ASTROSAT CZTI

Data Quality Report

Orbit 01057

Creation date: 2024-06-27T14:06:48.547165
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_998T02_9000000190_01057cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01057cztM0_level2_quad_clean.evt
Size (bytes)955,621,440106,945,920
Size911.4 MB 102.0 MB
Events in quadrant A7,129,574720,763
Events in quadrant B7,545,812722,400
Events in quadrant C7,157,929691,361
Events in quadrant D6,706,413682,423

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254934
B0267101
C0255921
D0242101

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6041140.231750%
B6041390.645588%
C6042180.297915%
D6042170.281364%

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 7251 6042 192 192 2.65% 3.18%
B 7251 6042 259 259 3.57% 4.29%
C 7252 6043 154 154 2.12% 2.55%
D 7252 6043 194 194 2.68% 3.21%

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 0 253 15737 31.23 1849 1859 444.3
A 14 79 12831 24.69 1849 1859 444.3
A 15 233 6629 10.74 1849 1859 444.3
B 15 22 103688 227.77 1898 1906 446.9
B 5 249 92389 202.48 1898 1906 446.9
B 8 38 39433 83.98 1898 1906 446.9
C 15 241 313853 648.49 1732 1792 481.2
C 3 79 33090 65.04 1732 1792 481.2
C 3 111 26630 51.62 1732 1792 481.2
D 12 22 168339 318.33 1711 1773 523.2
D 11 176 44418 81.5 1711 1773 523.2
D 10 125 37951 69.14 1711 1773 523.2

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