ASTROSAT CZTI

Data Quality Report

Orbit 40408

Creation date: 2024-06-27T22:15:44.448934
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_056T02_9000005538_40408cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40408cztM0_level2_quad_clean.evt
Size (bytes)518,973,12093,196,800
Size494.9 MB 88.9 MB
Events in quadrant A3,543,871671,301
Events in quadrant B3,600,196687,085
Events in quadrant C2,842,048658,938
Events in quadrant D8,761,564388,619

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142103
B0147032
C0121242
D0301592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5956871.460712%
B5956741.242445%
C595660.100739%
D5956235539.539960%

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 8673 5958 76 76 0.88% 1.28%
B 8673 5958 38 38 0.44% 0.64%
C 8673 5958 3 3 0.03% 0.05%
D 8672 5957 1629 1629 18.78% 27.35%

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 513092 3836.67 653 640 133.6
A 13 248 317874 2375.1 653 640 133.6
A 9 143 99399 739.4 653 640 133.6
B 7 202 763967 6042.51 652 635 126.3
B 4 170 102290 804.7 652 635 126.3
B 5 255 64713 507.24 652 635 126.3
C 15 214 257110 1695.52 643 647 151.3
C 14 254 40164 261.25 643 647 151.3
C 12 249 28094 181.46 643 647 151.3
D 12 227 5080121 39555.84 517 504 128.4
D 2 250 1264498 9842.94 517 504 128.4
D 13 171 168860 1311.02 517 504 128.4

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