ASTROSAT CZTI

Data Quality Report

Orbit 26431

Creation date: 2024-06-27T19:28:56.770182
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_108T02_9000003822_26431cztM0_level2.evt modeM0/AS1A09_108T02_9000003822_26431cztM0_level2_quad_clean.evt
Size (bytes)515,715,840117,023,040
Size491.8 MB 111.6 MB
Events in quadrant A3,265,241783,380
Events in quadrant B3,391,271816,507
Events in quadrant C3,873,961785,616
Events in quadrant D4,679,124737,491

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135770
B0139600
C0155550
D0180560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6028400.663570%
B6028490.812873%
C60281692.803583%
D60284347.199735%

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 7453 6029 0 0 0.00% 0.00%
B 7453 6029 0 0 0.00% 0.00%
C 7453 6029 21 21 0.28% 0.35%
D 7453 6029 328 328 4.40% 5.44%

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 6 16 16646 96.24 841 827 164.4
A 13 254 10440 58.48 841 827 164.4
A 0 226 7219 38.89 841 827 164.4
B 0 244 54173 340.35 850 833 156.7
B 12 111 17606 107.02 850 833 156.7
B 11 111 15663 94.63 850 833 156.7
C 3 233 160006 829.42 833 842 191.9
C 4 254 158225 820.14 833 842 191.9
C 14 238 132503 686.1 833 842 191.9
D 12 16 642059 3330.71 814 798 192.5
D 1 52 600920 3117.03 814 798 192.5
D 11 176 156699 809.75 814 798 192.5

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