ASTROSAT CZTI

Data Quality Report

Orbit 00965

Creation date: 2024-06-27T14:05:25.363899
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/AS1P01_998T01_9000000188_00965cztM0_level2.evt modeM0/AS1P01_998T01_9000000188_00965cztM0_level2_quad_clean.evt
Size (bytes)4,323,565,440312,543,360
Size4.0 GB 298.1 MB
Events in quadrant A26,452,2862,164,693
Events in quadrant B27,865,4192,162,709
Events in quadrant C28,651,8982,095,620
Events in quadrant D46,516,4561,515,767

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0943350
B0984450
C01007110
D01551660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04480
B04480
C04480
D04480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A22147690.311555%
B221471030.465074%
C22147260.117397%
D22148871539.348925%

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 25142 22151 549 549 2.18% 2.48%
B 25142 22151 766 766 3.05% 3.46%
C 25143 22152 750 750 2.98% 3.39%
D 25143 22151 11005 11005 43.77% 49.68%

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 14 170 99813 56.36 6841 6898 1648.6
A 15 233 58838 31.5 6841 6898 1648.6
A 12 189 36826 18.15 6841 6898 1648.6
B 5 249 202986 117.38 7075 7100 1668.8
B 8 234 194158 112.09 7075 7100 1668.8
B 15 22 166117 95.29 7075 7100 1668.8
C 10 34 2357223 1320.95 6392 6604 1779.5
C 15 241 1010683 564.25 6392 6604 1779.5
C 3 111 88685 46.13 6392 6604 1779.5
D 12 188 26971576 18601.37 4928 5061 1449.7
D 11 131 479035 326.94 4928 5061 1449.7
D 1 4 387898 264.08 4928 5061 1449.7

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