ASTROSAT CZTI

Data Quality Report

Orbit 23490

Creation date: 2024-06-27T18:55:07.812075
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/AS1A07_100T02_9000003476_23490cztM0_level2.evt modeM0/AS1A07_100T02_9000003476_23490cztM0_level2_quad_clean.evt
Size (bytes)437,927,040101,502,720
Size417.6 MB 96.8 MB
Events in quadrant A2,906,568666,113
Events in quadrant B3,176,287690,099
Events in quadrant C3,384,542661,777
Events in quadrant D3,388,043637,584

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123691
B0133161
C0137531
D0137941

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5992140.233645%
B5992360.600801%
C59921542.570093%
D5992570.951268%

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 7217 5993 0 0 0.00% 0.00%
B 7217 5993 1 1 0.01% 0.02%
C 7217 5992 69 69 0.96% 1.15%
D 7217 5993 41 41 0.57% 0.68%

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 13 254 11043 68.28 752 736 150.9
A 0 226 6482 38.07 752 736 150.9
A 3 137 6151 35.87 752 736 150.9
B 0 189 107488 758.6 760 741 140.7
B 0 230 40648 283.6 760 741 140.7
B 0 229 40016 279.11 760 741 140.7
C 2 16 330757 1924.04 740 745 171.5
C 14 238 119230 690.79 740 745 171.5
C 7 247 36545 208.72 740 745 171.5
D 1 52 281151 1562.49 744 723 179.5
D 13 104 90078 497.87 744 723 179.5
D 12 233 77967 430.39 744 723 179.5

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