ASTROSAT CZTI

Data Quality Report

Orbit 29628

Creation date: 2024-06-27T20:06:12.030307
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_286T01_9000004268_29628cztM0_level2.evt modeM0/AS1T03_286T01_9000004268_29628cztM0_level2_quad_clean.evt
Size (bytes)468,066,240115,738,560
Size446.4 MB 110.4 MB
Events in quadrant A3,009,160772,092
Events in quadrant B3,123,638799,508
Events in quadrant C3,333,893770,976
Events in quadrant D4,285,864728,095

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132301
B0135381
C0141811
D0170401

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6230160.256822%
B6231390.625903%
C62301382.215088%
D62302634.221509%

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 7430 6231 0 0 0.00% 0.00%
B 7431 6232 1 1 0.01% 0.02%
C 7430 6230 2 2 0.03% 0.03%
D 7430 6231 189 189 2.54% 3.03%

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 11082 66.11 779 762 156.1
A 3 137 7418 42.64 779 762 156.1
A 0 226 6488 36.68 779 762 156.1
B 0 190 22915 152.06 784 764 145.7
B 12 111 17482 114.77 784 764 145.7
B 0 189 16850 110.43 784 764 145.7
C 14 238 145050 811.93 770 777 177.7
C 10 22 63245 351.55 770 777 177.7
C 3 233 45433 251.31 770 777 177.7
D 7 238 770893 4311.38 756 736 178.6
D 7 80 269681 1505.57 756 736 178.6
D 8 195 204766 1142.17 756 736 178.6

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