ASTROSAT CZTI

Data Quality Report

Orbit 52071

Creation date: 2025-05-14T18:10:18.268944
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_9000006468_52071cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_52071cztM0_level2_quad_clean.evt
Size (bytes)774,506,88044,864,640
Size738.6 MB 42.8 MB
Events in quadrant A4,346,974357,536
Events in quadrant B6,701,314289,513
Events in quadrant C6,465,708286,720
Events in quadrant D10,803,615104,133

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160580
B0230370
C0223420
D0351900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A455478417.215635%
B4554179839.481774%
C4555162235.609221%
D4555351177.080132%

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 4554 4554 733 733 16.10% 16.10%
B 4554 4554 1610 1610 35.35% 35.35%
C 4554 4554 1268 1268 27.84% 27.84%
D 4554 4554 3558 3558 78.13% 78.13%

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 3 95 1904915 17793.68 421 410 107.0
A 6 196 187483 1747.81 421 410 107.0
A 4 249 81545 758.04 421 410 107.0
B 10 128 3052806 40673.71 350 338 75.0
B 8 3 1752258 23344.09 350 338 75.0
B 5 185 136198 1810.32 350 338 75.0
C 15 224 4342095 41781.89 371 367 103.9
C 13 3 225443 2165.98 371 367 103.9
C 5 80 134814 1293.83 371 367 103.9
D 6 42 4250006 52813.5 275 262 80.5
D 15 94 3503281 43533.61 275 262 80.5
D 8 176 475843 5910.26 275 262 80.5

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