ASTROSAT CZTI

Data Quality Report

Orbit 19249

Creation date: 2024-06-27T18:00:37.019975
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/AS1C04_001T01_9000002846_19249cztM0_level2.evt modeM0/AS1C04_001T01_9000002846_19249cztM0_level2_quad_clean.evt
Size (bytes)165,326,40028,725,120
Size157.7 MB 27.4 MB
Events in quadrant A1,162,493184,076
Events in quadrant B1,202,757184,825
Events in quadrant C1,284,833172,643
Events in quadrant D1,208,089171,789

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A048371
B049311
C052261
D048781

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2158110.509731%
B2158190.880445%
C2158421.946247%
D2158100.463392%

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 2158 2158 0 0 0.00% 0.00%
B 2158 2158 2 2 0.09% 0.09%
C 2158 2158 1 1 0.05% 0.05%
D 2158 2158 4 4 0.19% 0.19%

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 9 143 2812 41.07 301 295 61.3
A 13 254 2797 40.82 301 295 61.3
A 0 226 2679 38.9 301 295 61.3
B 0 190 20777 364.31 295 288 56.2
B 7 220 14092 245.45 295 288 56.2
B 6 36 8863 152.47 295 288 56.2
C 3 233 101486 1513.98 286 288 66.8
C 14 238 46034 684.39 286 288 66.8
C 0 207 20502 302.41 286 288 66.8
D 1 52 78635 1093.46 294 285 71.7
D 2 120 8980 121.35 294 285 71.7
D 2 234 8775 118.49 294 285 71.7

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