ASTROSAT CZTI

Data Quality Report

Orbit 54041

Creation date: 2025-09-26T11:29:09.747509
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_041T01_9000006510_54041cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54041cztM0_level2_quad_clean.evt
Size (bytes)825,491,520104,088,960
Size787.3 MB 99.3 MB
Events in quadrant A4,818,477749,858
Events in quadrant B4,603,088837,308
Events in quadrant C5,064,798725,884
Events in quadrant D15,428,147263,098

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205991
B0198831
C0212811
D0516651

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82774335.231364%
B82782733.297898%
C82783574.312636%
D8278517262.478860%

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 8802 8278 292 292 3.32% 3.53%
B 8803 8279 112 112 1.27% 1.35%
C 8803 8279 271 271 3.08% 3.27%
D 8803 8278 4679 4679 53.15% 56.52%

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 843996 4014.89 853 832 210.0
A 0 8 447338 2126.13 853 832 210.0
A 13 248 93688 442.15 853 832 210.0
B 5 185 353768 1929.88 870 841 182.9
B 5 236 250811 1366.89 870 841 182.9
B 7 252 178801 973.13 870 841 182.9
C 15 147 846186 3632.13 853 844 232.7
C 13 3 454002 1947.06 853 844 232.7
C 12 252 97803 416.6 853 844 232.7
D 8 176 11146553 81995.91 475 453 135.9
D 7 70 1411944 10383.59 475 453 135.9
D 2 165 205455 1508.09 475 453 135.9

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