ASTROSAT CZTI

Data Quality Report

Orbit 57427

Creation date: 2026-05-10T04:45:24.339853
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_102T01_9000006572_57427cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57427cztM0_level2_quad_clean.evt
Size (bytes)651,867,84096,727,680
Size621.7 MB 92.2 MB
Events in quadrant A5,315,567651,890
Events in quadrant B3,909,681668,655
Events in quadrant C7,406,189529,300
Events in quadrant D6,891,006533,640

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211941
B0173601
C0275931
D0259981

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78382513.202348%
B78381081.377903%
C7838112814.391426%
D78387789.926002%

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 8120 8120 171 171 2.11% 2.11%
B 8120 8120 45 45 0.55% 0.55%
C 8120 8120 1028 1028 12.66% 12.66%
D 8120 8120 742 742 9.14% 9.14%

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 1515519 7317.86 841 819 207.0
A 10 251 203019 976.87 841 819 207.0
A 8 4 146789 705.21 841 819 207.0
B 0 216 197269 1093.87 835 803 179.6
B 5 185 127918 707.74 835 803 179.6
B 10 247 73962 407.33 835 803 179.6
C 15 224 3763193 18286.14 758 750 205.8
C 14 254 423477 2054.53 758 750 205.8
C 6 223 158803 768.17 758 750 205.8
D 2 249 1339470 6078.08 786 751 220.3
D 13 154 614554 2786.8 786 751 220.3
D 15 142 493243 2236.02 786 751 220.3

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