ASTROSAT CZTI

Data Quality Report

Orbit 51329

Creation date: 2025-04-02T11:04:07.680551
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/AS1C07_001T03_9000006456_51329cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51329cztM0_level2_quad_clean.evt
Size (bytes)2,003,063,040243,627,840
Size1.9 GB 232.3 MB
Events in quadrant A20,959,0731,533,146
Events in quadrant B14,386,1391,769,826
Events in quadrant C15,952,3671,533,770
Events in quadrant D21,375,4051,219,131

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03880
B03880
C03880
D03880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0758213
B0560593
C0608123
D0769283

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19145210510.995038%
B1914514357.495430%
C1914618459.636478%
D19146377019.690797%

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 19835 19146 1427 1427 7.19% 7.45%
B 19835 19145 777 777 3.92% 4.06%
C 19836 19148 1430 1430 7.21% 7.47%
D 19836 19146 3539 3539 17.84% 18.48%

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 12 3 6313720 13171.49 1935 1881 479.2
A 12 250 2959638 6172.22 1935 1881 479.2
A 9 160 1025773 2136.65 1935 1881 479.2
B 10 254 2005079 4844.11 1946 1875 413.5
B 12 32 1888884 4563.13 1946 1875 413.5
B 5 185 734318 1771.18 1946 1875 413.5
C 15 205 4025404 7711.09 1896 1878 521.8
C 12 112 804400 1538.03 1896 1878 521.8
C 13 3 713426 1363.68 1896 1878 521.8
D 11 176 4307656 8756.06 1766 1703 491.8
D 3 12 3248399 6602.09 1766 1703 491.8
D 7 60 2719191 5525.95 1766 1703 491.8

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