ASTROSAT CZTI

Data Quality Report

Orbit 53392

Creation date: 2025-08-11T17:19:47.042638
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_011T09_9000006494_53392cztM0_level2.fits modeM0/AS1C09_011T09_9000006494_53392cztM0_level2_quad_clean.evt
Size (bytes)2,269,359,360207,501,120
Size2.1 GB 197.9 MB
Events in quadrant A11,118,6361,585,995
Events in quadrant B18,672,2731,504,818
Events in quadrant C40,090,960460,202
Events in quadrant D12,734,0961,489,055

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03680
B03680
C03680
D03680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460473
B0678933
C01312833
D0506514

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A180039355.193579%
B18003315517.524857%
C180031333274.054324%
D180036103.388324%

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 19563 18006 648 648 3.31% 3.60%
B 19563 18006 2021 2021 10.33% 11.22%
C 19563 18005 12583 12583 64.32% 69.89%
D 19563 18006 514 514 2.63% 2.85%

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 63 1820667 3953.13 1857 1811 460.1
A 15 174 922422 2000.87 1857 1811 460.1
A 3 27 232939 502.34 1857 1811 460.1
B 2 249 6209051 16823.21 1745 1687 369.0
B 4 206 2459255 6660.5 1745 1687 369.0
B 4 171 1406812 3808.17 1745 1687 369.0
C 1 241 20707129 77107.58 975 965 268.5
C 15 178 10847689 40392.06 975 965 268.5
C 15 224 3175312 11820.93 975 965 268.5
D 0 18 2377808 4634.55 1819 1737 512.7
D 3 12 668548 1300.62 1819 1737 512.7
D 2 249 620242 1206.4 1819 1737 512.7

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