ASTROSAT CZTI

Data Quality Report

Orbit 31141

Creation date: 2024-06-27T20:23:52.061363
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_071T66_9000004498_31141cztM0_level2.evt modeM0/AS1A10_071T66_9000004498_31141cztM0_level2_quad_clean.evt
Size (bytes)724,907,52099,213,120
Size691.3 MB 94.6 MB
Events in quadrant A3,928,515630,453
Events in quadrant B6,469,191623,246
Events in quadrant C4,298,545602,162
Events in quadrant D6,709,915584,950

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169402
B0251852
C0178452
D0256862

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81061421.751789%
B81073143.873196%
C81072673.293450%
D81072763.404465%

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 8706 8108 3 3 0.03% 0.04%
B 8707 8109 14 14 0.16% 0.17%
C 8707 8109 65 65 0.75% 0.80%
D 8707 8109 97 97 1.11% 1.20%

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 16242 74.25 1012 987 205.4
A 3 137 10538 46.49 1012 987 205.4
A 11 29 9853 43.16 1012 987 205.4
B 6 159 2297023 11732.71 1000 973 195.7
B 0 190 127040 644.2 1000 973 195.7
B 0 230 31716 157.1 1000 973 195.7
C 0 10 171308 741.14 969 975 229.8
C 14 238 151433 654.66 969 975 229.8
C 3 233 128303 554.02 969 975 229.8
D 8 195 2784190 11001.04 967 943 253.0
D 13 249 160611 631.1 967 943 253.0
D 2 250 35784 137.71 967 943 253.0

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