0120892
D0184082

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5448190.348752%
B54482073.799559%
C5448230.422173%
D544862911.545521%

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 9212 5450 12 12 0.13% 0.22%
B 9212 5450 125 125 1.36% 2.29%
C 9212 5450 19 19 0.21% 0.35%
D 9211 5446 396 396 4.30% 7.27%

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 362574 2693.66 673 662 134.4
A 12 227 24819 179.8 673 662 134.4
A 15 174 23938 173.24 673 662 134.4
B 5 172 495306 4013.67 660 645 123.2
B 4 232 272664 2207.16 660 645 123.2
B 0 230 67662 543.78 660 645 123.2
C 15 214 232688 1543.9 656 662 150.3
C 0 10 105252 695.94 656 662 150.3
C 14 254 42503 278.41 656 662 150.3
D 1 52 1746252 11547.54 626 611 151.2
D 2 249 242504 1600.14 626 611 151.2
D 1 47 118108 777.25 626 611 151.2

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