ASTROSAT CZTI

Data Quality Report

Orbit 10954

Creation date: 2024-06-27T16:06:11.232039
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/AS1T01_193T01_9000001590_10954cztM0_level2.evt modeM0/AS1T01_193T01_9000001590_10954cztM0_level2_quad_clean.evt
Size (bytes)117,192,96032,267,520
Size111.8 MB 30.8 MB
Events in quadrant A934,303217,826
Events in quadrant B817,351221,841
Events in quadrant C695,998220,443
Events in quadrant D1,000,146208,913

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A038012
B033451
C029951
D039081

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1456140.961538%
B1456392.678571%
C145630.206044%
D1456422.884615%

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 1456 1456 2 2 0.14% 0.14%
B 1456 1456 15 15 1.03% 1.03%
C 1456 1456 0 0 0.00% 0.00%
D 1456 1456 30 30 2.06% 2.06%

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 8 15 146754 3708.32 185 182 39.5
A 8 5 65025 1640.55 185 182 39.5
A 11 29 6514 160.2 185 182 39.5
B 4 239 91318 2475.5 186 183 36.8
B 12 111 3788 97.92 186 183 36.8
B 11 111 2882 73.31 186 183 36.8
C 12 4 1482 30.84 177 179 42.3
C 13 61 1319 26.98 177 179 42.3
C 5 207 842 15.69 177 179 42.3
D 1 52 240147 5581.53 174 170 43.0
D 8 195 33034 764.37 174 170 43.0
D 13 104 29717 687.22 174 170 43.0

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