ASTROSAT CZTI

Data Quality Report

Orbit 54695

Creation date: 2025-11-10T14:14:39.188785
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_066T07_9000006522_54695cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54695cztM0_level2_quad_clean.evt
Size (bytes)747,480,96098,979,840
Size712.9 MB 94.4 MB
Events in quadrant A5,252,411656,497
Events in quadrant B7,436,540685,059
Events in quadrant C4,355,015615,206
Events in quadrant D9,977,893458,984

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218260
B0278080
C0191440
D0355240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83554134.943148%
B835690710.854476%
C83561411.687410%
D8356196723.539971%

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 8630 8630 294 294 3.41% 3.41%
B 8631 8631 671 671 7.77% 7.77%
C 8631 8628 98 98 1.14% 1.14%
D 8631 8585 1726 1726 20.00% 20.10%

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 7 190 814259 3662.19 893 870 222.1
A 7 14 501268 2252.98 893 870 222.1
A 11 3 341806 1535.02 893 870 222.1
B 2 249 3701078 19849.51 869 837 186.4
B 0 213 114394 609.16 869 837 186.4
B 7 0 68914 365.19 869 837 186.4
C 12 249 266525 1100.32 876 871 241.4
C 6 223 144165 593.52 876 871 241.4
C 15 157 139859 575.68 876 871 241.4
D 11 129 5545364 24575.63 782 748 225.6
D 11 176 593770 2628.47 782 748 225.6
D 15 94 249334 1101.82 782 748 225.6

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