ASTROSAT CZTI

Data Quality Report

Orbit 27431

Creation date: 2024-06-27T19:40:00.611249
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/AS1T03_249T01_9000003934_27431cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27431cztM0_level2_quad_clean.evt
Size (bytes)563,555,52094,501,440
Size537.4 MB 90.1 MB
Events in quadrant A3,250,735626,053
Events in quadrant B3,313,780629,249
Events in quadrant C3,273,795598,866
Events in quadrant D6,799,861565,948

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131340
B0133390
C0132180
D0243830

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6329771.216622%
B6330731.153239%
C6330741.169036%
D6330121119.131122%

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 7529 6329 0 0 0.00% 0.00%
B 7530 6331 4 4 0.05% 0.06%
C 7530 6331 0 0 0.00% 0.00%
D 7530 6331 1131 1131 15.02% 17.86%

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 9793 53.28 842 826 168.3
A 3 137 7503 39.67 842 826 168.3
A 0 226 7343 38.72 842 826 168.3
B 0 189 28587 178.13 824 805 156.0
B 0 190 20808 128.25 824 805 156.0
B 0 230 20041 123.34 824 805 156.0
C 14 238 129466 692.18 799 804 185.9
C 2 16 14676 74.63 799 804 185.9
C 7 221 10914 54.39 799 804 185.9
D 1 52 3886434 22126.69 742 723 175.6
D 2 250 78352 442.05 742 723 175.6
D 2 234 23486 129.62 742 723 175.6

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