ASTROSAT CZTI

Data Quality Report

Orbit 52628

Creation date: 2025-06-24T13:42:54.631895
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/AS1C09_011T06_9000006478_52628cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52628cztM0_level2_quad_clean.evt
Size (bytes)801,996,48080,055,360
Size764.8 MB 76.3 MB
Events in quadrant A2,962,250623,429
Events in quadrant B6,622,972548,652
Events in quadrant C8,608,257448,764
Events in quadrant D11,001,389359,000

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135732
B0241152
C0300302
D0371002

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6364751.178504%
B6364131420.647392%
C6364184528.991201%
D6364265541.719045%

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 7510 6365 23 23 0.31% 0.36%
B 7510 6364 903 903 12.02% 14.19%
C 7510 6364 1573 1573 20.95% 24.72%
D 7510 6365 2370 2370 31.56% 37.23%

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 8 246 83093 496.13 668 651 166.2
A 3 14 27937 164.2 668 651 166.2
A 3 46 25673 150.58 668 651 166.2
B 10 128 2764448 21623.36 608 587 127.8
B 10 254 596546 4662.55 608 587 127.8
B 8 234 333759 2606.61 608 587 127.8
C 15 248 5244104 32506.8 575 568 161.3
C 15 147 450954 2792.12 575 568 161.3
C 13 3 219081 1354.65 575 568 161.3
D 6 42 2513433 16124.71 537 511 155.8
D 12 33 1708229 10957.94 537 511 155.8
D 2 62 1668300 10701.73 537 511 155.8

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