ASTROSAT CZTI

Data Quality Report

Orbit 56280

Creation date: 2026-02-23T22:23:47.778541
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_049T01_9000006552_56280cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56280cztM0_level2_quad_clean.evt
Size (bytes)728,648,64093,689,280
Size694.9 MB 89.3 MB
Events in quadrant A12,157,339410,218
Events in quadrant B3,866,048712,823
Events in quadrant C4,386,076632,768
Events in quadrant D6,002,143577,023

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0412390
B0167600
C0181760
D0229672

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7236305242.177999%
B72361371.893311%
C72361712.363184%
D72353985.501037%

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 7236 7236 3120 3120 43.12% 43.12%
B 7236 7236 105 105 1.45% 1.45%
C 7236 7236 175 175 2.42% 2.42%
D 7235 7235 442 442 6.11% 6.11%

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 8 176 5437492 32950.23 644 627 165.0
A 15 32 2405269 14573.38 644 627 165.0
A 3 14 867952 5256.44 644 627 165.0
B 5 185 270043 1700.59 747 722 158.4
B 0 231 140643 883.51 747 722 158.4
B 0 171 63119 394.0 747 722 158.4
C 12 254 465389 2320.65 724 720 200.2
C 12 252 297299 1481.17 724 720 200.2
C 5 250 260891 1299.34 724 720 200.2
D 2 249 772481 3780.88 711 681 204.1
D 7 77 726060 3553.47 711 681 204.1
D 11 129 420183 2055.05 711 681 204.1

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