ASTROSAT CZTI

Data Quality Report

Orbit 25204

Creation date: 2024-06-27T19:15:01.781662
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/AS1A07_027T01_9000003690_25204cztM0_level2.evt modeM0/AS1A07_027T01_9000003690_25204cztM0_level2_quad_clean.evt
Size (bytes)541,825,92089,470,080
Size516.7 MB 85.3 MB
Events in quadrant A3,374,906569,077
Events in quadrant B4,084,322567,757
Events in quadrant C3,463,385544,336
Events in quadrant D5,003,785532,330

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145670
B0167600
C0147510
D0198010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7130570.799439%
B71301261.767181%
C7130941.318373%
D71301401.963534%

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 7660 7131 0 0 0.00% 0.00%
B 7660 7131 20 20 0.26% 0.28%
C 7660 7131 0 0 0.00% 0.00%
D 7660 7131 72 72 0.94% 1.01%

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 11931 62.75 875 855 176.5
A 3 137 8325 42.32 875 855 176.5
A 0 226 7402 37.09 875 855 176.5
B 5 235 640973 3936.85 862 842 162.6
B 3 64 21628 127.84 862 842 162.6
B 12 111 20441 120.54 862 842 162.6
C 14 238 133018 674.88 832 835 195.9
C 7 247 61203 308.22 832 835 195.9
C 3 233 14754 71.07 832 835 195.9
D 8 195 1182406 5792.67 841 818 204.0
D 2 244 218667 1067.99 841 818 204.0
D 12 235 186090 908.29 841 818 204.0

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