ASTROSAT CZTI

Data Quality Report

Orbit 56472

Creation date: 2026-03-07T00:47:16.639227
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_060T01_9000006556_56472cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56472cztM0_level2_quad_clean.evt
Size (bytes)1,722,208,320235,103,040
Size1.6 GB 224.2 MB
Events in quadrant A23,590,4531,203,905
Events in quadrant B9,502,6601,783,707
Events in quadrant C13,604,0061,499,607
Events in quadrant D15,627,7811,358,067

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0829284
B0415484
C0535465
D0588264

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18453528428.634910%
B184535983.240665%
C1845216018.676566%
D1845218109.809235%

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 19838 18456 4202 4202 21.18% 22.77%
B 19838 18457 260 260 1.31% 1.41%
C 19837 18456 1118 1118 5.64% 6.06%
D 19837 18455 1505 1505 7.59% 8.15%

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 7 64 10241989 23281.73 1751 1705 439.8
A 4 95 1403242 3186.46 1751 1705 439.8
A 4 206 1191707 2705.52 1751 1705 439.8
B 5 172 648147 1555.7 1953 1876 415.4
B 0 231 186633 444.75 1953 1876 415.4
B 0 63 142324 338.08 1953 1876 415.4
C 15 230 3437597 6695.27 1856 1840 513.2
C 12 252 1230576 2394.44 1856 1840 513.2
C 13 3 641914 1247.31 1856 1840 513.2
D 12 33 4029047 7832.14 1842 1762 514.2
D 2 249 1491578 2897.35 1842 1762 514.2
D 5 113 453329 878.19 1842 1762 514.2

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