ASTROSAT CZTI

Data Quality Report

Orbit 12185

Creation date: 2024-06-27T16:23:32.023643
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/AS1A04_160T01_9000001798_12185cztM0_level2.evt modeM0/AS1A04_160T01_9000001798_12185cztM0_level2_quad_clean.evt
Size (bytes)504,961,920127,379,520
Size481.6 MB 121.5 MB
Events in quadrant A3,398,662871,252
Events in quadrant B4,911,290845,983
Events in quadrant C3,416,502869,616
Events in quadrant D3,144,998837,727

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141192
B0186981
C0143241
D0134951

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62081201.932990%
B620862110.003222%
C62081422.287371%
D6208751.208119%

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 7424 6210 26 26 0.35% 0.42%
B 7424 6210 344 344 4.63% 5.54%
C 7424 6210 64 64 0.86% 1.03%
D 7424 6210 22 22 0.30% 0.35%

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 9 143 137646 881.61 784 772 155.3
A 1 162 74548 475.2 784 772 155.3
A 8 15 49578 314.36 784 772 155.3
B 4 239 1444416 10430.39 750 734 138.4
B 10 16 153034 1100.34 750 734 138.4
B 15 204 139763 1004.46 750 734 138.4
C 15 208 441243 2558.02 760 762 172.2
C 13 61 5476 27.38 760 762 172.2
C 4 175 4486 21.63 760 762 172.2
D 1 52 68783 384.54 760 740 176.9
D 14 34 56790 316.76 760 740 176.9
D 9 85 25865 141.99 760 740 176.9

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