ASTROSAT CZTI

Data Quality Report

Orbit 28904

Creation date: 2024-06-27T19:57:48.485403
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_064T01_9000004144_28904cztM0_level2.evt modeM0/AS1A10_064T01_9000004144_28904cztM0_level2_quad_clean.evt
Size (bytes)790,433,28092,617,920
Size753.8 MB 88.3 MB
Events in quadrant A3,093,303624,041
Events in quadrant B3,429,197646,282
Events in quadrant C6,772,099585,946
Events in quadrant D10,213,358502,684

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132722
B0142182
C0247605
D0347322

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A637890.141110%
B63781332.085293%
C63774537.103654%
D6377284644.629136%

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 7577 6378 0 0 0.00% 0.00%
B 7577 6378 117 117 1.54% 1.83%
C 7577 6377 110 110 1.45% 1.72%
D 7577 6377 3139 3139 41.43% 49.22%

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 12011 70.94 799 784 158.3
A 3 137 7607 43.11 799 784 158.3
A 0 226 6923 38.79 799 784 158.3
B 0 229 279728 1871.77 796 777 149.0
B 12 111 17831 114.43 796 777 149.0
B 11 111 16463 105.25 796 777 149.0
C 3 233 3624075 20344.88 767 773 178.1
C 14 238 129259 721.45 767 773 178.1
C 2 114 15146 80.7 767 773 178.1
D 8 195 7088664 42307.75 697 676 167.5
D 1 52 470436 2803.96 697 676 167.5
D 2 234 25305 147.01 697 676 167.5

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