ASTROSAT CZTI

Data Quality Report

Orbit 52638

Creation date: 2025-06-23T20:29:15.763774
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_011T06_9000006478_52638cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52638cztM0_level2_quad_clean.evt
Size (bytes)631,419,84090,676,800
Size602.2 MB 86.5 MB
Events in quadrant A3,930,983613,836
Events in quadrant B4,708,881644,200
Events in quadrant C6,875,837536,441
Events in quadrant D7,346,942490,284

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161721
B0184921
C0249881
D0264101

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65951932.926459%
B65962263.426319%
C659678211.855670%
D6596107016.221953%

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 7520 6595 103 103 1.37% 1.56%
B 7521 6597 114 114 1.52% 1.73%
C 7521 6597 721 721 9.59% 10.93%
D 7521 6597 908 908 12.07% 13.76%

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 7 206 337331 1960.89 684 666 171.7
A 3 46 200823 1165.8 684 666 171.7
A 8 246 100357 580.64 684 666 171.7
B 10 128 941559 6620.91 673 651 142.1
B 10 254 355947 2500.12 673 651 142.1
B 5 185 195272 1369.49 673 651 142.1
C 15 248 3196954 17952.99 642 635 178.0
C 13 3 409612 2297.13 642 635 178.0
C 15 157 152000 850.18 642 635 178.0
D 8 176 2868091 15572.55 631 600 184.1
D 6 42 651554 3535.15 631 600 184.1
D 2 62 188887 1022.53 631 600 184.1

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