ASTROSAT CZTI

Data Quality Report

Orbit 10427

Creation date: 2024-06-27T15:59:48.216016
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/AS1G07_066T01_9000001510_10427cztM0_level2.evt modeM0/AS1G07_066T01_9000001510_10427cztM0_level2_quad_clean.evt
Size (bytes)395,058,24059,336,640
Size376.8 MB 56.6 MB
Events in quadrant A2,726,173297,950
Events in quadrant B2,802,683343,885
Events in quadrant C2,520,698393,323
Events in quadrant D3,576,831413,726

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0264137
B0264138
C0264140
D0255134

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A073
B084
C084
D062

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05084140395
B03631224934
C02660015220
D03499120647

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A36513218.792112%
B47491372.884818%
C5519360.652292%
D5635731.295475%

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 7030 4456 147 147 2.09% 3.30%
B 7029 5743 12 12 0.17% 0.21%
C 7030 6398 4 4 0.06% 0.06%
D 7030 6214 4 4 0.06% 0.06%

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 13 251 1026142 11604.48 421 412 88.4
A 3 80 60759 682.73 421 412 88.4
A 15 174 10016 108.65 421 412 88.4
B 4 239 514408 4719.49 555 539 108.9
B 4 81 31505 284.4 555 539 108.9
B 0 214 27972 251.95 555 539 108.9
C 14 234 21436 140.33 635 638 148.2
C 8 128 9910 62.56 635 638 148.2
C 8 112 5407 32.18 635 638 148.2
D 8 195 499758 3233.77 640 621 154.4
D 1 20 227201 1467.95 640 621 154.4
D 2 33 180169 1163.24 640 621 154.4

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