ASTROSAT CZTI

Data Quality Report

Orbit 57079

Creation date: 2026-04-17T14:27:37.663113
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_083T10_9000006566_57079cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57079cztM0_level2_quad_clean.evt
Size (bytes)593,271,36096,612,480
Size565.8 MB 92.1 MB
Events in quadrant A3,372,596668,005
Events in quadrant B3,467,709719,562
Events in quadrant C4,707,737618,811
Events in quadrant D9,863,813426,378

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152860
B0153720
C0188090
D0342650

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7066480.679309%
B7067460.650913%
C70673945.575209%
D7067242934.371020%

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 7065 7065 31 31 0.44% 0.44%
B 7067 7067 33 33 0.47% 0.47%
C 7067 7067 512 512 7.24% 7.24%
D 7067 7067 1750 1750 24.76% 24.76%

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 4 13 182527 969.83 762 741 187.4
A 3 14 154031 817.8 762 741 187.4
A 13 248 40296 211.03 762 741 187.4
B 4 171 381891 2351.87 750 721 162.1
B 0 213 32182 194.12 750 721 162.1
B 0 173 26307 157.87 750 721 162.1
C 1 16 1055271 5299.43 732 725 199.0
C 12 252 203597 1019.5 732 725 199.0
C 14 245 173657 869.04 732 725 199.0
D 12 33 6347824 35555.18 626 597 178.5
D 15 142 522360 2922.75 626 597 178.5
D 2 249 264717 1479.52 626 597 178.5

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