ASTROSAT CZTI

Data Quality Report

Orbit 56342

Creation date: 2026-02-26T05:18:43.739036
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_56342cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56342cztM0_level2_quad_clean.evt
Size (bytes)739,506,24087,148,800
Size705.2 MB 83.1 MB
Events in quadrant A5,905,429585,915
Events in quadrant B3,790,730664,959
Events in quadrant C6,243,809547,434
Events in quadrant D10,907,707366,259

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223382
B0161922
C0233772
D0370582

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67995958.751287%
B67992273.338726%
C679983412.266510%
D6799269139.579350%

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 7649 6800 616 616 8.05% 9.06%
B 7649 6800 130 130 1.70% 1.91%
C 7649 6800 666 666 8.71% 9.79%
D 7649 6799 2518 2518 32.92% 37.03%

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 95 2092834 12006.71 694 677 174.2
A 1 191 312238 1788.02 694 677 174.2
A 3 78 143984 822.43 694 677 174.2
B 5 185 495060 3300.19 703 678 149.8
B 0 231 89601 593.6 703 678 149.8
B 0 171 88499 586.24 703 678 149.8
C 5 250 1398314 7794.5 652 647 179.3
C 12 254 981993 5472.77 652 647 179.3
C 15 230 507679 2827.61 652 647 179.3
D 8 129 7298102 46291.35 545 520 157.6
D 6 239 980694 6217.62 545 520 157.6
D 2 249 116907 738.29 545 520 157.6

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