ASTROSAT CZTI

Data Quality Report

Orbit 21533

Creation date: 2024-06-27T18:29:04.021635
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/AS1A05_144T02_9000003176_21533cztM0_level2.evt modeM0/AS1A05_144T02_9000003176_21533cztM0_level2_quad_clean.evt
Size (bytes)496,975,680105,589,440
Size474.0 MB 100.7 MB
Events in quadrant A3,110,580685,044
Events in quadrant B3,289,828699,952
Events in quadrant C3,215,402691,009
Events in quadrant D4,980,293654,654

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137703
B0142492
C0140162
D0195482

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6707270.402564%
B6708430.641026%
C6708821.222421%
D67082794.159213%

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 8607 6709 0 0 0.00% 0.00%
B 8608 6710 8 8 0.09% 0.12%
C 8608 6710 2 2 0.02% 0.03%
D 8608 6710 172 172 2.00% 2.56%

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 10244 58.43 806 788 161.8
A 3 137 6935 37.98 806 788 161.8
A 0 226 6829 37.33 806 788 161.8
B 0 230 58288 373.92 807 786 153.8
B 0 229 37135 236.37 807 786 153.8
B 0 190 22832 143.36 807 786 153.8
C 14 238 124381 676.2 783 787 182.8
C 3 233 29314 156.08 783 787 182.8
C 4 175 7968 39.29 783 787 182.8
D 1 52 1316287 7009.37 780 758 187.7
D 7 223 276726 1470.41 780 758 187.7
D 14 35 229878 1220.79 780 758 187.7

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