ASTROSAT CZTI

Data Quality Report

Orbit 41606

Creation date: 2024-06-27T22:30:38.716201
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/AS1A12_035T02_9000005680_41606cztM0_level2.fits modeM0/AS1A12_035T02_9000005680_41606cztM0_level2_quad_clean.evt
Size (bytes)592,839,36072,659,520
Size565.4 MB 69.3 MB
Events in quadrant A2,817,115612,703
Events in quadrant B2,354,144626,732
Events in quadrant C11,780,83794,472
Events in quadrant D4,614,334525,008

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112652
B0101253
C0382842
D0171012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0340
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4869380.780448%
B4868210.431389%
C4868416785.599836%
D48682825.792933%

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 6992 4870 18 18 0.26% 0.37%
B 6991 4869 6 6 0.09% 0.12%
C 6990 4868 3671 3671 52.52% 75.41%
D 6991 4869 280 280 4.01% 5.75%

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 502865 4332.05 568 557 116.0
A 2 79 58087 496.16 568 557 116.0
A 15 223 48724 415.41 568 557 116.0
B 0 245 49621 453.7 567 553 108.2
B 5 255 44847 409.55 567 553 108.2
B 0 186 16701 149.31 567 553 108.2
C 0 15 10383761 197537.1 223 223 52.6
C 0 10 422159 8026.94 223 223 52.6
C 15 214 95138 1805.67 223 223 52.6
D 12 79 1314434 10018.71 542 528 131.1
D 2 249 511525 3896.42 542 528 131.1
D 1 47 315115 2398.77 542 528 131.1

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