ASTROSAT CZTI

Data Quality Report

Orbit 04231

Creation date: 2024-06-27T14:39:06.642092
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/AS1G05_240T01_9000000536_04231cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04231cztM0_level2_quad_clean.evt
Size (bytes)598,092,48075,818,880
Size570.4 MB 72.3 MB
Events in quadrant A4,664,781442,118
Events in quadrant B4,532,140447,143
Events in quadrant C3,764,892434,176
Events in quadrant D4,613,351420,769

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01943336
B01895854
C01668324
D01920242

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79424085.137245%
B79363664.611895%
C79451581.988672%
D79422393.009318%

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 8316 7959 177 177 2.13% 2.22%
B 8316 7959 65 65 0.78% 0.82%
C 8316 7959 11 11 0.13% 0.14%
D 8316 7959 67 67 0.81% 0.84%

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 0 50 985159 5119.32 931 909 192.3
A 15 234 80249 412.67 931 909 192.3
A 12 194 9644 45.43 931 909 192.3
B 14 167 336404 1821.56 943 920 184.2
B 3 0 231947 1254.39 943 920 184.2
B 15 204 219580 1187.25 943 920 184.2
C 9 144 94890 440.91 913 915 213.1
C 10 65 73116 338.75 913 915 213.1
C 8 128 12790 55.71 913 915 213.1
D 11 132 660063 2972.92 905 874 221.7
D 13 239 160373 719.34 905 874 221.7
D 2 232 101397 453.36 905 874 221.7

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