ASTROSAT CZTI

Data Quality Report

Orbit 54969

Creation date: 2025-11-25T19:34:27.677403
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/AS1A14_014T01_9000006528_54969cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54969cztM0_level2_quad_clean.evt
Size (bytes)731,952,00077,054,400
Size698.0 MB 73.5 MB
Events in quadrant A6,209,157472,639
Events in quadrant B2,915,262644,532
Events in quadrant C3,451,057567,337
Events in quadrant D14,020,876201,033

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229021
B0134861
C0149021
D0460741

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6416144222.475062%
B64161632.540524%
C64161993.101621%
D6416427566.630299%

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 7051 6416 1098 1098 15.57% 17.11%
B 7051 6417 12 12 0.17% 0.19%
C 7051 6417 79 79 1.12% 1.23%
D 7051 6417 4264 4264 60.47% 66.45%

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 15 32 3532682 23610.22 611 596 149.6
A 3 14 179595 1196.52 611 596 149.6
A 4 3 40814 268.84 611 596 149.6
B 5 185 95349 628.96 692 666 150.5
B 0 182 36092 235.33 692 666 150.5
B 12 111 18230 116.67 692 666 150.5
C 12 252 276225 1481.24 684 678 186.0
C 1 16 115559 617.56 684 678 186.0
C 6 223 110202 588.76 684 678 186.0
D 15 94 11346604 87210.81 452 432 130.1
D 2 249 269275 2066.43 452 432 130.1
D 3 12 126791 971.24 452 432 130.1

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