ASTROSAT CZTI

Data Quality Report

Orbit 20160924_G05_021T02_9000000680_level2

Creation date: 2025-11-06T15:56:56.343581
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/AS1G05_021T02_9000000680cztM0_level2.fits modeM0/AS1G05_021T02_9000000680cztM0_level2_quad_clean.evt
Size (bytes)635,451,840600,586,560
Size606.0 MB 572.8 MB
Events in quadrant A3,807,3383,464,631
Events in quadrant B3,731,7503,542,120
Events in quadrant C3,813,5763,438,190
Events in quadrant D3,097,8362,952,151

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01533810
B01494690
C01480990
D01920100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014180
B014180
C014180
D014180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6987716462.355568%
B6988112231.750118%
C698778641.236458%
D6986548246.904745%

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 80244 69865 0 0 0.00% 0.00%
B 80243 69872 0 0 0.00% 0.00%
C 80243 69872 0 0 0.00% 0.00%
D 80244 69555 0 0 0.00% 0.00%

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 14 188 3790 11.22 986 918 256.0
A 0 29 3767 11.13 986 918 256.0
A 7 110 3355 9.52 986 918 256.0
B 2 9 3290 11.68 985 933 201.8
B 12 226 2646 8.49 985 933 201.8
B 5 128 2581 8.17 985 933 201.8
C 1 80 2756 6.8 1005 926 268.9
C 12 241 2729 6.7 1005 926 268.9
C 1 81 2688 6.55 1005 926 268.9
D 11 82 2369 6.62 882 798 237.2
D 6 231 2307 6.36 882 798 237.2
D 3 14 2300 6.33 882 798 237.2

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