ASTROSAT CZTI

Data Quality Report

Orbit 28968

Creation date: 2024-06-27T19:58:38.778441
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/AS1A10_048T03_9000004154_28968cztM0_level2.evt modeM0/AS1A10_048T03_9000004154_28968cztM0_level2_quad_clean.evt
Size (bytes)578,076,48095,973,120
Size551.3 MB 91.5 MB
Events in quadrant A3,330,299612,262
Events in quadrant B3,614,826628,118
Events in quadrant C3,533,882601,490
Events in quadrant D6,550,170573,266

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144531
B0151711
C0148621
D0243371

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70461261.788249%
B70471712.426564%
C70471862.639421%
D70475507.804740%

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 7351 7048 0 0 0.00% 0.00%
B 7352 7049 21 21 0.29% 0.30%
C 7352 7049 0 0 0.00% 0.00%
D 7352 7049 350 350 4.76% 4.97%

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 13 254 12215 64.98 861 839 175.1
A 3 137 8664 44.7 861 839 175.1
A 0 226 7167 36.15 861 839 175.1
B 10 246 207397 1240.67 855 832 166.5
B 10 245 42166 248.26 855 832 166.5
B 12 111 20853 120.25 855 832 166.5
C 14 238 133722 676.75 832 837 196.4
C 3 233 120532 609.58 832 837 196.4
C 2 114 16148 77.98 832 837 196.4
D 1 52 1916619 9817.11 816 795 195.2
D 8 195 1366500 6998.18 816 795 195.2
D 13 104 107967 549.17 816 795 195.2

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