ASTROSAT CZTI

Data Quality Report

Orbit 20191201_C05_002T01_9000003352_level2

Creation date: 2019-12-04T15:34:51.295813
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1C05_002T01_9000003352cztM0_level2.evt modeM0/AS1C05_002T01_9000003352cztM0_level2_quad_clean.evt
Size (bytes)1,084,371,840216,455,040
Size1.0 GB 206.4 MB
Events in quadrant A7,106,3231,381,584
Events in quadrant B7,320,1391,405,769
Events in quadrant C7,324,5741,360,963
Events in quadrant D10,028,7921,326,477

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320080
B0324660
C0322960
D0407840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15681560.357120%
B15681990.631337%
C156811601.020343%
D156814672.978126%

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 16431 15683 0 0 0.00% 0.00%
B 16431 15683 8 8 0.05% 0.05%
C 16431 15683 0 0 0.00% 0.00%
D 16431 15683 397 397 2.42% 2.53%

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 25037 63.17 1838 1799 367.9
A 3 137 16080 38.82 1838 1799 367.9
A 0 226 15567 37.42 1838 1799 367.9
B 15 33 71828 202.02 1832 1788 346.7
B 12 111 42764 118.19 1832 1788 346.7
B 11 111 37925 104.23 1832 1788 346.7
C 14 238 281677 677.92 1773 1785 412.9
C 10 222 99035 235.55 1773 1785 412.9
C 10 22 17156 37.23 1773 1785 412.9
D 1 52 1591634 3678.99 1773 1723 432.2
D 12 227 1466728 3389.97 1773 1723 432.2
D 10 199 93807 213.08 1773 1723 432.2

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