ASTROSAT CZTI

Data Quality Report

Orbit 18989

Creation date: 2024-06-27T17:57:39.364525
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/AS1A05_132T01_9000002828_18989cztM0_level2.evt modeM0/AS1A05_132T01_9000002828_18989cztM0_level2_quad_clean.evt
Size (bytes)625,345,920112,587,840
Size596.4 MB 107.4 MB
Events in quadrant A3,409,885743,927
Events in quadrant B3,766,846772,600
Events in quadrant C3,531,424746,844
Events in quadrant D7,786,136687,920

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141782
B0154332
C0144532
D0278013

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6581620.942106%
B65811011.534721%
C6581701.063668%
D65806499.863222%

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 7861 6582 22 22 0.28% 0.33%
B 7861 6582 32 32 0.41% 0.49%
C 7861 6582 0 0 0.00% 0.00%
D 7860 6581 426 426 5.42% 6.47%

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 9 143 108444 626.71 857 842 171.7
A 0 226 7389 38.13 857 842 171.7
A 13 254 6559 33.3 857 842 171.7
B 3 112 239282 1486.91 866 845 160.4
B 7 220 104305 645.19 866 845 160.4
B 4 80 18820 112.09 866 845 160.4
C 14 238 132397 666.83 848 859 197.3
C 3 233 88356 443.56 848 859 197.3
C 13 61 5922 25.67 848 859 197.3
D 1 52 2499439 12687.94 817 796 196.9
D 7 238 2161417 10971.49 817 796 196.9
D 2 234 25478 125.33 817 796 196.9

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