ASTROSAT CZTI

Data Quality Report

Orbit 53247

Creation date: 2025-08-01T22:19:58.914975
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_011T08_9000006492_53247cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53247cztM0_level2_quad_clean.evt
Size (bytes)1,317,502,080138,821,760
Size1.2 GB 132.4 MB
Events in quadrant A11,129,588863,951
Events in quadrant B8,170,9551,116,602
Events in quadrant C20,494,299512,891
Events in quadrant D8,097,838923,358

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0407782
B0320192
C0687112
D0318553

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02300
B02300
C02300
D02300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11359237420.899727%
B113602802.464789%
C11360592552.156690%
D113595795.097280%

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 12724 11361 1920 1920 15.09% 16.90%
B 12725 11362 159 159 1.25% 1.40%
C 12725 11360 5376 5376 42.25% 47.32%
D 12724 11361 467 467 3.67% 4.11%

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 8 230 4458551 17281.14 1036 1011 257.9
A 3 62 1011909 3919.08 1036 1011 257.9
A 0 8 513097 1985.27 1036 1011 257.9
B 12 33 1631332 6633.31 1164 1126 245.8
B 2 249 570348 2316.16 1164 1126 245.8
B 4 170 387655 1572.79 1164 1126 245.8
C 15 165 12453706 53033.69 851 842 234.8
C 4 5 1757021 7479.14 851 842 234.8
C 15 224 925267 3936.9 851 842 234.8
D 2 37 1145662 3542.94 1139 1090 323.1
D 0 18 472860 1460.33 1139 1090 323.1
D 2 120 345468 1066.0 1139 1090 323.1

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