ASTROSAT CZTI

Data Quality Report

Orbit 31669

Creation date: 2024-06-27T20:31:19.108653
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/AS1A10_056T01_9000004626_31669cztM0_level2.evt modeM0/AS1A10_056T01_9000004626_31669cztM0_level2_quad_clean.evt
Size (bytes)1,238,826,240188,190,720
Size1.2 GB 179.5 MB
Events in quadrant A7,326,5851,192,472
Events in quadrant B11,689,7151,193,612
Events in quadrant C8,784,6101,147,677
Events in quadrant D8,711,2901,136,178

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0318256
B0458713
C0359934
D0362533

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03040
B03040
C03040
D03040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A149201310.878016%
B149223072.057365%
C149214432.968970%
D149221150.770674%

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 38050 14924 0 0 0.00% 0.00%
B 38050 14926 19 19 0.05% 0.13%
C 38049 14925 71 71 0.19% 0.48%
D 38050 14926 18 18 0.05% 0.12%

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 15 174 68548 179.47 1869 1832 371.7
A 12 96 36738 93.9 1869 1832 371.7
A 13 254 26105 65.3 1869 1832 371.7
B 6 159 4044234 11668.8 1846 1802 346.4
B 4 80 116848 332.09 1846 1802 346.4
B 10 245 49983 139.08 1846 1802 346.4
C 3 233 719219 1739.86 1783 1797 412.3
C 10 22 394409 952.14 1783 1797 412.3
C 0 10 348571 840.98 1783 1797 412.3
D 8 195 1688546 3942.38 1815 1762 427.9
D 2 250 83155 190.23 1815 1762 427.9
D 2 234 71129 162.13 1815 1762 427.9

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