ASTROSAT CZTI

Data Quality Report

Orbit 41399

Creation date: 2024-06-27T22:29:05.015732
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_108T01_9000005664_41399cztM0_level2.fits modeM0/AS1T05_108T01_9000005664_41399cztM0_level2_quad_clean.evt
Size (bytes)311,590,08087,713,280
Size297.2 MB 83.6 MB
Events in quadrant A2,856,108588,000
Events in quadrant B2,466,558603,011
Events in quadrant C3,035,183552,365
Events in quadrant D2,760,336538,697

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119123
B0111502
C0125262
D0116462

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5333210.393775%
B5333140.262516%
C53332554.781549%
D5333260.487530%

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 7096 5334 8 8 0.11% 0.15%
B 7096 5334 7 7 0.10% 0.13%
C 7096 5334 239 239 3.37% 4.48%
D 7096 5334 19 19 0.27% 0.36%

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 521281 4453.21 570 557 116.9
A 13 248 82878 704.01 570 557 116.9
A 12 189 18640 154.65 570 557 116.9
B 5 255 123180 1114.88 571 555 110.0
B 0 190 69243 624.5 571 555 110.0
B 0 189 15766 138.3 571 555 110.0
C 0 10 681412 5382.12 542 544 126.5
C 15 214 218393 1722.05 542 544 126.5
C 12 249 11332 85.28 542 544 126.5
D 13 174 197763 1454.8 560 545 135.6
D 12 79 140474 1032.2 560 545 135.6
D 5 222 121376 891.33 560 545 135.6

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