ASTROSAT CZTI

Data Quality Report

Orbit 45695

Creation date: 2024-06-27T23:15:09.305309
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_028T01_9000006122_45695cztM0_level2.fits modeM0/AS1A13_028T01_9000006122_45695cztM0_level2_quad_clean.evt
Size (bytes)844,352,64090,267,840
Size805.2 MB 86.1 MB
Events in quadrant A5,950,941723,779
Events in quadrant B3,541,656742,826
Events in quadrant C16,114,902143,594
Events in quadrant D5,119,835648,042

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222241
B0150881
C0524967
D0199001

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68103114.566814%
B68102804.111601%
C6809567083.272140%
D68104326.343612%

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 7090 6810 10 10 0.14% 0.15%
B 7090 6810 57 57 0.80% 0.84%
C 7088 6808 5687 5687 80.23% 83.53%
D 7090 6810 353 353 4.98% 5.18%

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 2825658 17166.33 787 767 164.6
A 13 248 66405 398.87 787 767 164.6
A 0 243 15312 88.39 787 767 164.6
B 12 18 158527 1007.43 786 760 156.6
B 3 112 116761 740.73 786 760 156.6
B 0 186 47258 296.92 786 760 156.6
C 9 54 14194484 128944.99 467 469 110.1
C 14 254 70944 640.23 467 469 110.1
C 3 233 13053 114.32 467 469 110.1
D 2 165 1127963 5775.06 765 740 195.2
D 1 52 419994 2147.95 765 740 195.2
D 13 249 188435 961.61 765 740 195.2

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