ASTROSAT CZTI

Data Quality Report

Orbit 12047

Creation date: 2024-06-27T16:21:42.535062
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/AS1A03_085T02_9000001784_12047cztM0_level2.evt modeM0/AS1A03_085T02_9000001784_12047cztM0_level2_quad_clean.evt
Size (bytes)664,326,720113,880,960
Size633.6 MB 108.6 MB
Events in quadrant A4,393,940729,156
Events in quadrant B6,251,231713,268
Events in quadrant C3,899,876718,815
Events in quadrant D4,995,529694,195

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187773
B0243872
C0175892
D0205422

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85451431.673493%
B85454595.371562%
C8545640.748976%
D85451351.579871%

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 9121 8549 29 29 0.32% 0.34%
B 9121 8548 164 164 1.80% 1.92%
C 9121 8548 1 1 0.01% 0.01%
D 9121 8548 75 75 0.82% 0.88%

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 1 162 127016 595.98 1027 1004 211.4
A 5 16 108283 507.38 1027 1004 211.4
A 1 178 56937 264.54 1027 1004 211.4
B 4 239 1258345 6409.14 1016 991 196.2
B 4 206 293461 1490.81 1016 991 196.2
B 15 204 246571 1251.8 1016 991 196.2
C 14 234 7982 29.75 997 998 234.8
C 13 61 7154 26.22 997 998 234.8
C 8 128 4211 13.69 997 998 234.8
D 1 52 687820 2879.23 991 963 238.6
D 8 195 342979 1433.69 991 963 238.6
D 13 104 102517 425.7 991 963 238.6

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