ASTROSAT CZTI

Data Quality Report

Orbit 45941

Creation date: 2024-06-27T23:17:58.316876
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/AS1A13_033T03_9000006144_45941cztM0_level2.fits modeM0/AS1A13_033T03_9000006144_45941cztM0_level2_quad_clean.evt
Size (bytes)545,713,920105,802,560
Size520.4 MB 100.9 MB
Events in quadrant A5,695,636706,299
Events in quadrant B6,149,504668,663
Events in quadrant C3,123,971720,741
Events in quadrant D4,702,969632,968

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0212471
B0228653
C0142841
D0185381

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68132183.199765%
B681294713.901938%
C6812670.983558%
D68134045.929840%

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 7268 6813 0 0 0.00% 0.00%
B 7267 6812 598 598 8.23% 8.78%
C 7267 6813 15 15 0.21% 0.22%
D 7268 6814 299 299 4.11% 4.39%

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 10 83 2692730 16663.99 766 748 161.5
A 0 247 25879 155.57 766 748 161.5
A 2 79 12294 71.47 766 748 161.5
B 3 112 3148933 21456.02 730 707 146.7
B 4 158 48147 323.32 730 707 146.7
B 4 171 30823 205.25 730 707 146.7
C 2 14 72743 405.11 755 759 177.7
C 14 254 50282 278.71 755 759 177.7
C 12 2 20028 108.44 755 759 177.7
D 12 233 481433 2540.53 745 721 189.2
D 1 47 469132 2475.52 745 721 189.2
D 6 143 361927 1908.95 745 721 189.2

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