ASTROSAT CZTI

Data Quality Report

Orbit 39779

Creation date: 2024-06-27T22:08:54.614861
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_086T01_9000005496_39779cztM0_level2.fits modeM0/AS1T05_086T01_9000005496_39779cztM0_level2_quad_clean.evt
Size (bytes)424,895,040108,434,880
Size405.2 MB 103.4 MB
Events in quadrant A3,513,559778,812
Events in quadrant B2,816,740799,377
Events in quadrant C5,328,049690,831
Events in quadrant D3,676,154659,217

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138273
B0113272
C0193452
D0141512

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50751222.403941%
B507590.177340%
C50754719.280788%
D50751893.724138%

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 7107 5076 84 84 1.18% 1.65%
B 7107 5076 2 2 0.03% 0.04%
C 7107 5076 450 450 6.33% 8.87%
D 7107 5076 157 157 2.21% 3.09%

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 450300 3236.92 660 650 138.9
A 13 248 280672 2015.81 660 650 138.9
A 9 143 213163 1529.83 660 650 138.9
B 5 172 85715 662.3 653 641 128.5
B 5 32 63750 491.3 653 641 128.5
B 0 190 43435 333.15 653 641 128.5
C 9 187 1875128 12809.38 612 619 146.3
C 15 208 582572 3976.75 612 619 146.3
C 15 214 207183 1411.55 612 619 146.3
D 12 233 478136 3020.78 627 613 158.1
D 13 249 393948 2488.21 627 613 158.1
D 12 227 204191 1287.82 627 613 158.1

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