ASTROSAT CZTI

Data Quality Report

Orbit 31781

Creation date: 2024-06-27T20:32:37.776758
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_109T01_9000004638_31781cztM0_level2.evt modeM0/AS1A10_109T01_9000004638_31781cztM0_level2_quad_clean.evt
Size (bytes)1,516,242,240233,403,840
Size1.4 GB 222.6 MB
Events in quadrant A9,908,8471,482,799
Events in quadrant B14,393,7621,481,641
Events in quadrant C9,197,6631,443,529
Events in quadrant D11,186,8371,400,565

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0406375
B0567423
C0384423
D0453963

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182884082.230971%
B182894372.389414%
C182892831.547378%
D182892261.235715%

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 20003 18291 147 147 0.73% 0.80%
B 20004 18291 113 113 0.56% 0.62%
C 20004 18292 8 8 0.04% 0.04%
D 20004 18292 73 73 0.36% 0.40%

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 1211400 2683.71 2249 2209 450.6
A 13 254 33817 70.15 2249 2209 450.6
A 3 137 23246 46.69 2249 2209 450.6
B 6 159 4794854 11206.92 2222 2161 427.7
B 0 229 583700 1359.83 2222 2161 427.7
B 4 80 132978 305.89 2222 2161 427.7
C 14 238 351837 687.04 2176 2200 508.9
C 0 10 211043 410.38 2176 2200 508.9
C 3 233 67139 127.61 2176 2200 508.9
D 8 195 2161987 4192.67 2183 2134 515.2
D 12 218 328005 632.57 2183 2134 515.2
D 2 250 211959 407.31 2183 2134 515.2

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