ASTROSAT CZTI

Data Quality Report

Orbit 01334

Creation date: 2024-06-27T14:11:07.963295
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/AS1G04_002T02_9000000230_01334cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01334cztM0_level2_quad_clean.evt
Size (bytes)1,062,443,52098,784,000
Size1013.2 MB 94.2 MB
Events in quadrant A7,919,232641,078
Events in quadrant B8,279,878645,511
Events in quadrant C8,201,790629,952
Events in quadrant D7,338,160615,445

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0281912
B0293061
C0289941
D0265511

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6584200.303767%
B6584350.531592%
C6584140.212637%
D65841442.187120%

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 7334 6585 262 262 3.57% 3.98%
B 7334 6585 323 323 4.40% 4.91%
C 7334 6585 294 294 4.01% 4.46%
D 7334 6585 355 355 4.84% 5.39%

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 4 32 113478 231.55 1991 2002 481.4
A 15 233 71100 143.52 1991 2002 481.4
A 12 243 49398 98.45 1991 2002 481.4
B 8 4 195367 394.4 2070 2076 490.1
B 5 249 68672 135.89 2070 2076 490.1
B 15 22 66225 130.89 2070 2076 490.1
C 3 9 561758 1078.46 1859 1919 519.1
C 15 241 323521 619.53 1859 1919 519.1
C 3 111 21659 38.03 1859 1919 519.1
D 1 83 334889 600.86 1775 1834 554.3
D 10 84 289272 518.56 1775 1834 554.3
D 10 125 30096 50.99 1775 1834 554.3

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