ASTROSAT CZTI

Data Quality Report

Orbit 47267

Creation date: 2024-06-27T23:33:31.742161
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/AS1A13_025T01_9000006312_47267cztM0_level2.fits modeM0/AS1A13_025T01_9000006312_47267cztM0_level2_quad_clean.evt
Size (bytes)339,675,84064,393,920
Size323.9 MB 61.4 MB
Events in quadrant A4,924,955402,051
Events in quadrant B2,309,737457,258
Events in quadrant C2,222,891425,617
Events in quadrant D2,795,861374,663

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174717
B0980412
C0946822
D01141924

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A411557814.046173%
B41131072.601507%
C41071243.019235%
D41063638.840721%

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 5007 4118 205 205 4.09% 4.98%
B 5007 4118 32 32 0.64% 0.78%
C 5007 4118 57 57 1.14% 1.38%
D 5007 4118 276 276 5.51% 6.70%

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 2329375 23898.61 459 449 97.5
A 9 191 734702 7534.64 459 449 97.5
A 15 235 78535 801.29 459 449 97.5
B 0 200 260045 2748.09 473 458 94.5
B 14 167 47981 503.1 473 458 94.5
B 0 183 35985 376.1 473 458 94.5
C 10 9 185141 1670.53 461 463 110.6
C 14 254 173834 1568.26 461 463 110.6
C 3 233 44685 400.02 461 463 110.6
D 6 112 727516 6439.55 446 431 112.9
D 12 1 84349 743.23 446 431 112.9
D 2 165 79887 703.72 446 431 112.9

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