ASTROSAT CZTI

Data Quality Report

Orbit 54110

Creation date: 2025-09-28T23:34:38.224071
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/AS1A14_012T01_9000006512_54110cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54110cztM0_level2_quad_clean.evt
Size (bytes)424,517,76092,154,240
Size404.9 MB 87.9 MB
Events in quadrant A3,238,055604,413
Events in quadrant B4,150,390648,173
Events in quadrant C3,743,027563,694
Events in quadrant D4,102,429543,366

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140931
B0166401
C0156681
D0165171

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61771883.043549%
B61772393.869192%
C61773695.973774%
D61771592.574065%

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 7312 6178 106 106 1.45% 1.72%
B 7312 6178 103 103 1.41% 1.67%
C 7312 6178 293 293 4.01% 4.74%
D 7312 6178 76 76 1.04% 1.23%

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 15 174 234125 1427.54 657 641 163.6
A 4 249 160373 976.62 657 641 163.6
A 5 243 113982 692.98 657 641 163.6
B 0 213 402250 2932.99 650 627 136.9
B 15 20 224318 1633.58 650 627 136.9
B 14 167 223600 1628.34 650 627 136.9
C 1 241 557194 3190.9 635 629 174.4
C 13 3 514343 2945.22 635 629 174.4
C 15 233 42745 241.46 635 629 174.4
D 2 172 541202 2944.73 644 615 183.6
D 8 176 350747 1907.27 644 615 183.6
D 2 165 187615 1018.64 644 615 183.6

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