ASTROSAT CZTI

Data Quality Report

Orbit 28481

Creation date: 2024-06-27T19:52:14.437110
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_110T04_9000004094_28481cztM0_level2.evt modeM0/AS1A10_110T04_9000004094_28481cztM0_level2_quad_clean.evt
Size (bytes)139,020,48018,239,040
Size132.6 MB 17.4 MB
Events in quadrant A728,180115,956
Events in quadrant B1,512,826113,890
Events in quadrant C943,449107,398
Events in quadrant D928,327110,518

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029080
B053750
C035870
D036940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1395110.788530%
B139436626.255380%
C13941339.540890%
D1394120.860832%

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 1395 1395 0 0 0.00% 0.00%
B 1394 1394 292 292 20.95% 20.95%
C 1394 1394 90 90 6.46% 6.46%
D 1394 1394 3 3 0.22% 0.22%

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 8 192 1900 44.01 188 184 39.0
A 13 254 1893 43.83 188 184 39.0
A 3 137 1856 42.88 188 184 39.0
B 10 245 867974 26137.79 161 158 33.2
B 14 207 6686 196.62 161 158 33.2
B 12 111 3862 111.56 161 158 33.2
C 7 238 237814 5760.2 170 171 41.3
C 14 238 28001 674.57 170 171 41.3
C 7 222 4688 109.49 170 171 41.3
D 1 52 170140 3825.1 180 174 44.4
D 8 195 30621 685.21 180 174 44.4
D 13 104 27184 607.86 180 174 44.4

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