ASTROSAT CZTI

Data Quality Report

Orbit 45774

Creation date: 2024-06-27T23:16:01.830587
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/AS1T05_183T01_9000006124_45774cztM0_level2.fits modeM0/AS1T05_183T01_9000006124_45774cztM0_level2_quad_clean.evt
Size (bytes)647,740,800105,912,000
Size617.7 MB 101.0 MB
Events in quadrant A6,404,673713,257
Events in quadrant B8,121,580662,232
Events in quadrant C3,772,850721,218
Events in quadrant D5,148,910633,060

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0235173
B0289712
C0160492
D0199842

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68382984.357999%
B6838124018.133957%
C68382183.188067%
D68384997.297455%

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 7748 6839 72 72 0.93% 1.05%
B 7748 6839 769 769 9.93% 11.24%
C 7748 6839 166 166 2.14% 2.43%
D 7748 6839 362 362 4.67% 5.29%

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 3002459 18456.22 773 756 162.6
A 13 248 391268 2401.1 773 756 162.6
A 13 254 12311 71.05 773 756 162.6
B 3 112 3520776 23677.45 753 729 148.7
B 4 171 874495 5877.35 753 729 148.7
B 0 171 242784 1628.17 753 729 148.7
C 14 96 631192 3455.44 770 776 182.4
C 14 254 74486 404.02 770 776 182.4
C 2 14 26318 140.0 770 776 182.4
D 13 249 771267 4098.44 749 728 188.0
D 2 249 656394 3487.44 749 728 188.0
D 1 52 230779 1223.62 749 728 188.0

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