ASTROSAT CZTI

Data Quality Report

Orbit 51300

Creation date: 2025-03-23T19:54:04.160113
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/AS1C07_001T03_9000006456_51300cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51300cztM0_level2_quad_clean.evt
Size (bytes)2,460,703,680224,012,160
Size2.3 GB 213.6 MB
Events in quadrant A15,389,0441,616,138
Events in quadrant B19,637,1451,669,090
Events in quadrant C34,676,023787,967
Events in quadrant D19,903,3121,381,509

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03900
B03900
C03900
D03900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0589262
B0716452
C01163442
D0724422

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1925216338.482236%
B19253277714.423726%
C192531092756.754791%
D19253253013.140809%

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 20012 19255 998 998 4.99% 5.18%
B 20013 19256 1718 1718 8.58% 8.92%
C 20013 19254 8756 8756 43.75% 45.48%
D 20013 19256 2095 2095 10.47% 10.88%

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 12 250 3047237 6236.58 1978 1927 488.3
A 12 3 1565071 3201.21 1978 1927 488.3
A 9 191 465276 948.91 1978 1927 488.3
B 10 254 7157138 17402.38 1946 1876 411.2
B 6 36 1292222 3138.26 1946 1876 411.2
B 5 185 866138 2101.98 1946 1876 411.2
C 15 198 11161681 31704.28 1277 1269 352.0
C 4 12 10017716 28454.53 1277 1269 352.0
C 15 179 2935082 8334.32 1277 1269 352.0
D 8 176 4492300 8577.5 1860 1794 523.5
D 7 60 4040221 7713.97 1860 1794 523.5
D 10 181 604834 1151.89 1860 1794 523.5

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