ASTROSAT CZTI

Data Quality Report

Orbit 46744

Creation date: 2024-06-27T23:27:06.959850
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/AS1A13_092T17_9000006262_46744cztM0_level2.fits modeM0/AS1A13_092T17_9000006262_46744cztM0_level2_quad_clean.evt
Size (bytes)205,243,20035,887,680
Size195.7 MB 34.2 MB
Events in quadrant A2,390,021235,223
Events in quadrant B1,864,618245,234
Events in quadrant C1,458,654234,810
Events in quadrant D1,709,836210,966

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A088051
B071021
C057641
D065491

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A22222079.315932%
B22211426.393516%
C2221994.457452%
D22212109.455200%

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 2902 2222 8 8 0.28% 0.36%
B 2901 2221 37 37 1.28% 1.67%
C 2901 2222 45 45 1.55% 2.03%
D 2901 2221 119 119 4.10% 5.36%

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 10 83 1199734 20114.09 274 267 59.6
A 9 191 47344 789.44 274 267 59.6
A 3 7 28430 472.27 274 267 59.6
B 3 112 583782 10337.66 270 261 56.4
B 4 171 103287 1825.21 270 261 56.4
B 0 198 53672 946.23 270 261 56.4
C 14 254 316332 4812.92 270 270 65.7
C 3 233 79261 1202.86 270 270 65.7
C 0 207 4712 67.64 270 270 65.7
D 13 249 490890 6979.39 269 259 70.3
D 1 52 114854 1630.15 269 259 70.3
D 13 138 35747 504.83 269 259 70.3

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