ASTROSAT CZTI

Data Quality Report

Orbit 13948

Creation date: 2024-06-27T16:48:19.593126
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/AS1A04_026T04_9000002060_13948cztM0_level2.evt modeM0/AS1A04_026T04_9000002060_13948cztM0_level2_quad_clean.evt
Size (bytes)748,195,200163,984,320
Size713.5 MB 156.4 MB
Events in quadrant A4,195,3521,104,407
Events in quadrant B4,515,5101,110,621
Events in quadrant C4,270,5941,110,068
Events in quadrant D9,080,6841,028,769

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182513
B0191502
C0183192
D0329712

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A88321161.313406%
B88321061.200181%
C8832760.860507%
D88328099.159873%

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 10648 8835 1 1 0.01% 0.01%
B 10648 8835 8 8 0.08% 0.09%
C 10648 8835 9 9 0.08% 0.10%
D 10648 8835 886 886 8.32% 10.03%

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 1 162 48578 225.34 1044 1018 211.1
A 8 15 44087 204.06 1044 1018 211.1
A 15 157 22468 101.63 1044 1018 211.1
B 0 189 254989 1283.07 1040 1013 197.9
B 3 209 61113 303.62 1040 1013 197.9
B 3 64 28226 137.48 1040 1013 197.9
C 3 233 224963 956.21 1018 1022 234.2
C 0 207 45293 189.03 1018 1022 234.2
C 14 234 13369 52.72 1018 1022 234.2
D 13 122 4348297 16590.38 992 969 262.0
D 12 110 280199 1065.6 992 969 262.0
D 1 52 191948 728.82 992 969 262.0

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