ASTROSAT CZTI

Data Quality Report

Orbit 28817

Creation date: 2024-06-27T19:56:44.836341
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/AS1A10_121T01_9000004134_28817cztM0_level2.evt modeM0/AS1A10_121T01_9000004134_28817cztM0_level2_quad_clean.evt
Size (bytes)740,983,680117,290,880
Size706.7 MB 111.9 MB
Events in quadrant A3,560,732803,711
Events in quadrant B3,502,332834,797
Events in quadrant C4,528,637778,304
Events in quadrant D10,381,450652,511

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149682
B0148032
C0182822
D0357662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6915470.679682%
B6916680.983227%
C69162463.556969%
D6916215931.217467%

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 9160 6915 7 7 0.08% 0.10%
B 9161 6916 4 4 0.04% 0.06%
C 9161 6916 1 1 0.01% 0.01%
D 9161 6916 1906 1906 20.81% 27.56%

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 14 235 168500 970.2 867 851 172.8
A 14 239 20973 116.45 867 851 172.8
A 13 254 13665 74.16 867 851 172.8
B 5 172 31137 184.84 876 855 163.8
B 12 111 19319 112.71 876 855 163.8
B 11 111 16941 98.19 876 855 163.8
C 3 233 1023884 5267.89 838 843 194.2
C 14 238 173740 890.29 838 843 194.2
C 14 254 57627 292.4 838 843 194.2
D 8 195 5182139 28798.48 758 739 179.9
D 1 52 1134823 6303.3 758 739 179.9
D 13 104 954623 5301.74 758 739 179.9

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