ASTROSAT CZTI

Data Quality Report

Orbit 24944

Creation date: 2024-06-27T19:11:46.132948
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_200T01_9000003654_24944cztM0_level2.evt modeM0/AS1T03_200T01_9000003654_24944cztM0_level2_quad_clean.evt
Size (bytes)633,012,480133,629,120
Size603.7 MB 127.4 MB
Events in quadrant A3,335,760914,469
Events in quadrant B3,635,911927,220
Events in quadrant C6,852,837850,929
Events in quadrant D4,858,047852,119

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148180
B0154150
C0253620
D0192200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72142072.869421%
B72142022.800111%
C72144716.528971%
D72143014.172442%

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 7274 7216 0 0 0.00% 0.00%
B 7274 7216 17 17 0.23% 0.24%
C 7274 7216 2 2 0.03% 0.03%
D 7274 7216 99 99 1.36% 1.37%

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 11362 60.77 862 842 173.1
A 3 137 7922 40.9 862 842 173.1
A 0 226 7321 37.43 862 842 173.1
B 3 64 105101 647.87 850 826 160.9
B 6 36 48059 293.47 850 826 160.9
B 0 190 26011 156.48 850 826 160.9
C 7 247 3537909 18944.95 805 810 186.7
C 14 238 127686 679.56 805 810 186.7
C 0 207 26503 137.61 805 810 186.7
D 1 3 665718 3311.76 824 796 200.8
D 1 52 493223 2452.62 824 796 200.8
D 7 238 250197 1242.19 824 796 200.8

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