ASTROSAT CZTI

Data Quality Report

Orbit 26923

Creation date: 2024-06-27T19:34:32.801553
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/AS1A09_134T01_9000003896_26923cztM0_level2.evt modeM0/AS1A09_134T01_9000003896_26923cztM0_level2_quad_clean.evt
Size (bytes)1,198,408,32053,524,800
Size1.1 GB 51.0 MB
Events in quadrant A14,781,72650,106
Events in quadrant B12,083,487286,427
Events in quadrant C3,594,695433,297
Events in quadrant D5,407,482404,187

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0482190
B0402680
C0144110
D0203340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6365616096.779262%
B6364387660.905091%
C6364781.225644%
D63644076.395349%

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 7774 6364 5346 5346 68.77% 84.00%
B 7774 6364 3244 3244 41.73% 50.97%
C 7774 6365 5 5 0.06% 0.08%
D 7774 6365 349 349 4.49% 5.48%

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 14 235 13774680 327318.86 207 204 42.1
A 0 13 153392 3640.16 207 204 42.1
A 8 192 30310 715.4 207 204 42.1
B 0 189 8548801 64795.54 735 722 131.9
B 3 64 522925 3958.37 735 722 131.9
B 15 33 46478 346.84 735 722 131.9
C 14 238 143464 716.1 869 878 199.1
C 15 208 48909 241.22 869 878 199.1
C 0 207 9224 41.91 869 878 199.1
D 7 80 1725820 8702.78 843 825 198.2
D 2 250 231814 1165.36 843 825 198.2
D 12 233 171059 858.85 843 825 198.2

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