ASTROSAT CZTI

Data Quality Report

Orbit 26492

Creation date: 2024-06-27T19:29:45.485384
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_120T02_9000003834_26492cztM0_level2.evt modeM0/AS1A09_120T02_9000003834_26492cztM0_level2_quad_clean.evt
Size (bytes)102,689,28020,304,000
Size97.9 MB 19.4 MB
Events in quadrant A508,127140,425
Events in quadrant B523,119142,645
Events in quadrant C549,136135,787
Events in quadrant D1,457,211116,947

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020580
B020790
C021810
D050490

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A101510.098522%
B101530.295567%
C101590.886700%
D101428027.613412%

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 1015 1015 0 0 0.00% 0.00%
B 1015 1015 0 0 0.00% 0.00%
C 1015 1015 0 0 0.00% 0.00%
D 1014 1014 230 230 22.68% 22.68%

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 1639 52.16 131 129 28.9
A 3 137 1193 36.76 131 129 28.9
A 0 226 1106 33.75 131 129 28.9
B 12 111 3065 104.86 132 129 28.0
B 11 111 2706 92.04 132 129 28.0
B 14 111 2464 83.39 132 129 28.0
C 3 233 28572 870.98 128 128 32.7
C 14 238 20751 631.5 128 128 32.7
C 13 61 873 22.81 128 128 32.7
D 1 52 577682 18839.97 118 115 30.7
D 12 233 260312 8487.51 118 115 30.7
D 7 80 161062 5250.02 118 115 30.7

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