ASTROSAT CZTI

Data Quality Report

Orbit 28893

Creation date: 2024-06-27T19:57:41.205645
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/AS1A10_064T01_9000004144_28893cztM0_level2.evt modeM0/AS1A10_064T01_9000004144_28893cztM0_level2_quad_clean.evt
Size (bytes)568,405,44065,021,760
Size542.1 MB 62.0 MB
Events in quadrant A3,000,971413,669
Events in quadrant B3,135,130420,514
Events in quadrant C4,503,679381,533
Events in quadrant D6,174,022339,376

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123071
B0127592
C0175541
D0223001

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5915330.557904%
B5915851.437025%
C59153966.694844%
D591584314.251902%

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 7225 5915 0 0 0.00% 0.00%
B 7225 5915 11 11 0.15% 0.19%
C 7225 5915 1 1 0.01% 0.02%
D 7225 5915 739 739 10.23% 12.49%

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 9319 55.36 776 765 154.5
A 3 137 7058 40.73 776 765 154.5
A 0 226 6464 36.88 776 765 154.5
B 10 245 59327 404.69 773 756 144.7
B 15 33 46272 314.49 773 756 144.7
B 12 111 17454 115.37 773 756 144.7
C 3 233 1389004 8334.76 724 730 166.6
C 14 238 181414 1084.77 724 730 166.6
C 14 254 92418 550.47 724 730 166.6
D 8 195 2459754 14735.51 706 688 166.9
D 1 52 955589 5722.07 706 688 166.9
D 13 104 95320 567.07 706 688 166.9

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