ASTROSAT CZTI

Data Quality Report

Orbit 19959

Creation date: 2024-06-27T18:09:12.281922
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/AS1A05_160T01_9000002970_19959cztM0_level2.evt modeM0/AS1A05_160T01_9000002970_19959cztM0_level2_quad_clean.evt
Size (bytes)1,060,813,440128,309,760
Size1011.7 MB 122.4 MB
Events in quadrant A10,885,227703,578
Events in quadrant B6,612,833805,884
Events in quadrant C6,818,759764,295
Events in quadrant D6,976,833758,545

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02500
B02500
C02500
D02500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0402312
B0270472
C0274942
D0285452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12336204416.569390%
B123371731.402286%
C123371541.248278%
D123372261.831888%

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 14671 12336 1649 1649 11.24% 13.37%
B 14672 12337 41 41 0.28% 0.33%
C 14672 12337 6 6 0.04% 0.05%
D 14672 12337 145 145 0.99% 1.18%

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 14 238 5183876 17840.83 1469 1444 290.5
A 14 254 23970 77.55 1469 1444 290.5
A 11 29 16607 52.2 1469 1444 290.5
B 7 220 160668 530.2 1593 1554 300.1
B 4 171 56651 183.59 1593 1554 300.1
B 3 64 53607 173.45 1593 1554 300.1
C 3 233 287229 811.39 1527 1542 352.1
C 9 221 283516 800.84 1527 1542 352.1
C 14 238 240750 679.38 1527 1542 352.1
D 12 233 545984 1444.17 1568 1526 377.0
D 12 218 236972 624.52 1568 1526 377.0
D 9 1 117212 306.86 1568 1526 377.0

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