ASTROSAT CZTI

Data Quality Report

Orbit 17500

Creation date: 2024-06-27T17:37:12.342847
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_194T05_9000002592_17500cztM0_level2.evt modeM0/AS1A05_194T05_9000002592_17500cztM0_level2_quad_clean.evt
Size (bytes)306,527,04051,557,760
Size292.3 MB 49.2 MB
Events in quadrant A2,165,027318,955
Events in quadrant B2,193,463322,887
Events in quadrant C2,234,511314,495
Events in quadrant D2,400,555305,478

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A12733597094080
B1-1-1
C1-1-1
D1-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A087831
B088471
C089121
D096011

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A424350.117841%
B424390.212114%
C4243240.565638%
D4243410.966297%

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 4243 4243 0 0 0.00% 0.00%
B 4243 4243 2 2 0.05% 0.05%
C 4243 4243 0 0 0.00% 0.00%
D 4243 4243 31 31 0.73% 0.73%

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 0 226 5094 40.45 561 552 112.3
A 12 194 4248 32.91 561 552 112.3
A 3 137 3564 26.82 561 552 112.3
B 0 230 17898 166.59 553 542 104.2
B 12 111 11527 105.44 553 542 104.2
B 11 111 10015 90.92 553 542 104.2
C 14 238 86467 687.63 539 543 125.0
C 5 218 32732 257.6 539 543 125.0
C 3 233 14203 109.32 539 543 125.0
D 1 52 119096 883.64 548 534 134.2
D 7 238 77862 576.33 548 534 134.2
D 7 38 34910 256.2 548 534 134.2

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