ASTROSAT CZTI

Data Quality Report

Orbit 30880

Creation date: 2024-06-27T20:20:42.663863
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_071T49_9000004462_30880cztM0_level2.evt modeM0/AS1A10_071T49_9000004462_30880cztM0_level2_quad_clean.evt
Size (bytes)869,952,96085,095,360
Size829.7 MB 81.2 MB
Events in quadrant A4,514,813565,150
Events in quadrant B12,696,148389,087
Events in quadrant C3,894,572548,031
Events in quadrant D4,722,398540,213

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182760
B0429930
C0162510
D0186990

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76604756.201044%
B7660429256.031332%
C76613534.607754%
D76613144.098682%

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 7660 7660 138 138 1.80% 1.80%
B 7660 7660 3332 3332 43.50% 43.50%
C 7661 7661 7 7 0.09% 0.09%
D 7661 7661 38 38 0.50% 0.50%

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 0 13 799350 4102.55 958 938 194.6
A 12 96 16550 80.22 958 938 194.6
A 13 254 14167 67.98 958 938 194.6
B 6 36 7629640 50368.36 765 742 151.5
B 6 159 1722273 11366.08 765 742 151.5
B 5 172 154236 1013.42 765 742 151.5
C 14 238 148907 680.79 920 924 217.4
C 0 10 72539 329.46 920 924 217.4
C 3 233 56544 255.87 920 924 217.4
D 8 195 697379 3149.47 928 906 221.1
D 12 233 329084 1484.03 928 906 221.1
D 2 250 64335 286.83 928 906 221.1

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