ASTROSAT CZTI

Data Quality Report

Orbit 36238

Creation date: 2022-06-13T12:38:49.875921
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_071T34_9000005178_36238cztM0_level2.evt modeM0/AS1A10_071T34_9000005178_36238cztM0_level2_quad_clean.evt
Size (bytes)558,034,56095,639,040
Size532.2 MB 91.2 MB
Events in quadrant A3,405,024612,805
Events in quadrant B3,763,888620,391
Events in quadrant C3,603,394609,970
Events in quadrant D5,654,621566,620

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143723
B0154652
C0146352
D0214332

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A698380.114564%
B6983741.059716%
C6983240.343692%
D69834025.756838%

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 9579 6985 4 4 0.04% 0.06%
B 9579 6985 46 46 0.48% 0.66%
C 9579 6985 13 13 0.14% 0.19%
D 9579 6985 356 356 3.72% 5.10%

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 10 83 202277 1209.4 819 801 166.6
A 9 143 19748 113.73 819 801 166.6
A 13 254 12763 71.8 819 801 166.6
B 5 172 199847 1260.82 814 792 157.9
B 5 236 186191 1174.33 814 792 157.9
B 0 190 48232 300.49 814 792 157.9
C 15 214 289369 1534.37 799 804 188.1
C 0 10 158591 838.99 799 804 188.1
C 12 250 27869 143.91 799 804 188.1
D 12 6 964670 5025.24 781 760 191.8
D 12 227 470888 2450.96 781 760 191.8
D 12 235 342037 1779.21 781 760 191.8

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