ASTROSAT CZTI

Data Quality Report

Orbit 39528

Creation date: 2024-06-27T22:05:44.312713
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/AS1A12_018T01_9000005488_39528cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39528cztM0_level2_quad_clean.evt
Size (bytes)398,088,00091,324,800
Size379.6 MB 87.1 MB
Events in quadrant A3,173,724627,181
Events in quadrant B2,729,578636,007
Events in quadrant C5,105,233551,718
Events in quadrant D3,284,198551,797

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129453
B0122082
C0189392
D0137252

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5697270.473934%
B5697681.193611%
C56975509.654204%
D56971412.474987%

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 7251 5698 14 14 0.19% 0.25%
B 7251 5698 34 34 0.47% 0.60%
C 7251 5698 534 534 7.36% 9.37%
D 7251 5698 95 95 1.31% 1.67%

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 459725 3649.33 620 607 125.8
A 15 222 179307 1420.41 620 607 125.8
A 13 248 112746 891.34 620 607 125.8
B 5 255 280098 2330.32 615 597 119.9
B 15 85 21942 177.96 615 597 119.9
B 12 111 14943 119.61 615 597 119.9
C 9 187 2463959 18052.21 586 590 136.5
C 15 214 248176 1814.37 586 590 136.5
C 15 208 72375 526.06 586 590 136.5
D 13 249 314081 2117.82 600 582 148.0
D 13 174 161211 1085.12 600 582 148.0
D 2 249 111171 747.08 600 582 148.0

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