ASTROSAT CZTI

Data Quality Report

Orbit 39759

Creation date: 2024-06-27T22:08:39.532965
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_022T01_9000005494_39759cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39759cztM0_level2_quad_clean.evt
Size (bytes)890,225,280255,398,400
Size849.0 MB 243.6 MB
Events in quadrant A8,295,4151,703,906
Events in quadrant B7,272,5031,750,975
Events in quadrant C8,167,9161,665,126
Events in quadrant D8,003,7201,532,107

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0347315
B0328194
C0345124
D0353134

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0530
B0530
C0530
D0530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15658950.606719%
B15658600.383191%
C15658510.325712%
D156581661.060161%

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 19776 15661 59 59 0.30% 0.38%
B 19776 15661 25 25 0.13% 0.16%
C 19776 15661 40 40 0.20% 0.26%
D 19776 15661 131 131 0.66% 0.84%

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 1159238 3373.96 1703 1666 343.1
A 13 248 414747 1204.0 1703 1666 343.1
A 6 10 70812 201.54 1703 1666 343.1
B 5 255 166082 508.88 1693 1643 323.1
B 5 172 149498 457.56 1693 1643 323.1
B 0 190 132577 405.19 1693 1643 323.1
C 15 214 646210 1685.85 1653 1661 382.3
C 9 187 615065 1604.39 1653 1661 382.3
C 15 208 327236 851.56 1653 1661 382.3
D 12 227 1020408 2543.56 1650 1602 400.5
D 13 249 210490 521.51 1650 1602 400.5
D 2 250 148113 365.78 1650 1602 400.5

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