ASTROSAT CZTI

Data Quality Report

Orbit 35705

Creation date: 2022-05-06T16:14:34.508397
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/AS1A09_029T01_9000005116_35705cztM0_level2.evt modeM0/AS1A09_029T01_9000005116_35705cztM0_level2_quad_clean.evt
Size (bytes)88,568,64018,745,920
Size84.5 MB 17.9 MB
Events in quadrant A533,818126,321
Events in quadrant B698,971125,715
Events in quadrant C669,591124,702
Events in quadrant D710,575115,186

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021492
B026491
C025391
D026901

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A97360.616650%
B973737.502569%
C973464.727646%
D973858.735868%

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 973 973 0 0 0.00% 0.00%
B 973 973 48 48 4.93% 4.93%
C 973 973 31 31 3.19% 3.19%
D 973 973 71 71 7.30% 7.30%

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 10 83 52179 1921.18 124 121 27.1
A 10 67 1812 62.41 124 121 27.1
A 3 137 1311 43.92 124 121 27.1
B 5 172 227153 8943.49 118 114 25.4
B 5 255 4187 160.44 118 114 25.4
B 11 111 2880 108.96 118 114 25.4
C 0 10 147738 4945.32 119 119 29.9
C 15 214 46028 1537.98 119 119 29.9
C 15 208 4956 162.04 119 119 29.9
D 12 6 183842 6098.51 117 113 30.1
D 13 249 51163 1694.5 117 113 30.1
D 2 153 12143 399.31 117 113 30.1

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