ASTROSAT CZTI

Data Quality Report

Orbit 37061

Creation date: 2024-06-27T21:34:59.078523
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/AS1A09_026T06_9000005278_37061cztM0_level2.evt modeM0/AS1A09_026T06_9000005278_37061cztM0_level2_quad_clean.evt
Size (bytes)469,195,20068,397,120
Size447.5 MB 65.2 MB
Events in quadrant A2,728,873438,014
Events in quadrant B3,813,810417,917
Events in quadrant C2,890,760427,211
Events in quadrant D4,408,501408,484

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115993
B0150022
C0118862
D0168462

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A541160.110885%
B54113466.394382%
C54111071.977453%
D54112825.211606%

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 6964 5412 6 6 0.09% 0.11%
B 6964 5412 255 255 3.66% 4.71%
C 6964 5412 75 75 1.08% 1.39%
D 6964 5412 310 310 4.45% 5.73%

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 261427 2101.18 614 602 124.1
A 9 143 59126 471.46 614 602 124.1
A 13 6 10529 79.97 614 602 124.1
B 5 172 677056 5949.68 594 579 113.7
B 5 184 420167 3690.31 594 579 113.7
B 0 190 169281 1483.75 594 579 113.7
C 0 10 240568 1734.41 595 600 138.4
C 15 214 228802 1649.37 595 600 138.4
C 14 254 59181 423.4 595 600 138.4
D 6 112 959704 6650.6 590 575 144.2
D 1 52 342420 2370.35 590 575 144.2
D 13 171 144534 998.21 590 575 144.2

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