ASTROSAT CZTI

Data Quality Report

Orbit 17948

Creation date: 2024-06-27T17:42:58.795092
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/AS1T03_025T01_9000002670_17948cztM0_level2.evt modeM0/AS1T03_025T01_9000002670_17948cztM0_level2_quad_clean.evt
Size (bytes)429,842,880125,449,920
Size409.9 MB 119.6 MB
Events in quadrant A3,002,712852,359
Events in quadrant B3,093,559878,479
Events in quadrant C3,151,616841,019
Events in quadrant D3,368,542815,517

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128652
B0130681
C0132411
D0140191

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5910791.336717%
B5911861.454915%
C59111262.131619%
D59111582.672983%

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 7250 5911 11 11 0.15% 0.19%
B 7251 5912 1 1 0.01% 0.02%
C 7251 5911 1 1 0.01% 0.02%
D 7251 5912 78 78 1.08% 1.32%

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 15 174 44539 286.15 769 754 153.0
A 0 226 6649 38.53 769 754 153.0
A 12 194 5726 32.49 769 754 153.0
B 7 220 19479 130.84 778 760 143.1
B 12 111 15873 105.64 778 760 143.1
B 11 111 13515 89.15 778 760 143.1
C 14 238 118667 674.82 759 764 174.7
C 3 233 35526 198.96 759 764 174.7
C 5 218 22684 125.46 759 764 174.7
D 5 222 353069 1926.1 762 742 182.9
D 9 64 33474 178.94 762 742 182.9
D 10 70 26072 138.47 762 742 182.9

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