ASTROSAT CZTI

Data Quality Report

Orbit 48471

Creation date: 2024-09-14T05:29:15.666033
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/AS1A13_029T01_9000006426_48471cztM0_level2.fits modeM0/AS1A13_029T01_9000006426_48471cztM0_level2_quad_clean.evt
Size (bytes)754,413,120175,916,160
Size719.5 MB 167.8 MB
Events in quadrant A11,372,4361,157,009
Events in quadrant B5,520,1281,197,325
Events in quadrant C4,784,5101,150,611
Events in quadrant D5,378,0011,043,066

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04121412
B02459915
C0229457
D02480515

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02280
B02280
C02280
D02280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A112474233.761003%
B112451681.493997%
C11248590.524538%
D112451481.316141%

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 12810 11251 149 149 1.16% 1.32%
B 12810 11251 49 49 0.38% 0.44%
C 12810 11251 8 8 0.06% 0.07%
D 12810 11251 97 97 0.76% 0.86%

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 10 83 6592273 26182.35 1205 1178 251.7
A 9 143 106902 419.97 1205 1178 251.7
A 13 254 21554 80.94 1205 1178 251.7
B 12 16 540191 2248.16 1211 1175 239.8
B 8 234 70596 289.55 1211 1175 239.8
B 0 197 42093 170.66 1211 1175 239.8
C 1 3 47001 161.84 1199 1209 282.9
C 14 254 36205 123.69 1199 1209 282.9
C 14 67 9879 30.64 1199 1209 282.9
D 2 120 289873 965.98 1188 1151 298.9
D 2 249 132916 440.85 1188 1151 298.9
D 10 199 91464 302.16 1188 1151 298.9

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