ASTROSAT CZTI

Data Quality Report

Orbit 52622

Creation date: 2025-06-24T12:36:31.011544
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/AS1C09_011T06_9000006478_52622cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52622cztM0_level2_quad_clean.evt
Size (bytes)2,946,974,400191,900,160
Size2.7 GB 183.0 MB
Events in quadrant A11,937,2051,551,166
Events in quadrant B21,708,2741,684,293
Events in quadrant C45,708,821235,851
Events in quadrant D28,300,8441,051,193

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0484044
B0776744
C01483334
D0970079

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1866113417.186110%
B18661193710.379937%
C186621641787.970207%
D18661608432.602754%

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 19996 18666 986 986 4.93% 5.28%
B 19996 18666 1024 1024 5.12% 5.49%
C 19996 18662 14727 14727 73.65% 78.91%
D 19996 18666 5550 5550 27.76% 29.73%

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 3 110 2378541 4985.48 1886 1839 476.7
A 3 46 537089 1122.76 1886 1839 476.7
A 3 14 269445 561.34 1886 1839 476.7
B 10 254 11128850 28081.47 1867 1803 396.2
B 10 128 693662 1746.05 1867 1803 396.2
B 8 234 615266 1548.2 1867 1803 396.2
C 15 248 41929349 203308.36 741 734 206.2
C 12 254 189117 913.45 741 734 206.2
C 15 147 148240 715.24 741 734 206.2
D 6 42 6637404 14005.54 1645 1565 473.8
D 2 62 3970725 8377.27 1645 1565 473.8
D 12 17 3352141 7071.69 1645 1565 473.8

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