ASTROSAT CZTI

Data Quality Report

Orbit 41773

Creation date: 2024-06-27T22:32:41.305352
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/AS1A12_044T19_9000005698_41773cztM0_level2.fits modeM0/AS1A12_044T19_9000005698_41773cztM0_level2_quad_clean.evt
Size (bytes)906,091,200244,532,160
Size864.1 MB 233.2 MB
Events in quadrant A8,150,1921,647,058
Events in quadrant B7,313,1941,685,162
Events in quadrant C8,670,7241,541,344
Events in quadrant D8,205,8871,461,617

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330485
B0320404
C0351104
D0356474

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15484370.238956%
B15484570.368122%
C154844963.203307%
D154842511.621028%

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 19783 15487 7 7 0.04% 0.05%
B 19783 15487 37 37 0.19% 0.24%
C 19783 15487 484 484 2.45% 3.13%
D 19783 15487 233 233 1.18% 1.50%

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 10 83 1373259 3890.09 1727 1688 352.6
A 2 79 41722 113.55 1727 1688 352.6
A 15 223 37513 101.61 1727 1688 352.6
B 5 255 201208 605.82 1702 1651 329.4
B 0 190 104094 311.0 1702 1651 329.4
B 0 245 88973 265.09 1702 1651 329.4
C 0 10 1525142 4033.04 1631 1640 377.8
C 15 214 616839 1628.57 1631 1640 377.8
C 14 254 63295 163.21 1631 1640 377.8
D 13 249 608508 1488.0 1663 1615 407.9
D 2 120 561878 1373.67 1663 1615 407.9
D 2 249 392957 959.5 1663 1615 407.9

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