ASTROSAT CZTI

Data Quality Report

Orbit 44851

Creation date: 2024-06-27T23:07:12.833172
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_017T01_9000006028_44851cztM0_level2.fits modeM0/AS1A13_017T01_9000006028_44851cztM0_level2_quad_clean.evt
Size (bytes)510,243,840113,739,840
Size486.6 MB 108.5 MB
Events in quadrant A5,284,735772,599
Events in quadrant B3,616,969806,036
Events in quadrant C3,238,803773,801
Events in quadrant D6,258,460651,722

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0207252
B0148632
C0138082
D0230633

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62992453.889506%
B63001802.857143%
C63001041.650794%
D629973611.684394%

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 7544 6299 41 41 0.54% 0.65%
B 7545 6300 73 73 0.97% 1.16%
C 7545 6300 35 35 0.46% 0.56%
D 7544 6299 533 533 7.07% 8.46%

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 2203090 13844.78 768 753 159.1
A 13 248 103050 643.08 768 753 159.1
A 3 137 8337 47.68 768 753 159.1
B 5 255 234455 1555.95 773 751 150.2
B 7 221 78747 519.28 773 751 150.2
B 0 190 63508 417.82 773 751 150.2
C 14 254 109715 613.08 766 773 177.7
C 12 2 105011 586.6 766 773 177.7
C 1 3 21681 117.66 766 773 177.7
D 13 174 1556752 8336.13 743 722 186.7
D 5 235 762547 4081.33 743 722 186.7
D 2 249 555202 2970.52 743 722 186.7

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