ASTROSAT CZTI

Data Quality Report

Orbit 20732

Creation date: 2024-06-27T18:18:56.375550
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/AS1A06_002T02_9000003064_20732cztM0_level2.evt modeM0/AS1A06_002T02_9000003064_20732cztM0_level2_quad_clean.evt
Size (bytes)499,613,760104,287,680
Size476.5 MB 99.5 MB
Events in quadrant A3,434,741684,602
Events in quadrant B3,558,586690,870
Events in quadrant C3,576,355639,272
Events in quadrant D4,064,052634,330

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015288207
B015502193
C015394213
D017345197

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01522

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7304500.684556%
B7310680.930233%
C73021081.479047%
D7312911.244530%

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 7647 7334 0 0 0.00% 0.00%
B 7650 7328 1 1 0.01% 0.01%
C 7641 7326 0 0 0.00% 0.00%
D 7659 7330 45 45 0.59% 0.61%

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 0 226 7777 38.24 892 873 180.6
A 3 137 7442 36.38 892 873 180.6
A 12 194 6314 30.13 892 873 180.6
B 3 64 38012 216.74 890 866 171.4
B 12 111 20926 117.05 890 866 171.4
B 0 197 18482 102.79 890 866 171.4
C 14 238 131518 646.43 851 855 202.1
C 7 247 108306 531.59 851 855 202.1
C 3 233 21301 101.15 851 855 202.1
D 1 20 451363 2126.98 865 837 211.8
D 7 38 145662 683.73 865 837 211.8
D 1 52 58033 270.03 865 837 211.8

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