ASTROSAT CZTI

Data Quality Report

Orbit 52302

Creation date: 2025-07-22T14:37:58.257865
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_011T05_9000006474_52302cztM0_level2.fits modeM0/AS1C09_011T05_9000006474_52302cztM0_level2_quad_clean.evt
Size (bytes)1,320,171,840107,242,560
Size1.2 GB 102.3 MB
Events in quadrant A5,679,738875,829
Events in quadrant B12,507,606701,643
Events in quadrant C18,874,250284,937
Events in quadrant D11,051,761705,793

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242532
B0440732
C0628062
D0396832

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01980
B01980
C01980
D01980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A97783924.009000%
B9778306731.366333%
C9778674769.001841%
D9778166417.017795%

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 9873 9780 248 248 2.51% 2.54%
B 9873 9780 2208 2208 22.36% 22.58%
C 9872 9777 5572 5572 56.44% 56.99%
D 9872 9778 1480 1480 14.99% 15.14%

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 12 3 441212 1768.16 983 959 249.0
A 4 249 413222 1655.75 983 959 249.0
A 5 240 144763 577.55 983 959 249.0
B 12 32 6442366 35059.83 867 839 183.7
B 4 171 1057685 5752.18 867 839 183.7
B 0 216 798952 4343.96 867 839 183.7
C 15 178 9450619 70493.14 478 473 134.1
C 0 161 5045551 37633.64 478 473 134.1
C 15 224 982325 7324.1 478 473 134.1
D 6 42 4192822 15982.29 915 876 262.3
D 8 176 542461 2064.86 915 876 262.3
D 7 60 395472 1504.44 915 876 262.3

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