ASTROSAT CZTI

Data Quality Report

Orbit 12164

Creation date: 2024-06-27T16:23:16.427106
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/AS1G08_065T01_9000001796_12164cztM0_level2.evt modeM0/AS1G08_065T01_9000001796_12164cztM0_level2_quad_clean.evt
Size (bytes)695,790,720117,907,200
Size663.6 MB 112.4 MB
Events in quadrant A4,150,949774,441
Events in quadrant B5,993,549745,311
Events in quadrant C4,274,695758,031
Events in quadrant D6,098,550723,908

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179153
B0234892
C0185682
D0240832

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81981241.512564%
B81986898.404489%
C81981702.073677%
D81987819.526714%

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 8659 8201 2 2 0.02% 0.02%
B 8659 8201 322 322 3.72% 3.93%
C 8659 8201 57 57 0.66% 0.70%
D 8659 8201 488 488 5.64% 5.95%

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 15 107486 530.85 978 954 200.7
A 1 162 101331 500.18 978 954 200.7
A 1 178 54964 269.13 978 954 200.7
B 4 239 1042987 5674.11 958 931 183.7
B 0 85 643373 3498.17 958 931 183.7
B 10 16 223210 1210.33 958 931 183.7
C 15 208 461894 2074.96 952 956 222.1
C 3 233 60246 266.9 952 956 222.1
C 14 234 24756 107.14 952 956 222.1
D 4 95 887588 4012.32 910 882 221.0
D 1 52 630525 2849.12 910 882 221.0
D 13 61 182089 819.96 910 882 221.0

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