ASTROSAT CZTI

Data Quality Report

Orbit 20646

Creation date: 2024-06-27T18:17:49.877714
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/AS1A05_082T09_9000003054_20646cztM0_level2.evt modeM0/AS1A05_082T09_9000003054_20646cztM0_level2_quad_clean.evt
Size (bytes)599,175,36095,299,200
Size571.4 MB 90.9 MB
Events in quadrant A4,439,801589,889
Events in quadrant B4,534,652590,676
Events in quadrant C3,995,269573,506
Events in quadrant D4,618,533560,032

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186879
B01874015
C01711815
D0190934

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82112763.361345%
B82113023.677993%
C82091702.070898%
D82141782.167032%

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 8909 8216 85 85 0.95% 1.03%
B 8910 8217 51 51 0.57% 0.62%
C 8910 8217 1 1 0.01% 0.01%
D 8910 8217 65 65 0.73% 0.79%

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 5 16 510445 2487.25 1009 987 204.8
A 12 16 41438 197.49 1009 987 204.8
A 12 194 14389 65.43 1009 987 204.8
B 7 220 206142 1052.64 1008 984 194.9
B 0 244 163768 835.22 1008 984 194.9
B 0 197 55982 282.19 1008 984 194.9
C 14 238 149348 635.47 975 980 233.5
C 3 9 23774 97.63 975 980 233.5
C 7 247 8923 34.02 975 980 233.5
D 1 20 291696 1201.75 979 948 241.9
D 1 52 274176 1129.33 979 948 241.9
D 13 153 152495 626.39 979 948 241.9

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