ASTROSAT CZTI

Data Quality Report

Orbit 19024

Creation date: 2024-06-27T17:58:12.840872
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/AS1A06_003T05_9000002830_19024cztM0_level2.evt modeM0/AS1A06_003T05_9000002830_19024cztM0_level2_quad_clean.evt
Size (bytes)625,988,16089,801,280
Size597.0 MB 85.6 MB
Events in quadrant A4,338,722545,024
Events in quadrant B4,417,494549,484
Events in quadrant C4,294,375525,696
Events in quadrant D5,329,151507,565

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184932
B0185264
C0180572
D0213832

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85185636.609533%
B85185676.656492%
C85185286.198638%
D85185786.785630%

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 8813 8521 29 29 0.33% 0.34%
B 8813 8521 20 20 0.23% 0.23%
C 8813 8521 1 1 0.01% 0.01%
D 8813 8521 135 135 1.53% 1.58%

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 14 235 212659 974.56 1069 1043 217.1
A 0 226 9352 38.27 1069 1043 217.1
A 3 137 8938 36.36 1069 1043 217.1
B 3 112 182567 876.29 1064 1034 207.2
B 7 220 27483 127.67 1064 1034 207.2
B 12 111 25440 117.81 1064 1034 207.2
C 14 238 156119 648.47 1024 1026 239.2
C 3 233 109682 454.31 1024 1026 239.2
C 8 128 16110 63.07 1024 1026 239.2
D 7 238 805631 3135.81 1044 1011 256.6
D 1 52 413589 1607.92 1044 1011 256.6
D 9 68 111843 431.94 1044 1011 256.6

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