ASTROSAT CZTI

Data Quality Report

Orbit 21493

Creation date: 2024-06-27T18:28:34.156548
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/AS1T03_141T01_9000003174_21493cztM0_level2.evt modeM0/AS1T03_141T01_9000003174_21493cztM0_level2_quad_clean.evt
Size (bytes)474,886,08068,086,080
Size452.9 MB 64.9 MB
Events in quadrant A3,346,637406,614
Events in quadrant B3,564,746416,324
Events in quadrant C3,440,107405,377
Events in quadrant D3,601,376391,922

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137760
B0144230
C0141180
D0145700

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6318460.728079%
B6318881.392846%
C63181131.788541%
D63181021.614435%

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 7593 6318 0 0 0.00% 0.00%
B 7593 6318 18 18 0.24% 0.28%
C 7593 6318 0 0 0.00% 0.00%
D 7593 6318 60 60 0.79% 0.95%

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 13 254 8587 45.13 869 857 171.3
A 0 226 7439 38.43 869 857 171.3
A 3 137 6406 32.4 869 857 171.3
B 3 64 127354 797.09 869 849 158.7
B 12 111 18317 110.06 869 849 158.7
B 0 230 17372 104.11 869 849 158.7
C 14 238 136965 705.14 846 854 193.0
C 13 61 6086 27.11 846 854 193.0
C 4 175 4020 16.4 846 854 193.0
D 7 38 180001 882.37 851 827 203.1
D 1 20 105968 517.78 851 827 203.1
D 12 235 36643 176.38 851 827 203.1

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