ASTROSAT CZTI

Data Quality Report

Orbit 46246

Creation date: 2024-06-27T23:20:48.517822
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_094T02_9000006190_46246cztM0_level2.fits modeM0/AS1A13_094T02_9000006190_46246cztM0_level2_quad_clean.evt
Size (bytes)543,490,560115,865,280
Size518.3 MB 110.5 MB
Events in quadrant A6,980,915741,720
Events in quadrant B4,516,095782,091
Events in quadrant C3,563,914782,253
Events in quadrant D4,496,218698,305

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260151
B0183421
C0159441
D0185771

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72383614.987566%
B72371872.583944%
C7238771.063830%
D72382743.785576%

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 7588 7239 198 198 2.61% 2.74%
B 7587 7237 88 88 1.16% 1.22%
C 7588 7239 46 46 0.61% 0.64%
D 7588 7239 210 210 2.77% 2.90%

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 3326048 20646.58 770 755 161.1
A 0 247 513338 3182.6 770 755 161.1
A 6 10 68330 419.57 770 755 161.1
B 3 112 1018172 6603.99 781 755 154.1
B 5 172 191026 1235.04 781 755 154.1
B 4 171 56935 364.66 781 755 154.1
C 12 2 201547 1091.57 783 785 183.9
C 3 9 179153 969.81 783 785 183.9
C 1 3 111948 604.41 783 785 183.9
D 12 128 404709 2103.35 770 747 192.1
D 2 249 290035 1506.27 770 747 192.1
D 1 52 267919 1391.11 770 747 192.1

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