ASTROSAT CZTI

Data Quality Report

Orbit 09808

Creation date: 2024-06-27T15:50:53.718332
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/AS1G05_218T01_9000001394_09808cztM0_level2.evt modeM0/AS1G05_218T01_9000001394_09808cztM0_level2_quad_clean.evt
Size (bytes)648,567,360112,288,320
Size618.5 MB 107.1 MB
Events in quadrant A4,319,538698,761
Events in quadrant B4,526,201709,127
Events in quadrant C4,240,458691,384
Events in quadrant D5,931,553662,911

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01902
B01900
C01900
D01902

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019037187
B019635163
C019029182
D024197319

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181
B0180
C0181
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9201300.326052%
B9211790.857670%
C9202380.412954%
D91824725.140492%

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 25726 9282 0 0 0.00% 0.00%
B 25726 9284 24 24 0.09% 0.26%
C 25726 9283 6 6 0.02% 0.06%
D 25726 9280 345 345 1.34% 3.72%

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 1 162 43925 193.98 1098 1076 220.9
A 1 178 14386 60.26 1098 1076 220.9
A 15 174 12105 49.93 1098 1076 220.9
B 4 142 60810 282.99 1105 1078 211.1
B 0 214 51535 239.04 1105 1078 211.1
B 4 48 35911 165.02 1105 1078 211.1
C 14 234 38243 149.54 1070 1077 248.5
C 10 22 12940 47.73 1070 1077 248.5
C 14 67 10061 36.15 1070 1077 248.5
D 1 52 1351531 5086.77 1044 1018 265.5
D 2 152 316510 1188.32 1044 1018 265.5
D 2 16 93962 350.08 1044 1018 265.5

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