ASTROSAT CZTI

Data Quality Report

Orbit 41660

Creation date: 2024-06-27T22:31:15.146915
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/AS1T05_116T01_9000005682_41660cztM0_level2.fits modeM0/AS1T05_116T01_9000005682_41660cztM0_level2_quad_clean.evt
Size (bytes)387,342,72092,332,800
Size369.4 MB 88.1 MB
Events in quadrant A3,071,616633,762
Events in quadrant B3,253,341649,819
Events in quadrant C3,095,558593,525
Events in quadrant D4,483,919528,679

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124572
B0132962
C0126212
D0172612

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5575430.771300%
B5575440.789238%
C55751753.139013%
D55754758.520179%

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 7337 5576 25 25 0.34% 0.45%
B 7337 5576 22 22 0.30% 0.39%
C 7337 5576 159 159 2.17% 2.85%
D 7337 5576 412 412 5.62% 7.39%

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 548883 4246.08 628 615 129.1
A 13 248 64970 498.4 628 615 129.1
A 3 1 13836 102.39 628 615 129.1
B 7 202 361266 2999.08 619 601 120.3
B 0 186 327660 2719.63 619 601 120.3
B 0 190 66144 545.02 619 601 120.3
C 0 10 484664 3466.84 597 600 139.6
C 15 214 226793 1619.98 597 600 139.6
C 4 254 35392 249.18 597 600 139.6
D 13 249 1003427 6940.11 592 576 144.5
D 1 47 687905 4756.58 592 576 144.5
D 2 249 204659 1412.33 592 576 144.5

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