ASTROSAT CZTI

Data Quality Report

Orbit 58851

Creation date: 2026-08-14T12:28:18.370058
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_106T01_9000006596_58851cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58851cztM0_level2_quad_clean.evt
Size (bytes)697,783,68090,000,000
Size665.5 MB 85.8 MB
Events in quadrant A12,080,182257,982
Events in quadrant B5,997,969699,963
Events in quadrant C3,409,632658,103
Events in quadrant D3,792,974616,963

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0407650
B0225421
C0152790
D0161850

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7061462165.443988%
B70605798.201133%
C7060360.509915%
D7060630.892351%

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 7060 7060 2873 2873 40.69% 40.69%
B 7060 7060 471 471 6.67% 6.67%
C 7060 7060 26 26 0.37% 0.37%
D 7060 7060 57 57 0.81% 0.81%

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 6703654 63206.16 420 409 106.1
A 14 238 2147016 20240.76 420 409 106.1
A 15 233 746363 7033.74 420 409 106.1
B 5 172 2179479 13182.32 769 741 165.3
B 4 201 163228 983.12 769 741 165.3
B 2 249 161877 974.94 769 741 165.3
C 3 233 151113 710.21 767 759 211.7
C 12 252 53036 246.94 767 759 211.7
C 15 165 33656 155.39 767 759 211.7
D 15 238 205499 934.97 768 733 219.0
D 6 239 132644 602.31 768 733 219.0
D 9 102 93086 421.69 768 733 219.0

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

TCT plots

Parameter TCT0 TCT_healed
Tct