ASTROSAT CZTI

Data Quality Report

Orbit 44199

Creation date: 2024-06-27T23:00:26.264654
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/AS1A13_074T09_9000005968_44199cztM0_level2.fits modeM0/AS1A13_074T09_9000005968_44199cztM0_level2_quad_clean.evt
Size (bytes)540,023,040115,623,360
Size515.0 MB 110.3 MB
Events in quadrant A5,046,660801,312
Events in quadrant B4,118,458819,096
Events in quadrant C3,638,402800,131
Events in quadrant D6,682,042627,294

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0199662
B0165192
C0150362
D0243862

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65002313.553846%
B65003044.676923%
C65001271.953846%
D6500104616.092308%

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 7710 6501 8 8 0.10% 0.12%
B 7710 6501 102 102 1.32% 1.57%
C 7710 6501 39 39 0.51% 0.60%
D 7710 6500 802 802 10.40% 12.34%

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 1649619 9727.57 821 806 169.5
A 2 79 123085 721.41 821 806 169.5
A 0 243 35240 203.15 821 806 169.5
B 5 172 300403 1912.43 812 791 156.7
B 5 255 201943 1283.96 812 791 156.7
B 0 219 93350 590.81 812 791 156.7
C 14 254 314399 1636.12 816 823 191.7
C 4 254 66743 343.94 816 823 191.7
C 3 233 46752 239.64 816 823 191.7
D 1 52 1835964 9909.98 738 717 185.2
D 11 176 450234 2427.31 738 717 185.2
D 8 131 306557 1651.48 738 717 185.2

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