ASTROSAT CZTI

Data Quality Report

Orbit 53489

Creation date: 2025-08-18T05:11:57.995027
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_002T07_9000006498_53489cztM0_level2.fits modeM0/AS1A14_002T07_9000006498_53489cztM0_level2_quad_clean.evt
Size (bytes)1,186,107,84085,800,960
Size1.1 GB 81.8 MB
Events in quadrant A12,173,079513,372
Events in quadrant B9,106,169704,456
Events in quadrant C17,985,622159,970
Events in quadrant D4,036,433674,663

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0416812
B0324911
C0588161
D0177681

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7833289436.946253%
B7833163020.809396%
C7833635181.080046%
D78331311.672412%

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 7832 7832 2648 2648 33.81% 33.81%
B 7833 7833 1341 1341 17.12% 17.12%
C 7833 7833 6239 6239 79.65% 79.65%
D 7833 7833 96 96 1.23% 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 3 63 6595238 36303.95 738 719 181.6
A 15 174 1236115 6801.06 738 719 181.6
A 3 62 771988 4245.97 738 719 181.6
B 2 249 3594473 20942.65 803 774 171.6
B 10 254 1381903 8048.67 803 774 171.6
B 10 28 235711 1369.12 803 774 171.6
C 7 64 13591274 114486.6 426 422 118.7
C 15 224 1476689 12435.78 426 422 118.7
C 1 241 404686 3405.44 426 422 118.7
D 3 12 249169 1035.89 840 801 239.8
D 13 153 125549 520.3 840 801 239.8
D 7 70 82565 341.02 840 801 239.8

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