ASTROSAT CZTI

Data Quality Report

Orbit 23887

Creation date: 2024-06-27T18:59:48.254402
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/AS1A07_142T01_9000003540_23887cztM0_level2.evt modeM0/AS1A07_142T01_9000003540_23887cztM0_level2_quad_clean.evt
Size (bytes)527,788,80098,539,200
Size503.3 MB 94.0 MB
Events in quadrant A3,501,866634,813
Events in quadrant B3,675,930641,134
Events in quadrant C4,333,445599,128
Events in quadrant D3,976,181599,670

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150382
B0154752
C0174952
D0166262

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7318170.232304%
B7318580.792566%
C73173104.236709%
D7317520.710674%

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 7733 7319 0 0 0.00% 0.00%
B 7733 7319 3 3 0.04% 0.04%
C 7732 7318 134 134 1.73% 1.83%
D 7732 7318 19 19 0.25% 0.26%

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 13 254 13581 68.75 907 885 184.7
A 3 137 7796 37.42 907 885 184.7
A 0 226 7733 37.08 907 885 184.7
B 15 33 40202 228.11 907 887 172.4
B 0 197 28967 162.92 907 887 172.4
B 12 111 20444 113.47 907 887 172.4
C 0 10 854335 4273.83 856 860 199.7
C 14 238 135489 674.16 856 860 199.7
C 7 247 7017 30.83 856 860 199.7
D 8 195 351874 1636.69 877 851 214.5
D 1 52 190159 882.67 877 851 214.5
D 13 174 41890 191.35 877 851 214.5

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