ASTROSAT CZTI

Data Quality Report

Orbit 32235

Creation date: 2024-06-27T20:37:54.983941
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/AS1T04_054T01_9000004694_32235cztM0_level2.evt modeM0/AS1T04_054T01_9000004694_32235cztM0_level2_quad_clean.evt
Size (bytes)598,222,080101,018,880
Size570.5 MB 96.3 MB
Events in quadrant A3,169,142686,137
Events in quadrant B5,771,206669,913
Events in quadrant C4,055,878649,100
Events in quadrant D4,705,892625,189

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132472
B0212632
C0160542
D0182023

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6145160.260374%
B61453946.411717%
C61453696.004882%
D61441161.888021%

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 7475 6146 0 0 0.00% 0.00%
B 7475 6146 214 214 2.86% 3.48%
C 7475 6146 99 99 1.32% 1.61%
D 7474 6145 69 69 0.92% 1.12%

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 13 6 16228 95.1 816 804 162.2
A 13 254 12962 74.96 816 804 162.2
A 3 137 7427 40.84 816 804 162.2
B 6 159 1773181 11900.61 799 779 148.9
B 4 80 671348 4502.47 799 779 148.9
B 5 172 85837 571.11 799 779 148.9
C 0 10 640603 3530.26 781 789 181.2
C 14 238 158009 867.48 781 789 181.2
C 3 233 97061 531.19 781 789 181.2
D 8 195 1345528 7228.86 786 766 186.0
D 12 218 148688 795.16 786 766 186.0
D 14 52 60985 323.71 786 766 186.0

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