ASTROSAT CZTI

Data Quality Report

Orbit 31701

Creation date: 2024-06-27T20:31:42.131385
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/AS1T04_034T01_9000004632_31701cztM0_level2.evt modeM0/AS1T04_034T01_9000004632_31701cztM0_level2_quad_clean.evt
Size (bytes)606,467,52099,141,120
Size578.4 MB 94.5 MB
Events in quadrant A3,590,146646,347
Events in quadrant B5,617,292653,676
Events in quadrant C4,131,250649,367
Events in quadrant D4,612,040623,181

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148062
B0208763
C0164472
D0178022

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6162981.590393%
B61623485.647517%
C61623826.199286%
D61622724.414151%

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 7507 6163 11 11 0.15% 0.18%
B 7507 6163 82 82 1.09% 1.33%
C 7507 6163 117 117 1.56% 1.90%
D 7507 6163 152 152 2.02% 2.47%

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 13 171389 979.33 882 869 174.1
A 14 238 13872 74.68 882 869 174.1
A 13 254 11814 62.86 882 869 174.1
B 6 159 1762695 10735.59 873 855 164.1
B 4 80 181019 1097.81 873 855 164.1
B 5 172 127356 770.82 873 855 164.1
C 0 10 455378 2321.09 848 859 195.8
C 14 238 139219 706.56 848 859 195.8
C 3 233 114357 579.6 848 859 195.8
D 8 195 704600 3498.46 858 841 201.2
D 13 249 402878 1998.57 858 841 201.2
D 12 233 111354 549.37 858 841 201.2

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