ASTROSAT CZTI

Data Quality Report

Orbit 00994

Creation date: 2024-06-27T14:05:51.310756
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/AS1P01_998T01_9000000188_00994cztM0_level2.evt modeM0/AS1P01_998T01_9000000188_00994cztM0_level2_quad_clean.evt
Size (bytes)503,904,96045,771,840
Size480.6 MB 43.7 MB
Events in quadrant A3,606,564296,490
Events in quadrant B3,716,324301,042
Events in quadrant C3,456,054287,277
Events in quadrant D4,270,381276,237

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129640
B0132850
C0125410
D0149420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A316230.094877%
B316280.253004%
C316200.000000%
D3162381.201771%

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 3162 3162 36 36 1.14% 1.14%
B 3162 3162 65 65 2.06% 2.06%
C 3162 3162 26 26 0.82% 0.82%
D 3162 3162 341 341 10.78% 10.78%

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 15 127 12695 51.73 933 940 227.3
A 4 2 10744 43.14 933 940 227.3
A 11 242 3650 11.92 933 940 227.3
B 5 249 70761 312.45 939 945 223.4
B 15 22 22174 95.01 939 945 223.4
B 8 234 18015 76.39 939 945 223.4
C 15 241 153919 658.89 833 857 232.3
C 3 79 15121 61.4 833 857 232.3
C 3 111 15059 61.14 833 857 232.3
D 12 188 1037451 4084.37 835 862 253.8
D 1 4 77385 301.52 835 862 253.8
D 13 170 11977 43.8 835 862 253.8

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