ASTROSAT CZTI

Data Quality Report

Orbit 37706

Creation date: 2024-06-27T21:43:22.646694
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/AS1A11_075T01_9000005342_37706cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37706cztM0_level2_quad_clean.evt
Size (bytes)470,796,48055,932,480
Size449.0 MB 53.3 MB
Events in quadrant A4,017,820330,566
Events in quadrant B2,731,756336,403
Events in quadrant C2,902,843331,459
Events in quadrant D4,239,000316,362

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155133
B0114062
C0117682
D0162592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54081963.624260%
B5408140.258876%
C5408310.573225%
D54081582.921598%

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 7200 5407 132 132 1.83% 2.44%
B 7200 5407 6 6 0.08% 0.11%
C 7200 5407 32 32 0.44% 0.59%
D 7200 5407 160 160 2.22% 2.96%

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 13 248 600889 4630.77 646 635 129.6
A 15 222 531268 4093.66 646 635 129.6
A 10 83 319869 2462.79 646 635 129.6
B 5 172 60751 490.34 646 630 122.6
B 0 230 33649 269.3 646 630 122.6
B 15 32 28339 225.99 646 630 122.6
C 15 214 245248 1683.64 629 636 145.3
C 0 10 110521 756.33 629 636 145.3
C 14 254 81058 553.54 629 636 145.3
D 12 227 860087 5583.19 630 613 153.9
D 2 250 373568 2422.73 630 613 153.9
D 2 249 274536 1779.42 630 613 153.9

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