ASTROSAT CZTI

Data Quality Report

Orbit 35686

Creation date: 2022-05-05T09:20:29.773463
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/AS1A09_029T04_9000005110_35686cztM0_level2.evt modeM0/AS1A09_029T04_9000005110_35686cztM0_level2_quad_clean.evt
Size (bytes)1,113,468,480144,671,040
Size1.0 GB 138.0 MB
Events in quadrant A6,589,051877,000
Events in quadrant B9,590,833871,523
Events in quadrant C6,984,363866,738
Events in quadrant D9,613,986801,696

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02860
B02860
C02860
D02860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0285865
B0376374
C0292664
D0381784

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13960180.128940%
B139619626.890624%
C13961400.286512%
D1396110257.341881%

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 24585 13965 1 1 0.00% 0.01%
B 24585 13964 747 747 3.04% 5.35%
C 24585 13966 32 32 0.13% 0.23%
D 24585 13966 880 880 3.58% 6.30%

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 325003 1002.86 1602 1571 322.5
A 13 6 37201 110.48 1602 1571 322.5
A 7 16 35610 105.54 1602 1571 322.5
B 5 172 2857016 9736.44 1553 1511 293.3
B 5 255 353768 1201.09 1553 1511 293.3
B 0 155 67871 226.27 1553 1511 293.3
C 15 214 583807 1632.21 1548 1559 356.7
C 0 10 216185 601.66 1548 1559 356.7
C 0 239 103250 285.07 1548 1559 356.7
D 13 249 2712082 7346.42 1508 1464 369.0
D 10 118 215960 581.33 1508 1464 369.0
D 2 31 214760 578.08 1508 1464 369.0

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