ASTROSAT CZTI

Data Quality Report

Orbit 34419

Creation date: 2022-02-08T16:52:42.408493
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/AS1A05_108T02_9000004914_34419cztM0_level2.evt modeM0/AS1A05_108T02_9000004914_34419cztM0_level2_quad_clean.evt
Size (bytes)432,927,36052,162,560
Size412.9 MB 49.7 MB
Events in quadrant A2,758,881307,504
Events in quadrant B3,108,974307,862
Events in quadrant C2,865,699306,087
Events in quadrant D4,018,878287,405

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115343
B0125142
C0115962
D0157192

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5284591.116578%
B52841542.914459%
C5284110.208176%
D5284701.324754%

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 7047 5285 36 36 0.51% 0.68%
B 7047 5285 100 100 1.42% 1.89%
C 7047 5285 7 7 0.10% 0.13%
D 7047 5285 57 57 0.81% 1.08%

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 9 143 219808 1719.97 644 633 127.4
A 10 83 34211 263.5 644 633 127.4
A 13 254 9831 72.18 644 633 127.4
B 5 172 411958 3401.01 632 615 120.9
B 0 229 100043 822.08 632 615 120.9
B 0 190 47582 388.33 632 615 120.9
C 15 214 224641 1548.59 630 635 144.7
C 14 67 97946 672.73 630 635 144.7
C 0 10 50146 342.28 630 635 144.7
D 8 195 1143766 7359.59 629 613 155.3
D 2 250 67702 431.92 629 613 155.3
D 13 249 57547 366.54 629 613 155.3

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