ASTROSAT CZTI

Data Quality Report

Orbit 20152

Creation date: 2024-06-27T18:11:52.843147
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_180T01_9000002992_20152cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20152cztM0_level2_quad_clean.evt
Size (bytes)611,386,56097,430,400
Size583.1 MB 92.9 MB
Events in quadrant A3,799,330650,245
Events in quadrant B3,890,596642,820
Events in quadrant C3,797,416615,676
Events in quadrant D6,537,209537,540

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156462
B0159902
C0154542
D0241912

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72312533.498825%
B72322763.816372%
C72322623.622788%
D7232179024.751106%

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 8636 7233 28 28 0.32% 0.39%
B 8637 7234 38 38 0.44% 0.53%
C 8637 7234 0 0 0.00% 0.00%
D 8637 7234 385 385 4.46% 5.32%

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 14 238 196592 1039.32 936 920 188.3
A 0 226 7859 36.86 936 920 188.3
A 3 137 7659 35.79 936 920 188.3
B 4 80 142532 797.49 923 901 177.6
B 7 220 53327 295.2 923 901 177.6
B 0 183 35901 197.08 923 901 177.6
C 3 233 199170 960.23 886 893 206.5
C 14 238 141679 681.81 886 893 206.5
C 13 61 5997 24.72 886 893 206.5
D 1 52 3273508 16586.49 813 789 197.3
D 7 96 50862 253.78 813 789 197.3
D 7 238 33404 165.3 813 789 197.3

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