ASTROSAT CZTI

Data Quality Report

Orbit 20287

Creation date: 2024-06-27T18:13:26.935812
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_174T01_9000003008_20287cztM0_level2.evt modeM0/AS1A05_174T01_9000003008_20287cztM0_level2_quad_clean.evt
Size (bytes)1,534,216,320229,170,240
Size1.4 GB 218.6 MB
Events in quadrant A9,004,0141,451,907
Events in quadrant B10,907,3921,463,167
Events in quadrant C8,822,6441,402,481
Events in quadrant D16,496,3671,362,449

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0385214
B0443124
C0376784
D0614524

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182942051.120586%
B182949345.105499%
C182941931.054991%
D1829411236.138625%

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 20344 18298 46 46 0.23% 0.25%
B 20344 18298 430 430 2.11% 2.35%
C 20344 18298 2 2 0.01% 0.01%
D 20344 18298 832 832 4.09% 4.55%

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 14 238 210378 469.4 2198 2143 443.6
A 12 96 105134 232.16 2198 2143 443.6
A 8 205 102814 226.93 2198 2143 443.6
B 4 142 1622710 3930.39 2159 2101 412.3
B 7 220 323785 780.17 2159 2101 412.3
B 0 197 280943 676.26 2159 2101 412.3
C 14 238 326861 660.26 2109 2122 491.8
C 3 233 166401 334.01 2109 2122 491.8
C 9 54 70139 138.29 2109 2122 491.8
D 1 52 8199144 15951.65 2116 2054 513.9
D 2 234 99653 189.93 2116 2054 513.9
D 5 222 73793 139.61 2116 2054 513.9

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