ASTROSAT CZTI

Data Quality Report

Orbit 38000

Creation date: 2024-06-27T21:47:09.549909
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_082T01_9000005356_38000cztM0_level2.fits modeM0/AS1A11_082T01_9000005356_38000cztM0_level2_quad_clean.evt
Size (bytes)330,206,40092,635,200
Size314.9 MB 88.3 MB
Events in quadrant A2,997,653624,690
Events in quadrant B2,662,016645,257
Events in quadrant C2,576,957634,116
Events in quadrant D3,606,885558,911

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119183
B0108062
C0103932
D0138112

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4878290.594506%
B4878440.902009%
C4878120.246002%
D48782014.120541%

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 7002 4879 19 19 0.27% 0.39%
B 7002 4879 27 27 0.39% 0.55%
C 7002 4879 7 7 0.10% 0.14%
D 7002 4879 161 161 2.30% 3.30%

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 359374 3019.3 591 580 118.8
A 12 16 151152 1267.08 591 580 118.8
A 15 222 102967 861.6 591 580 118.8
B 4 171 126334 1133.6 587 573 110.9
B 5 172 54834 489.1 587 573 110.9
B 5 255 48847 435.14 587 573 110.9
C 15 214 211766 1572.72 582 587 134.3
C 1 23 48600 357.57 582 587 134.3
C 14 254 28582 208.49 582 587 134.3
D 1 52 742412 5313.43 574 560 139.6
D 1 47 232273 1659.62 574 560 139.6
D 7 223 89080 634.01 574 560 139.6

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