ASTROSAT CZTI

Data Quality Report

Orbit 16766

Creation date: 2024-06-27T17:27:22.872127
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/AS1A05_004T05_9000002488_16766cztM0_level2.evt modeM0/AS1A05_004T05_9000002488_16766cztM0_level2_quad_clean.evt
Size (bytes)630,034,560104,981,760
Size600.8 MB 100.1 MB
Events in quadrant A3,489,911682,802
Events in quadrant B3,873,834681,985
Events in quadrant C6,352,867645,662
Events in quadrant D4,857,640648,028

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155053
B0164352
C0241862
D0195062

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7481520.695094%
B7481951.269884%
C74814475.975137%
D74812333.114557%

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 8182 7484 0 0 0.00% 0.00%
B 8182 7484 15 15 0.18% 0.20%
C 8182 7484 6 6 0.07% 0.08%
D 8182 7484 186 186 2.27% 2.49%

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 0 226 8158 39.44 906 887 184.4
A 3 1 7095 33.67 906 887 184.4
A 12 194 6623 31.11 906 887 184.4
B 15 35 220173 1251.72 903 880 175.2
B 3 209 20438 111.64 903 880 175.2
B 12 111 20355 111.16 903 880 175.2
C 3 233 2711867 13454.27 861 868 201.5
C 0 207 143942 710.05 861 868 201.5
C 14 238 130924 645.45 861 868 201.5
D 1 52 964781 4468.27 879 851 215.7
D 13 232 321841 1487.94 879 851 215.7
D 11 176 120463 554.46 879 851 215.7

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