ASTROSAT CZTI

Data Quality Report

Orbit 09152

Creation date: 2024-06-27T15:42:00.614644
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/AS1C02_042T01_9000001278_09152cztM0_level2.evt modeM0/AS1C02_042T01_9000001278_09152cztM0_level2_quad_clean.evt
Size (bytes)537,675,84099,840,960
Size512.8 MB 95.2 MB
Events in quadrant A4,863,235620,917
Events in quadrant B3,637,902633,124
Events in quadrant C3,536,985620,603
Events in quadrant D3,710,243601,129

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196682
B0162636
C0162123
D0168013

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78802272.880711%
B78781582.005585%
C78791081.370732%
D78791652.094174%

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 7880 7880 2 2 0.03% 0.03%
B 7880 7880 1 1 0.01% 0.01%
C 7880 7880 1 1 0.01% 0.01%
D 7880 7880 41 41 0.52% 0.52%

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 8 5 1192752 6311.94 917 895 188.8
A 1 162 49113 255.36 917 895 188.8
A 5 16 36764 189.96 917 895 188.8
B 12 111 19752 106.9 924 899 176.4
B 11 111 15943 85.3 924 899 176.4
B 0 213 13543 71.7 924 899 176.4
C 8 128 18460 85.2 894 895 206.2
C 8 112 9269 40.62 894 895 206.2
C 8 144 7022 29.72 894 895 206.2
D 7 71 141393 604.86 890 864 232.3
D 1 52 82182 350.01 890 864 232.3
D 2 14 43637 184.1 890 864 232.3

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